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JavaTM 2 Platform Standard Ed. 5.0 |
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java.lang.Object java.awt.datatransfer.DataFlavor
public class DataFlavor
Each instance represents the opaque concept of a data format as would appear on a clipboard, during drag and drop, or in a file system.
DataFlavor
objects are constant and never change once
instantiated.
For information on using data transfer with Swing, see How to Use Drag and Drop and Data Transfer, a section in The Java Tutorial, for more information.
| Field Summary | |
|---|---|
static DataFlavor |
imageFlavor
The DataFlavor representing a Java Image class,
where: |
static DataFlavor |
javaFileListFlavor
To transfer a list of files to/from Java (and the underlying platform) a DataFlavor of this type/subtype and
representation class of java.util.List is used. |
static String |
javaJVMLocalObjectMimeType
To transfer a reference to an arbitrary Java object reference that has no associated MIME Content-type, across a Transferable
interface WITHIN THE SAME JVM, a DataFlavor
with this type/subtype is used, with a representationClass
equal to the type of the class/interface being passed across the
Transferable . |
static String |
javaRemoteObjectMimeType
In order to pass a live link to a Remote object via a Drag and Drop ACTION_LINK operation a Mime Content Type of
application/x-java-remote-object should be used,
where the representation class of the DataFlavor
represents the type of the Remote interface to be
transferred. |
static String |
javaSerializedObjectMimeType
A MIME Content-Type of application/x-java-serialized-object represents a graph of Java object(s) that have been made persistent. |
static DataFlavor |
plainTextFlavor
Deprecated. as of 1.3. Use DataFlavor.getReaderForText(Transferable)
instead of Transferable.getTransferData(DataFlavor.plainTextFlavor) . |
static DataFlavor |
stringFlavor
The DataFlavor representing a Java Unicode String class,
where: |
| Constructor Summary | |
|---|---|
DataFlavor()
Constructs a new DataFlavor . |
|
DataFlavor(Class<?> representationClass,
String humanPresentableName)
Constructs a DataFlavor that represents a Java class. |
|
DataFlavor(String mimeType)
Constructs a DataFlavor from a mimeType string. |
|
DataFlavor(String mimeType,
String humanPresentableName)
Constructs a DataFlavor that represents a
MimeType . |
|
DataFlavor(String mimeType,
String humanPresentableName,
ClassLoader classLoader)
Constructs a DataFlavor that represents a
MimeType . |
| Method Summary | |
|---|---|
Object |
clone()
Returns a clone of this DataFlavor . |
boolean |
equals(DataFlavor that)
Tests a DataFlavor to this DataFlavor for
equality. |
boolean |
equals(Object o)
Tests an arbitrary Object to this DataFlavor
for equality. |
boolean |
equals(String s)
Deprecated. As inconsistent with hashCode() contract,
use isMimeTypeEqual(String) instead. |
Class<?> |
getDefaultRepresentationClass()
|
String |
getDefaultRepresentationClassAsString()
|
String |
getHumanPresentableName()
Returns the human presentable name for the data format that this DataFlavor represents. |
String |
getMimeType()
Returns the MIME type string for this DataFlavor . |
String |
getParameter(String paramName)
Returns the human presentable name for this DataFlavor
if paramName equals "humanPresentableName". |
String |
getPrimaryType()
Returns the primary MIME type for this DataFlavor . |
Reader |
getReaderForText(Transferable transferable)
Gets a Reader for a text flavor, decoded, if necessary, for the expected charset (encoding). |
Class<?> |
getRepresentationClass()
Returns the Class which objects supporting this
DataFlavor will return when this DataFlavor
is requested. |
String |
getSubType()
Returns the sub MIME type of this DataFlavor . |
static DataFlavor |
getTextPlainUnicodeFlavor()
Returns a DataFlavor representing plain text with Unicode
encoding, where: |
int |
hashCode()
Returns hash code for this DataFlavor . |
boolean |
isFlavorJavaFileListType()
Returns true if the DataFlavor specified represents
a list of file objects. |
boolean |
isFlavorRemoteObjectType()
Returns true if the DataFlavor specified represents
a remote object. |
boolean |
isFlavorSerializedObjectType()
Returns true if the DataFlavor specified represents
a serialized object. |
boolean |
isFlavorTextType()
Returns whether this DataFlavor is a valid text flavor for
this implementation of the Java platform. |
boolean |
isMimeTypeEqual(DataFlavor dataFlavor)
Compares the mimeType of two DataFlavor
objects. |
boolean |
isMimeTypeEqual(String mimeType)
Returns whether the string representation of the MIME type passed in is equivalent to the MIME type of this DataFlavor . |
boolean |
isMimeTypeSerializedObject()
Does the DataFlavor represent a serialized object? |
boolean |
isRepresentationClassByteBuffer()
Returns whether the representation class for this DataFlavor is java.nio.ByteBuffer or a
subclass thereof. |
boolean |
isRepresentationClassCharBuffer()
Returns whether the representation class for this DataFlavor is java.nio.CharBuffer or a
subclass thereof. |
boolean |
isRepresentationClassInputStream()
Does the DataFlavor represent a
java.io.InputStream ? |
boolean |
isRepresentationClassReader()
Returns whether the representation class for this DataFlavor is java.io.Reader or a subclass
thereof. |
boolean |
isRepresentationClassRemote()
Returns true if the representation class is Remote . |
boolean |
isRepresentationClassSerializable()
Returns true if the representation class can be serialized. |
boolean |
match(DataFlavor that)
Tests a DataFlavor to this DataFlavor for
equality. |
protected String |
normalizeMimeType(String mimeType)
Deprecated. |
protected String |
normalizeMimeTypeParameter(String parameterName,
String parameterValue)
Deprecated. |
void |
readExternal(ObjectInput is)
Restores this DataFlavor from a Serialized state. |
static DataFlavor |
selectBestTextFlavor(DataFlavor[] availableFlavors)
Selects the best text DataFlavor from an array of
DataFlavor s. |
void |
setHumanPresentableName(String humanPresentableName)
Sets the human presentable name for the data format that this DataFlavor represents. |
String |
toString()
String representation of this DataFlavor and its
parameters. |
protected static Class<?> |
tryToLoadClass(String className,
ClassLoader fallback)
Tries to load a class from: the bootstrap loader, the system loader, the context loader (if one is present) and finally the loader specified. |
void |
writeExternal(ObjectOutput os)
Serializes this DataFlavor . |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
public static final DataFlavor stringFlavor
DataFlavor
representing a Java Unicode String class,
where:
representationClass = java.lang.String mimeType = "application/x-java-serialized-object"
public static final DataFlavor imageFlavor
DataFlavor
representing a Java Image class,
where:
representationClass = java.awt.Image mimeType = "image/x-java-image"
@Deprecated public static final DataFlavor plainTextFlavor
DataFlavor.getReaderForText(Transferable)
instead of Transferable.getTransferData(DataFlavor.plainTextFlavor)
.DataFlavor
representing plain text with Unicode
encoding, where:
representationClass = InputStream mimeType = "text/plain; charset=unicode"This
DataFlavor
has been deprecated because
(1) Its representation is an InputStream, an 8-bit based representation,
while Unicode is a 16-bit character set; and (2) The charset "unicode"
is not well-defined. "unicode" implies a particular platform's
implementation of Unicode, not a cross-platform implementation.
public static final String javaSerializedObjectMimeType
DataFlavor
identifies the Java type of an object returned as a reference
from an invocation java.awt.datatransfer.getTransferData
.
public static final DataFlavor javaFileListFlavor
DataFlavor
of this type/subtype and
representation class of java.util.List
is used.
Each element of the list is required/guaranteed to be of type
java.io.File
.
public static final String javaJVMLocalObjectMimeType
Transferable
interface WITHIN THE SAME JVM, a DataFlavor
with this type/subtype is used, with a representationClass
equal to the type of the class/interface being passed across the
Transferable
.
The object reference returned from
Transferable.getTransferData
for a DataFlavor
with this MIME Content-Type is required to be
an instance of the representation Class of the DataFlavor
.
public static final String javaRemoteObjectMimeType
ACTION_LINK
operation a Mime Content Type of
application/x-java-remote-object should be used,
where the representation class of the DataFlavor
represents the type of the Remote
interface to be
transferred.
| Constructor Detail |
|---|
public DataFlavor()
DataFlavor
. This constructor is
provided only for the purpose of supporting the
Externalizable
interface. It is not
intended for public (client) use.
public DataFlavor(Class<?> representationClass, String humanPresentableName)
DataFlavor
that represents a Java class.
The returned DataFlavor
will have the following
characteristics:
representationClass = representationClass mimeType = application/x-java-serialized-object
representationClass
- the class used to transfer data in this flavorhumanPresentableName
- the human-readable string used to identify
this flavor; if this parameter is null
then the value of the the MIME Content Type is used
NullPointerException
- if representationClass
is nullpublic DataFlavor(String mimeType, String humanPresentableName)
DataFlavor
that represents a
MimeType
.
The returned DataFlavor
will have the following
characteristics:
If the mimeType
is
"application/x-java-serialized-object; class=<representation class>",
the result is the same as calling
new DataFlavor(Class:forName(<representation class>)
.
Otherwise:
representationClass = InputStream mimeType = mimeType
mimeType
- the string used to identify the MIME type for this flavor;
if the the mimeType
does not specify a
"class=" parameter, or if the class is not successfully
loaded, then an IllegalArgumentException
is thrownhumanPresentableName
- the human-readable string used to identify
this flavor; if this parameter is null
then the value of the the MIME Content Type is used
IllegalArgumentException
- if mimeType
is
invalid or if the class is not successfully loaded
NullPointerException
- if mimeType
is nullpublic DataFlavor(String mimeType, String humanPresentableName, ClassLoader classLoader) throws ClassNotFoundException
DataFlavor
that represents a
MimeType
.
The returned DataFlavor
will have the following
characteristics:
If the mimeType is
"application/x-java-serialized-object; class=<representation class>",
the result is the same as calling
new DataFlavor(Class:forName(<representation class>)
.
Otherwise:
representationClass = InputStream mimeType = mimeType
mimeType
- the string used to identify the MIME type for this flavorhumanPresentableName
- the human-readable string used to
identify this flavorclassLoader
- the class loader to use
ClassNotFoundException
- if the class is not loaded
IllegalArgumentException
- if mimeType
is
invalid
NullPointerException
- if mimeType
is nullpublic DataFlavor(String mimeType) throws ClassNotFoundException
DataFlavor
from a mimeType
string.
The string can specify a "class=DataFlavor
with the desired
representation class. If the string does not contain "class=" parameter,
java.io.InputStream
is used as default.
mimeType
- the string used to identify the MIME type for this flavor;
if the class specified by "class=" parameter is not
successfully loaded, then an
ClassNotFoundException
is thrown
ClassNotFoundException
- if the class is not loaded
IllegalArgumentException
- if mimeType
is
invalid
NullPointerException
- if mimeType
is null| Method Detail |
|---|
protected static final Class<?> tryToLoadClass(String className, ClassLoader fallback) throws ClassNotFoundException
className
- the name of the class to be loadedfallback
- the fallback loader
ClassNotFoundException
- if class is not foundpublic String toString()
DataFlavor
and its
parameters. The resulting String
contains the name of
the DataFlavor
class, this flavor's MIME type, and its
representation class. If this flavor has a primary MIME type of "text",
supports the charset parameter, and has an encoded representation, the
flavor's charset is also included. See selectBestTextFlavor
for a list of text flavors which support the charset parameter.
toString
in class Object
DataFlavor
selectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
public static final DataFlavor getTextPlainUnicodeFlavor()
DataFlavor
representing plain text with Unicode
encoding, where:
representationClass = java.io.InputStream mimeType = "text/plain; charset=<platform default Unicode encoding>"Sun's implementation for Microsoft Windows uses the encoding
utf-16le
.
Sun's implementation for Solaris and Linux uses the encoding
iso-10646-ucs-2
.
DataFlavor
representing plain text
with Unicode encodingpublic static final DataFlavor selectBestTextFlavor(DataFlavor[] availableFlavors)
DataFlavor
from an array of
DataFlavor
s. Only DataFlavor.stringFlavor
, and
equivalent flavors, and flavors that have a primary MIME type of "text",
are considered for selection.
Flavors are first sorted by their MIME types in the following order:
For example, "text/sgml" will be selected over
"text/html", and DataFlavor.stringFlavor
will be chosen
over DataFlavor.plainTextFlavor
.
If two or more flavors share the best MIME type in the array, then that MIME type will be checked to see if it supports the charset parameter.
The following MIME types support, or are treated as though they support, the charset parameter:
DataFlavor
which uses that MIME type. If so, the JRE
will assume from that point on that the MIME type supports the charset
parameter and will not check again. If the parameter is not explicitly
listed, the JRE will assume from that point on that the MIME type does
not support the charset parameter and will not check again. Because
this check is performed on an arbitrarily chosen
DataFlavor
, developers must ensure that all
DataFlavor
s with a "text/<other>" MIME type specify
the charset parameter if it is supported by that MIME type. Developers
should never rely on the JRE to substitute the platform's default
charset for a "text/<other>" DataFlavor. Failure to adhere to this
restriction will lead to undefined behavior.
If the best MIME type in the array does not support the charset
parameter, the flavors which share that MIME type will then be sorted by
their representation classes in the following order:
java.io.InputStream
, java.nio.ByteBuffer
,
[B
, <all others>.
If two or more flavors share the best representation class, or if no flavor has one of the three specified representations, then one of those flavors will be chosen non-deterministically.
If the best MIME type in the array does support the charset parameter,
the flavors which share that MIME type will then be sorted by their
representation classes in the following order:
java.io.Reader
, java.lang.String
,
java.nio.CharBuffer
, [C
, <all others>.
If two or more flavors share the best representation class, and that representation is one of the four explicitly listed, then one of those flavors will be chosen non-deterministically. If, however, no flavor has one of the four specified representations, the flavors will then be sorted by their charsets. Unicode charsets, such as "UTF-16", "UTF-8", "UTF-16BE", "UTF-16LE", and their aliases, are considered best. After them, the platform default charset and its aliases are selected. "US-ASCII" and its aliases are worst. All other charsets are chosen in alphabetical order, but only charsets supported by this implementation of the Java platform will be considered.
If two or more flavors share the best charset, the flavors will then
again be sorted by their representation classes in the following order:
java.io.InputStream
, java.nio.ByteBuffer
,
[B
, <all others>.
If two or more flavors share the best representation class, or if no flavor has one of the three specified representations, then one of those flavors will be chosen non-deterministically.
availableFlavors
- an array of available DataFlavor
s
null
,
if availableFlavors
is null
,
has zero length, or contains no text flavorspublic Reader getReaderForText(Transferable transferable) throws UnsupportedFlavorException, IOException
java.io.Reader
, java.lang.String
,
java.nio.CharBuffer
, [C
,
java.io.InputStream
, java.nio.ByteBuffer
,
and [B
.
Because text flavors which do not support the charset parameter are
encoded in a non-standard format, this method should not be called for
such flavors. However, in order to maintain backward-compatibility,
if this method is called for such a flavor, this method will treat the
flavor as though it supports the charset parameter and attempt to
decode it accordingly. See selectBestTextFlavor
for a list
of text flavors which do not support the charset parameter.
transferable
- the Transferable
whose data will be
requested in this flavor
Reader
to read the Transferable
's
data
IllegalArgumentException
- if the representation class
is not one of the seven listed above
IllegalArgumentException
- if the Transferable
has null
data
NullPointerException
- if the Transferable
is
null
UnsupportedEncodingException
- if this flavor's representation
is java.io.InputStream
,
java.nio.ByteBuffer
, or [B
and
this flavor's encoding is not supported by this
implementation of the Java platform
UnsupportedFlavorException
- if the Transferable
does not support this flavor
IOException
- if the data cannot be read because of an
I/O errorselectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
public String getMimeType()
DataFlavor
.
public Class<?> getRepresentationClass()
Class
which objects supporting this
DataFlavor
will return when this DataFlavor
is requested.
Class
which objects supporting this
DataFlavor
will return when this DataFlavor
is requestedpublic String getHumanPresentableName()
DataFlavor
represents. This name would be localized
for different countries.
DataFlavor
representspublic String getPrimaryType()
DataFlavor
.
DataFlavor
public String getSubType()
DataFlavor
.
DataFlavor
public String getParameter(String paramName)
DataFlavor
if paramName
equals "humanPresentableName". Otherwise
returns the MIME type value associated with paramName
.
paramName
- the parameter name requested
null
if there is no associated valuepublic void setHumanPresentableName(String humanPresentableName)
DataFlavor
represents. This name would be localized
for different countries.
humanPresentableName
- the new human presentable namepublic boolean equals(Object o)
Object
to this DataFlavor
for equality. Two DataFlavor
s are considered equal if and
only if their MIME primary type and subtype and representation class are
equal. Additionally, if the primary type is "text", the subtype denotes
a text flavor which supports the charset parameter, and the
representation class is not java.io.Reader
,
java.lang.String
, java.nio.CharBuffer
, or
[C
, the charset
parameter must also be equal.
If a charset is not explicitly specified for one or both
DataFlavor
s, the platform default encoding is assumed. See
selectBestTextFlavor
for a list of text flavors which
support the charset parameter.
equals
in class Object
o
- the Object
to compare with this
true
if that
is equivalent to this
DataFlavor
; false
otherwiseselectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
public boolean equals(DataFlavor that)
DataFlavor
to this DataFlavor
for
equality. Two DataFlavor
s are considered equal if and only
if their MIME primary type and subtype and representation class are
equal. Additionally, if the primary type is "text", the subtype denotes
a text flavor which supports the charset parameter, and the
representation class is not java.io.Reader
,
java.lang.String
, java.nio.CharBuffer
, or
[C
, the charset
parameter must also be equal.
If a charset is not explicitly specified for one or both
DataFlavor
s, the platform default encoding is assumed. See
selectBestTextFlavor
for a list of text flavors which
support the charset parameter.
that
- the DataFlavor
to compare with
this
true
if that
is equivalent to this
DataFlavor
; false
otherwiseselectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
@Deprecated public boolean equals(String s)
hashCode()
contract,
use isMimeTypeEqual(String)
instead.
mimeType
against the passed in
String
and representationClass
is
not considered in the comparison.
If representationClass
needs to be compared, then
equals(new DataFlavor(s))
may be used.
public int hashCode()
DataFlavor
.
For two equal DataFlavor
s, hash codes are equal.
For the String
that matches DataFlavor.equals(String)
, it is not
guaranteed that DataFlavor
's hash code is equal
to the hash code of the String
.
hashCode
in class Object
DataFlavor
Object.equals(java.lang.Object)
,
Hashtable
public boolean match(DataFlavor that)
DataFlavor
to this DataFlavor
for
equality. Two DataFlavor
s are considered equal if and only
if their MIME primary type and subtype and representation class are
equal. Additionally, if the primary type is "text", the subtype denotes
a text flavor which supports the charset parameter, and the
representation class is not java.io.Reader
,
java.lang.String
, java.nio.CharBuffer
, or
[C
, the charset
parameter must also be equal.
If a charset is not explicitly specified for one or both
DataFlavor
s, the platform default encoding is assumed. See
selectBestTextFlavor
for a list of text flavors which
support the charset parameter.
that
- the DataFlavor
to compare with
this
true
if that
is equivalent to this
DataFlavor
; false
otherwiseselectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
public boolean isMimeTypeEqual(String mimeType)
DataFlavor
.
Parameters are not included in the comparison.
mimeType
- the string representation of the MIME type
DataFlavor
;
false otherwise
NullPointerException
- if mimeType is null
public final boolean isMimeTypeEqual(DataFlavor dataFlavor)
mimeType
of two DataFlavor
objects. No parameters are considered.
dataFlavor
- the DataFlavor
to be compared
MimeType
s are equal,
otherwise falsepublic boolean isMimeTypeSerializedObject()
DataFlavor
represent a serialized object?
public final Class<?> getDefaultRepresentationClass()
public final String getDefaultRepresentationClassAsString()
public boolean isRepresentationClassInputStream()
DataFlavor
represent a
java.io.InputStream
?
public boolean isRepresentationClassReader()
DataFlavor
is java.io.Reader
or a subclass
thereof.
public boolean isRepresentationClassCharBuffer()
DataFlavor
is java.nio.CharBuffer
or a
subclass thereof.
public boolean isRepresentationClassByteBuffer()
DataFlavor
is java.nio.ByteBuffer
or a
subclass thereof.
public boolean isRepresentationClassSerializable()
public boolean isRepresentationClassRemote()
Remote
.
Remote
public boolean isFlavorSerializedObjectType()
DataFlavor
specified represents
a serialized object.
DataFlavor
specified represents
a Serialized Objectpublic boolean isFlavorRemoteObjectType()
DataFlavor
specified represents
a remote object.
DataFlavor
specified represents
a Remote Objectpublic boolean isFlavorJavaFileListType()
DataFlavor
specified represents
a list of file objects.
DataFlavor
specified represents
a List of File objectspublic boolean isFlavorTextType()
DataFlavor
is a valid text flavor for
this implementation of the Java platform. Only flavors equivalent to
DataFlavor.stringFlavor
and DataFlavor
s with
a primary MIME type of "text" can be valid text flavors.
If this flavor supports the charset parameter, it must be equivalent to
DataFlavor.stringFlavor
, or its representation must be
java.io.Reader
, java.lang.String
,
java.nio.CharBuffer
, [C
,
java.io.InputStream
, java.nio.ByteBuffer
, or
[B
. If the representation is
java.io.InputStream
, java.nio.ByteBuffer
, or
[B
, then this flavor's charset
parameter must
be supported by this implementation of the Java platform. If a charset
is not specified, then the platform default charset, which is always
supported, is assumed.
If this flavor does not support the charset parameter, its
representation must be java.io.InputStream
,
java.nio.ByteBuffer
, or [B
.
See selectBestTextFlavor
for a list of text flavors which
support the charset parameter.
true
if this DataFlavor
is a valid
text flavor as described above; false
otherwiseselectBestTextFlavor(java.awt.datatransfer.DataFlavor[])
public void writeExternal(ObjectOutput os) throws IOException
DataFlavor
.
writeExternal
in interface Externalizable
os
- the stream to write the object to
IOException
- Includes any I/O exceptions that may occurpublic void readExternal(ObjectInput is) throws IOException, ClassNotFoundException
DataFlavor
from a Serialized state.
readExternal
in interface Externalizable
is
- the stream to read data from in order to restore the object
IOException
- if I/O errors occur
ClassNotFoundException
- If the class for an object being
restored cannot be found.public Object clone() throws CloneNotSupportedException
DataFlavor
.
clone
in class Object
DataFlavor
CloneNotSupportedException
- if the object's class does not
support the Cloneable
interface. Subclasses
that override the clone
method can also
throw this exception to indicate that an instance cannot
be cloned.Cloneable
@Deprecated protected String normalizeMimeTypeParameter(String parameterName, String parameterValue)
DataFlavor
for every MIME Type parameter
to allow DataFlavor
subclasses to handle special
parameters like the text/plain charset
parameters, whose values are case insensitive. (MIME type parameter
values are supposed to be case sensitive.
This method is called for each parameter name/value pair and should
return the normalized representation of the parameterValue
.
This method is never invoked by this implementation from 1.1 onwards.
@Deprecated protected String normalizeMimeType(String mimeType)
DataFlavor
subtypes
the opportunity to change how the normalization of MIME types is
accomplished. One possible use would be to add default
parameter/value pairs in cases where none are present in the MIME
type string passed in.
This method is never invoked by this implementation from 1.1 onwards.
|
JavaTM 2 Platform Standard Ed. 5.0 |
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Copyright © 2004, 2010 Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.


Class: Aws::Shield::Types::AttackDetail
| Relationships & Source Files | |
| Super Chains via Extension / Inclusion / Inheritance | |
|
Class Chain:
self,
Struct
|
|
|
Instance Chain:
self,
::Aws::Structure ,
Struct
|
|
| Inherits: |
Struct
|
| Defined in: | gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb |
Overview
The details of a DDoS attack.
Constant Summary
Instance Attribute Summary
-
#attack_counters ⇒ Array<Types::SummarizedCounter>
rw
List of counters that describe the attack for the specified time period.
-
#attack_id ⇒ String
rw
The unique identifier (ID) of the attack.
-
#attack_properties ⇒ Array<Types::AttackProperty>
rw
The array of objects that provide details of the
::Aws::Shield
event. -
#end_time ⇒ Time
rw
The time the attack ended, in Unix time in seconds.
-
#mitigations ⇒ Array<Types::Mitigation>
rw
List of mitigation actions taken for the attack.
-
#resource_arn ⇒ String
rw
The ARN (Amazon
::Aws::Shield::Resource
Name) of the resource that was attacked. -
#start_time ⇒ Time
rw
The time the attack started, in Unix time in seconds.
-
#sub_resources ⇒ Array<Types::SubResourceSummary>
rw
If applicable, additional detail about the resource being attacked, for example, IP address or URL.
Instance Method Summary
::Aws::Structure
- Included
| #to_hash | Alias for Aws::Structure#to_h. |
Instance Attribute Details
#attack_counters ⇒ Array
<Types::SummarizedCounter> (rw)
List of counters that describe the attack for the specified time period.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#attack_id ⇒ String
(rw)
The unique identifier (ID) of the attack.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#attack_properties ⇒ Array
<Types::AttackProperty> (rw)
The array of objects that provide details of the ::Aws::Shield
event.
For infrastructure layer events (L3 and L4 events), you can view metrics for top contributors in Amazon CloudWatch metrics. For more information, see Shield metrics and alarms in the WAF Developer Guide.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#end_time ⇒ Time
(rw)
The time the attack ended, in Unix time in seconds.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#mitigations ⇒ Array
<Types::Mitigation> (rw)
List of mitigation actions taken for the attack.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#resource_arn ⇒ String
(rw)
The ARN (Amazon ::Aws::Shield::Resource
Name) of the resource that was attacked.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#start_time ⇒ Time
(rw)
The time the attack started, in Unix time in seconds.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end
#sub_resources ⇒ Array
<Types::SubResourceSummary> (rw)
If applicable, additional detail about the resource being attacked, for example, IP address or URL.
# File 'gems/aws-sdk-shield/lib/aws-sdk-shield/types.rb', line 220
class AttackDetail < Struct.new( :attack_id, :resource_arn, :sub_resources, :start_time, :end_time, :attack_counters, :attack_properties, :mitigations) SENSITIVE = [] include Aws::Structure end


Simple Map Example
Run the following commands in the terminal then refresh this page. This will load a map from the
ros-groovy-rail-maps
package.
- roscore
- rosrun map_server map_server /opt/ros/groovy/share/rail_maps/maps/ilab.pgm
0.05
- roslaunch rosbridge_server rosbridge_websocket.launch


We can see here the performance of different instance types with same limits is almost the same.
Also check the performance of those limited instances to the actual instance performance.
Conclusions:
- Different types of instances with same limits gives almost same performance
with one condition the instance has the necessary resources
- Performance of limited Instance is again almost same as the performance
of a virtual machine with the same amount of resources. There will be slight drop of performance
towards the peak due to the fact that VM is using some resources undearneath and not all resources are
available as compared to the limited instance.
- Resource Utilization of different pods/replicas on the same machine is exactly the same.


Project 2: Armageddon - Atmospheric entry and disruption of asteroids¶
Synopsis:¶
Asteroids entering Earth’s atmosphere are subject to extreme drag forces that decelerate, heat and disrupt the space rocks. The fate of an asteroid is a complex function of its initial mass, speed, trajectory angle and internal strength.
Asteroids 10-100 m in diameter can penetrate deep into Earth’s atmosphere and disrupt catastrophically, generating an atmospheric disturbance (airburst) that can cause damage on the ground. Such an event occurred over the city of Chelyabinsk in Russia, in 2013, releasing energy equivalent to about 520 kilotons of TNT (1 kt TNT is equivalent to \(4.184 \times 10^{12}\) J), and injuring thousands of people (Popova et al., 2013; Brown et al., 2013). An even larger event occurred over Tunguska, an unpopulated area in Siberia, in 1908.
The purpose of this exercise is to develop a fast numerical simulator to predict the fate of asteroids entering Earth’s atmosphere for the purposes of hazard assessment.
Problem definition¶
Equations¶
The dynamics of an asteroid in Earth’s atmosphere is governed by a coupled set of ordinary differential equations:
In these equations, \(v\), \(m\), and \(A\) are the asteroid speed (along trajectory), mass and cross-sectional area, respectively. \(\theta\) is the meteoroid trajectory angle to the horizontal (in radians), \(x\) is the downrange distance of the meteoroid from its entry position, \(z\) is the altitude and \(t\) is time; \(C_D\) is the drag coefficient, \(\rho_a\) is the atmospheric density (a function of altitude ), \(C_H\) is an ablation efficiency coefficient, \(Q\) is the specific heat of ablation; \(C_L\) is a lift coefficient; and \(R_P\) is the planetary radius. All terms use MKS units.
It is common to assume (for simplicity) that, prior to break-up, the radius (and cross-sectional area) of the asteroid remains constant; that is, any mass-loss by ablation does not change the cross-sectional area of the asteroid. We will further assume a spherical asteroid.
A commonly used criterion for the break-up of an asteroid in the atmosphere is when the ram pressure of the air interacting with the asteroid \(\rho_a v^2\) first exceeds the strength of the asteroid \(Y\).
Should break-up occur, the asteroid deforms and spreads laterally as it continues its passage through the atmosphere. As a result its radius and cross-sectional area increase, but the asteroid density is assumed to remain constant (often referred to as ‘pancaking’). It is conventional to define the cross-sectional area of the expanding cloud of fragments as \(A = \pi r^2\) (i.e., assuming a circular cross-section), for use in the above equations.
Several models for the spreading rate \(\frac{dr}{dt}\) have been proposed. In the simplest model, the fragmented asteroid’s spreading rate is related to its along trajectory speed (Hills and Goda, 1993):
Where \(r\) is the asteroid radius, \(\rho_m\) is the asteroid density and \(\alpha\) is a spreading coefficient, often taken to be 0.3.
Note that fragmentation and spreading ceases (\(\frac{dr}{dt} = 0\)) when the ram pressure drops back below the strength of the asteroid \(\rho_a v^2 < Y\).
The figure below shows a typical solution to the above set of equations for an impact airburst scenario. The kinetic energy loss per unit height, which is a good approximation for the energy transferred to the atmosphere as heat (and is often referred to as the energy deposited per km altitude), is shown as a function of altitude.
In this scenario the asteroid experiences breakup at approximately 48-km altitude (denoted by the star), before spreading and decelerating rapidly until an altitude of approximately 15 km at which point the energy loss per unit height is maximum. This point is often considered to be the burst altitude. The total kinetic energy lost by the asteroid at this point is a good estimate of the airburst energy (i.e., the total energy deposited into the atmosphere) for hazard analysis.
Impact scenarios with a burst altitude well (>5 km) above the surface can be considered to be airburst events and are unlikely to form a sizable crater on the ground. In such cases, even if a substantial fraction of the original asteroid survives to the ground it will be decelerated to a very small fraction of its initial speed.
Impact scenarios with a burst altitude below the surface (i.e., peak energy deposition per unit height is not reached before the asteroid strikes the ground) will form a sizable impact crater on the ground and can be considered as a cratering event (although a sizable proportion of the original kinetic energy of the asteroid may be transferred to the air).
Between these scenarios is a complex regime where a low altitude airburst combined with a substantial crater-forming event is likely. This regime is not well understood.
Analytical Solution¶
Assuming no ablation, gravity and lift, and a flat earth, the resulting simplifyed system of ODEs can be solved exactly
By the chain rule
Rearranging we get
Integrating both sides to obtain the solution (writing log for the natural log throughout):
For clarity let’s define the constant
Then initial condition when \(z = z_0, v = v_0 \implies C = \beta e^{-z_0/H}-\log(v_0)\), so our solution is
Function API¶
Python asteroid airburst calculator
-
class
armageddon.
Planet
(atmos_func='exponential', atmos_filename=None, Cd=1.0, Ch=0.1, Q=10000000.0, Cl=0.001, alpha=0.3, Rp=6371000.0, g=9.81, H=8000.0, rho0=1.2)¶ The class called Planet is initialised with constants appropriate for the given target planet, including the atmospheric density profile and other constants
Set up the initial parameters and constants for the target planet
- Parameters
atmos_func (string, optional) – Function which computes atmospheric density, rho, at altitude, z. Default is the exponential function
rho = rho0 exp(-z/H)
. Options areexponential
,tabular
,constant
andmars
atmos_filename (string, optional) – If
atmos_func
='tabular'
, then set the filename of the table to be read in here.Cd (float, optional) – The drag coefficient
Ch (float, optional) – The heat transfer coefficient
Q (float, optional) – The heat of ablation (J/kg)
Cl (float, optional) – Lift coefficient
alpha (float, optional) – Dispersion coefficient
Rp (float, optional) – Planet radius (m)
rho0 (float, optional) – Air density at zero altitude (kg/m^3)
g (float, optional) – Surface gravity (m/s^2)
H (float, optional) – Atmospheric scale height (m)
- Returns
- Return type
None
-
RK_45
(f, initial_state, strength, density, t0=0.0, t_max=2000, dt=0.05)¶ Return velocity, mass, angle, altitude, distance, radius (in order) calculation for each time step using Runge_Kutta 4th order Please note this function will consider burst effect in dr/dt calculation :param f: composite of derivative function of velocity, mass, angle, altitude, distance, radius (in order) :type f: function :param initial state: composite of initial condition of velocity, mass, angle, altitude, distance, radius (in order) :type initial state: array or list :param t0 = float: initial time :param t_max = float: End of ODE calculation :param dt = float, optional: Output time step, in s
- Returns
- Return type
a Numpy array containing velocity, mass, angle, altitude, distance, radius (in order)
-
analyse_outcome
(result)¶ Inspect a prefound solution to calculate the impact and airburst stats
- Parameters
result (DataFrame) – pandas DataFrame with velocity, mass, angle, altitude, horizontal distance, radius and dedz as a function of time
- Returns
outcome – dictionary with details of airburst and/or cratering event. For an airburst, this will contain the following keys:
burst_peak_dedz
,burst_altitude
,burst_total_ke_lost
.For a cratering event, this will contain the following keys:
impact_time
,impact_mass
,impact_speed
.All events should also contain an entry with the key
outcome
, which should contain one of the following strings:Airburst
,Cratering
orAirburst and cratering
- Return type
Dict
-
calculate_energy
(result)¶ Function to calculate the kinetic energy lost per unit altitude in kilotons TNT per km, for a given solution.
- Parameters
result (DataFrame) – A pandas DataFrame with columns for the velocity, mass, angle, altitude, horizontal distance and radius as a function of time
- Returns
Result – Returns the DataFrame with additional column
dedz
which is the kinetic energy lost per unit altitude- Return type
DataFrame
-
deg_to_rad
(deg)¶ Returns an angle in radians for a given angle in degrees
-
f_com
(t, state, strength, density)¶ Composite of derivative function of velocity, mass, angle, altitude, distance, radius (in order) :param t: :type t: time step :param state: composite of current condition of velocity, mass, angle, altitude, distance, radius (in order) for every time step calculation :type state: array or list
- Returns
- Return type
a Numpy array containing derivative result of velocity, mass, angle, altitude, distance, radius (in order)
-
forward_euler
(f, initial_state, strength, density, t0=0.0, t_max=2000, dt=0.05)¶ Forward Euler time-stepper. u0 is the initial condition. t0 is the initial time; t_max is the end time. dt is the time step size.
-
impact
(radius, velocity, density, strength, angle, init_altitude=100000.0, dt=0.05, radians=False)¶ Solve the system of differential equations for a given impact event. Also calculates the kinetic energy lost per unit altitude and analyses the result to determine the outcome of the impact.
- Parameters
radius (float) – The radius of the asteroid in meters
velocity (float) – The entery speed of the asteroid in meters/second
density (float) – The density of the asteroid in kg/m^3
strength (float) – The strength of the asteroid (i.e., the ram pressure above which fragmentation and spreading occurs) in N/m^2 (Pa)
angle (float) – The initial trajectory angle of the asteroid to the horizontal By default, input is in degrees. If ‘radians’ is set to True, the input should be in radians
init_altitude (float, optional) – Initial altitude in m
dt (float, optional) – The output timestep, in s
radians (logical, optional) – Whether angles should be given in degrees or radians. Default=False Angles returned in the DataFrame will have the same units as the input
- Returns
Result (DataFrame) – A pandas DataFrame containing the solution to the system. Includes the following columns:
velocity
,mass
,angle
,altitude
,distance
,radius
,time
,dedz
outcome (Dict) – dictionary with details of airburst and/or cratering event. For an airburst, this will contain the following keys:
burst_peak_dedz
,burst_altitude
,burst_total_ke_lost
.For a cratering event, this will contain the following keys:
impact_time
,impact_mass
,impact_speed
.All events should also contain an entry with the key
outcome
, which should contain one of the following strings:Airburst
,Cratering
orAirburst and cratering
-
rad_to_degrees
(rad)¶ Returns an angle in degrees for a given angle in radians
-
solve_analytical
(radius, velocity, density, strength, angle, init_altitude=100000.0, n=100)¶ Provides analytical solutions to the ODEs in simplified scenario
- Parameters
radius (float) – The radius of the asteroid in meters
velocity (float) – The entery speed of the asteroid in meters/second
density (float) – The density of the asteroid in kg/m^3
strength (float) – The strength of the asteroid (i.e., the ram pressure above which fragmentation and spreading occurs) in N/m^2 (Pa)
angle (float) – The initial trajectory angle of the asteroid to the horizontal
init_altitude (float, optional) – Initial altitude in m
n (integer, optional) – number of data points in analytical solution to compute
- Returns
- Return type
Two arrays containing analytical solution velocity, v, against height, z.
-
solve_atmospheric_entry
(radius, velocity, density, strength, angle, method='FE', init_altitude=100000.0, dt=0.05, radians=False)¶ Solve the system of differential equations for a given impact scenario
- Parameters
radius (float) – The radius of the asteroid in meters
velocity (float) – The entery speed of the asteroid in meters/second
density (float) – The density of the asteroid in kg/m^3
strength (float) – The strength of the asteroid (i.e., the ram pressure above which fragmentation and spreading occurs) in N/m^2 (Pa)
angle (float) – The initial trajectory angle of the asteroid to the horizontal By default, input is in degrees. If ‘radians’ is set to True, the input should be in radians
method (Runge Kutta 4th Order ('RK45') or Forward Euler ('FE')) –
init_altitude (float, optional) – Initial altitude in m
dt (float, optional) – The output timestep, in s
radians (logical, optional) – Whether angles should be given in degrees or radians. Default=False Angles returned in the DataFrame will have the same units as the input
- Returns
Result – A pandas DataFrame containing the solution to the system. Includes the following columns:
velocity
,mass
,angle
,altitude
,distance
,radius
,time
- Return type
DataFrame
-
armageddon.
solve_ensemble
(planet, fiducial_impact, variables, radians=False, rmin=8, rmax=12)¶ Run asteroid simulation for a distribution of initial conditions and find the burst distribution
- Parameters
planet (object) – The Planet class instance on which to perform the ensemble calculation
fiducial_impact (dict) – Dictionary of the fiducial values of radius, angle, strength, velocity and density
variables (list) – List of strings of all impact parameters to be varied in the ensemble calculation
rmin (float, optional) – Minimum radius, in m, to use in the ensemble calculation, if radius is one of the parameters to be varied.
rmax (float, optional) – Maximum radius, in m, to use in the ensemble calculation, if radius is one of the parameters to be varied.
- Returns
ensemble – DataFrame with columns of any parameters that are varied and the airburst altitude
- Return type
DataFrame


THE NAVIGATOR: A MEDIEVAL ODYSSEY A film review by Shane R. Burridge Copyright 1996 Shane R. Burridge
The Navigator: A Medieval Odyssey (1988) 92m.
New Zealand director Vincent Ward had some difficulty getting this, his second feature, off the ground despite critical acclaim for his debut VIGIL. Story is seen through the eyes of Griffin (Hamish McFarlane, who does too much earnest yelling for my liking), a boy living in an isolated, snowbound village in 14th-century Cumbria. His older brother Connor (Bruce Lyons) has just returned home to bring news of the plague decimating the surrounding lands. Fearing the wrath of God, an expedition is sent from the village to place, by way of an offering, a cross atop a church on `the far side of the Earth' (New Zealand). Griffin claims he has already seen the journey (if not lived it) and serves as the party's navigator - although what he is navigating is not only space but also time and consciousness.
Ward jumps the gap of six hundred years and the distance of half a planet assuredly, but his unfixed narrative, interrupted by repetitious flashbacks (which, since Griffin is using them to map their future path, are simultaneously flashforwards), is less comfortable. This is a film based on an idea: Ward has a beginning and an ending, but no strong narrative meat in the middle. The party's odyssey is over before it can reach the epic quality of a true odyssey. THE NAVIGATOR does not concern itself much with the spirit of adventure (which would serve this particular story well) but instead sticks to the more appropriately medieval doom-laden concerns of God, death, and prophecy. I'm glad at least that Ward didn't turn his time-travel story into the kind of culture-shock cliche that depends almost entirely on anachronism gags. I also like the way he keeps the nameless city (ostensibly Auckland) deserted and empty of all activity save that of the machines and vehicles that prowl the shadows like nocturnal scavengers. His approach reinforces the notion that everything Griffin is seeing is a dream (it's like an ultra-sober WIZARD OF OZ - it's even bookended with black and white sequences and features a journey to a magical city), but what prevents us from dismissing his story as imaginary is the accuracy of his visions. Griffin sees highways, television, a submarine, and even a glimpse of a second potential apocalypse - the 20th century's nuclear update of the plague. This is Ward's nod to New Zealand's strong anti-nuclear stance at the time, one which did not find favor with the US military and caused much public debate.
Film has ambition and imagination, but still appears incomplete. You might come out of this feeling that something is lacking. But you have to admire Ward for sticking to his vision and producing something other than the black comedies and urban/rural `social' dramas that had the NZ film industry in a stranglehold. His keen visual eye and deft smoke-and-mirrors approach proves that a real director can still make a class act out of a modest budget.
The review above was posted to the
rec.arts.movies.reviews newsgroup (de.rec.film.kritiken for German reviews).
The Internet Movie Database accepts no responsibility for the contents of the
review and has no editorial control. Unless stated otherwise, the copyright
belongs to the author.
Please direct comments/criticisms of the review to relevant newsgroups.
Broken URLs inthe reviews are the responsibility of the author.
The formatting of the review is likely to differ from the original due
to ASCII to HTML conversion.
Related links: index of all rec.arts.movies.reviews reviews


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WA Reader is a simple web-app to view your backed-up WhatsApp chats in a WhatsApp Web user-interface. You upload the ".txt" file of your chat which
you can get from the
Email Conversation button in your WhatsApp.
It's free and code is open sourced and you can find the source code
here.
Huge shout out to
@krzysiekh for creating the awesome logo we currently have.
Note: WA Reader was built to read a piece of my personal chat, so no guarantees on it working all the time.
{% if data['is_prod'] %}
{% endif %}


A three round quiz based on electronics .
Round 1- GENERAL QUIZ:
10-15 easy to medium level questions related to electronics were asked in MCQ format and one-fourth of the participants were forwarded to next round.
.
Round 2- BRICK BREAKER
A mysterious picture related to electronics was hidden behind 9 bricks.
Participants were asked to break bricks numbered from 1 to 9.Teams which identified the picture correctly after breaking minimum no. of bricks gained maximum no. of points. And in the next stage 6 pictures somehow related to the disclosed picture, participants are asked to find out the relation between them . based on the scores few top teams were selected for the last round.
 Wheel was designed in such a way that it would be set in motion as soon as team members say 'START' and it would stopped on team's command
of 'STOP'. Wheel contained many options such as videos, speech or audio, projects related to electronics and many more. Teams were asked to answer the questions related to the option which they have encountered on the wheel.
The team with highest number of points a t the end of third round was declared winner.


We are not ready yet, but sign up, and we will let you know when it is live!
Our community finds the best content from around the web and presents it to you in an easy to follow course.
 We believe nothing beats hands on learning.
You are going to learn why things work - not just how things work. This is the real knowledge that will let you make amazing things.
SparkWaves teaches you how to make original and amazing things. Examples of things you will learn in this course are:
This is not another guide on plugging an arduino together.


Sir Kristof Rodemai:
What is your opinion on the current state of affairs? The disintegration of royal authority has been disastrous for the kingdom, with chaos and dissent running rampant throughout the land. Now even the evil spirits are acting with impunity.
Why am am wasting time talking to you? I demand to speak with your clan leader!
(This quest may only be undertaken by a clan leader of a level 3 clan.)


Maximum likelihood estimation of log-binomial regression with special functionality when the MLE is on the boundary of the parameter space.
| Version: | 1.2 |
| Depends: | R (≥ 3.2.0) |
| Imports: | MASS |
| Published: | 2018-01-19 |
| Author: | Bernardo B. Andrade |
| Maintainer: | Bernardo Andrade <bbandrade at unb.br> |
| License: | GPL-2 |
| NeedsCompilation: | no |
| CRAN checks: | lbreg results |
| Reference manual: | lbreg.pdf |
| Package source: | lbreg_1.2.tar.gz |
| Windows binaries: | r-devel: lbreg_1.2.zip, r-release: lbreg_1.2.zip, r-oldrel: lbreg_1.2.zip |
| OS X binaries: | r-release: lbreg_1.2.tgz, r-oldrel: lbreg_1.2.tgz |
| Old sources: | lbreg archive |
Please use the canonical form https://CRAN.R-project.org/package=lbreg to link to this page.


Joyner Lucas Thinks Drug Culture in Hip-Hop Led to Juice Wrld's Death
by VladTVJoyner Lucas took to Twitter to share his thoughts on Juice Wrld's untimely death, which he believes was brought on by aspects of hip-hop culture that glorify drugs.
Joyner wrote on Monday (December 9), "Juice wrld was 21. He was a product of our generation of rappers who glorified drugs and made it cool. Im blaming Yal n***az for this sh*t. All that lean and pills n***az glorify and talk about. You teaching the kids to do it. Smh you happy now? Rip @JuiceWorlddd. Gone too soon."
This comes after more details were released about the moments leading up to Juice Wrld having a seizure and later dying. People that were on the plane with Juice Wrld say that he took several "unknown" pills during the flight, with an anonymous source saying that the rapper had a problem with Percocets. The FBI also seized 70 pounds of marijuana that was stored in luggage aboard the private jet, while two of Juice Wrld's security guards were arrested on gun charges.


|
Bitstream Interpretation Library (BIL)
0.1
|
Contains binary serialization functions for Device class. More...
#include <istream>
#include <ostream>
Go to the source code of this file.
Namespaces | |
| namespace | bil |
Macros | |
| #define | BIL_DEVICEBS_HPP |
Functions | |
| void | bil::writeBinary (const Device &data, std::ostream &outputStream) |
| Writes data from a Device into a binary stream. | |
| void | bil::readBinary (Device &data, std::istream &inputStream) |
| Reads data into a Device from a binary stream. |
Contains binary serialization functions for Device class.
Definition in file DeviceBS.hpp.
| #define BIL_DEVICEBS_HPP |
Definition at line 8 of file DeviceBS.hpp.


Properties are the most important part of any JavaScript object.
Properties are the values associated with a JavaScript object.
A JavaScript object is a collection of unordered properties.
Properties can usually be changed, added, and deleted, but some are read only.
The syntax for accessing the property of an object is:
or
or
| The expression must evaluate to a property name. |
The JavaScript for...in statement loops through the properties of an object.
The block of code inside of the for...in loop will be executed once for each property.
Looping through the properties of an object:
You can add new properties to an existing object by simply giving it a value.
Assume that the person object already exists - you can then give it new properties:
| You cannot use reserved words for property (or method) names. JavaScript naming rules apply. |
The delete keyword deletes a property from an object:
The delete keyword deletes both the value of the property and the property itself.
After deletion, the property cannot be used before it is added back again.
The delete operator is designed to be used on object properties. It has no effect on variables or functions.
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( ECMAScript 5 has methods for both getting and setting all property attributes)
JavaScript objects inherit the properties of their prototype.
The delete keyword does not delete inherited properties, but if you delete a prototype property, it will affect all objects inherited from the prototype.


Index
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Apps
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Games
CounterStrings Generator
Length:
*3*5*
*3*5*
See also
James Bach Counterstrings


Q1. What types of services does CAT offer?
Ans. It provides a platform to check if application is Cloudable or not. It also helps you to know Migration Pattern and Cloud Provider for the application.
Q2. Who can use the application?
Ans. If anyone wants to Migrate there application to cloud then they can use the application to know if their application is cloudable or not.
Q3. How to get access to the application, do I need to create an account?
Ans. No need to create an account. First of all you have to contact the owner or the CAT application. Then they will create a new user(account) on behalf of you and will provide credential. Now using those credential you can access to the application.
Q4. As a client can I add any user or create user if yes then how can i create a new user?
Ans. Definitely you can create users for accessing your applications. You just need to go to users console where you can find Add User button. Just click on that you can add new user by providing the user information.
Q5. How to update user or delete user as per need? Is it possible?
Ans. Yes, it is possible to delete and update user. In user console there is a button for deleting and updating users. By clicking on Delete button you can delete a user. By clicking on Update User button a new window will appear by providing user information you can update it.
Q6. Can I import user if I have a list of users information in my excel file?
Yes, we have provided import user functionality in the application. Import User button is present on users console. After clicking on the button you can import users. If you do not have the CSV file, we have provided a sample CSV in the application. You can fill the file and import it as well.
Q7. How can I export users list?
Ans. You just need to go to users console and click on Export Users button. It will download a CSV file containing all the users information.
Q8. Is it a configurable application? If yes how it works?
Ans. Yes, it is a configurable application. You can add any number of Users, Questions, Applications to it. As per your requirement set it and will check the cloudability, Migration Pattern, Cloud Provider for the application.
Q9. How can I assist an application?
Ans. For Assisting application go to application console then under action column assist button is present. After clicking on the button you can give answer for your application.
Q10. How to add questions?
Ans. To add questions go to the assessment question console then click on Add Questions button to add questions. you can add answers for your questions here. you can also select the question type here.
Q11. Can the application have different clients?
Ans. Yes we have different clients and different questions as well as different set of rules for them.
Q12. Can I deactivate users questions and application?
Ans. Yes we are providing buttons in respective pages for this purpose. For this you have to go to respective console and under action column deactivate button is present. Click on those button to make them invisible from UI.
Q12. Can I export PDF file reports for my application?
Ans. Yes, you can. In the console go to report section. There you can find button for exporting PDF files for your application.
Q13. What is Decision Tree. How it works?
Ans. It contains the rules that is sets to check Cloudability, Migration Pattern, Cloud Provider. You can set rules here. Based on the rules it will provide you results.
Q14. How to set rules for Cloudability check?
Ans. Under Decision Tree module Cloudable module is present. After clicking on cloudable module all the cloudable questions will appear. There you can provide the rules for cloudable.
Q15. What all type of Migration Pattern are there?
Ans. Public PAAS, Replatform, ReHost
Q16. How to set rules for different migration pattern?
Ans. Under decision tree Migration Pattern module is present. There you have to select for which migration pattern you want to add rules. After select that a new page will appear where it will contain questions and you have to provide rules for them.
Q17. What all type of Cloud Providers are there?
Ans. There are different type of Cloud Provider are present some of them are AWS, AZURE, Openshift, Global IT cloud. Cloud Provider decides to which cloud you can move you application.
It is a featuse we are providing. Suppose you made some changes to your rule sets and you want your finalize applications to execute as per the new rule sets. For that select the applications and select the respective check boxes for whice rule you want to execute your application and click on Run Rules button.Q18. Can we set rules for cloud provide?
Ans. Yes, you can. Just add the rules under Cloud Providers module present in decision tree.
Q19. What is Reassessment?
It is a feature we are providing. Suppose you made some changes to your rule sets and you want your finalize applications to execute as per the new rule sets. For that select the applications and select the respective checkboxes for which rule you want to execute your application and click on Run Rules button.
Hope you find the application useful and friendly. If you find any issue let us know in Feedback section so we can improve more.


 Cow cupim venison tail tongue prosciutto, boudin rump sirloin tenderloin pork chop.
 Cow cupim venison tail tongue prosciutto, boudin rump sirloin tenderloin pork chop.


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The server part is just used to let the two client parts be able to communicate with each other. The port number is arbitrarily selected by you or your partner but be sure not to conflict with any of other processes in both of your computers and be sure to be the same as what will be inputed in the client parts.


Each document has the following fields:
| Property Name | Type | Description |
|---|---|---|
| class | String | The simple class name |
| qualifiedClass | String | The qualified class name |
| name | String | The simple name |
| annotations | Array | An array of annotations |
| modifiers | Array | An array of modifiers ("public", "static", etc.) |
| description | String | A description of the class/enum/annotation/method |
| since | String | Which JDK this first appeared in (may not be present) |
| path | String | The path of the documentation, relative to http://docs.oracle.com/javase/[version]/docs/api/ |
| kind | String | The kind of symbol. One of:
|
For classes, enums, and interfaces, the document also contains the following properties:
| Property Name | Type | Description |
|---|---|---|
| superClass | String | The fully-qualified name of the superclass |
| implements | Arrays | An array of interface names this class or enum implements, or this interface extends |
| constructors | Array | An array containing these properties of constructors:
|
| methods | Array | An array containing these properties of methods:
|
{ "name" : "Locale", "qualifiedName" : "java.util.Locale", "class" : "Locale", "qualifiedClass" : "java.util.Locale", "annotations" : [], "modifiers" : ["final", "public"], "description" : "A Locale object represents a specific geographical, political,\n or cultural region...", "superClass":"java.lang.Object", "implements" : ["java.io.Serializable","java.lang.Cloneable"], "since" : "1.1", "constructors": [ { "name": "Locale", "modifiers": [ "public" ], "params": [ { "type": "String", "name": "language" }, { "type": "String", "name": "country" }, { "type": "String", "name": "variant" } ], "description": "Construct a locale from language, country and variant...", "path": "java/util/Locale.html#Locale(java.lang.String, java.lang.String, java.lang.String)" }, ], "methods" : [ ..., { "name" : "getDisplayLanguage", "qualifiedName" : "java.util.Locale.getDisplayLanguage", "annotations" : [], "modifiers" : ["public"], "params" : [ { "type" : "Locale", "name" : "inLocale" } ], "returnType" : "String", "description" : "Returns a name for the locale's language ...", "returns" : null, "path" : "java/util/Locale.html#getDisplayLanguage(java.util.Locale)" }, ... ], "kind" : "class", "path" : "java/util/Locale.html" }
For methods, the following properties are also available:
| Property Name | Type | Description |
|---|---|---|
| params | Array |
An array of parameter descriptors with the following properties:
|
| returnType | String | The return type of the method |
| throws | Array | An array of Exception subclass names declared by the method (subclasses of java.lang.RuntimeException are typically not declared) |
| returns | String | The description of the return value of the method (may not be present) |
{ "name" : "skip", "class" : "FileInputStream", "qualifiedClass" : "java.io.FileInputStream", "qualifiedName" : "java.io.FileInputStream.skip", "params" : [ { "type" : "long", "name" : "n", "description" : "the number of bytes to be skipped." } ], "annotations" : [], "modifiers" : ["public"], "returnType" : "long", "throws" : ["IOException"], "description" : "Skips over and discards n bytes of data from the\n input stream...", "returns" : "the actual number of bytes skipped.", "path" : "java/io/FileInputStream.html#skip(long)", "kind" : "method" }
Classes, enums, interfaces, and annotations will be mapped to the
com.solveforall.programming.java.JdkClass
recognition key,
while methods will be mapped to the com.solveforall.programming.java.JdkMethod
recognition key.


--- layout: post status: publish published: true title: "纪念贴:As Time Goes By同名讨论组正式上线纪念贴" author: Leask author_login: leask author_email<EMAIL_ADDRESS>author_url: https://leaskh.com wordpress_id: 245 wordpress_url: http://leaskh.wordpress.com/2009/05/24/%e7%ba%aa%e5%bf%b5%e8%b4%b4as-time-goes-by%e5%90%8c%e5%90%8d%e8%ae%a8%e8%ae%ba%e7%bb%84%e6%ad%a3%e5%bc%8f%e4%b8%8a%e7%ba%bf%e7%ba%aa%e5%bf%b5%e8%b4%b4 date: '2009-05-24 17:33:05 +0800' date_gmt: '2009-05-24 17:33:05 +0800' categories: tags: [] comments: [] ---


This page contains information and guidelines for improving the reliability, flexibility and stability of your JupyterHub deployment. Many of the settings described is only purposeful for a better autoscaling experience.
To summarize, for a good autoscaling experience, we recommend you to:
Enable the continuous image puller, to prepare added nodes for arriving users.
Enable pod priority and add user placeholders, to scale up nodes ahead of real users’ arrivals.
Enable the user scheduler, to pack users tight on some nodes and let other nodes become empty and scaled down.
Set up an autoscaling node pool and dedicate it to user pods by tainting the node and requiring user pods, which tolerate the nodes’ taint, to schedule on these nodes. This way, only user pods can then block scale down.
Set appropriate user resource requests and limits, to allow a reasonable amount of users to share a node.
A reasonable final configuration for efficient autoscaling could look something like this:
scheduling: userScheduler: enabled: true podPriority: enabled: true userPlaceholder: enabled: true replicas: 4 userPods: nodeAffinity: matchNodePurpose: require cull: enabled: true timeout: 3600 every: 300 # The resources requested is very important to consider in # relation to your machine type. If you have a n1-highmem-4 node # on Google Cloud for example you get 4 cores and 26 GB of # memory. With the configuration below you would be able to have # at most about 50 users per node. This can be reasonable, but it # may not be, it will depend on your users. Are they mostly # writing and reading or are they mostly executing code? singleuser: cpu: limit: 4 guarantee: 0.05 memory: limit: 4G guarantee: 512M
If a user pod is scheduled on a node requesting a Docker image that isn’t already pulled onto that node, the user will have to wait for it. If the image is large, the wait can be 5 to 10 minutes. This commonly occurs in two situations:
A new single-user image is introduced (helm upgrade)
helm upgrade
With the hook-image-puller enabled (the default), the user images being introduced will be pulled to the nodes before the hub pod is updated to utilize the new image. The name hook-image-puller is a technical name referring to how a Helm hook is used to accomplish this, a more informative name would have been pre-upgrade-image-puller.
NOTE: With this enabled your helm upgrade will take a long time if you introduce a new image as it will wait for the pulling to complete. We recommend that you add --timeout 10m0s or similar to your helm upgrade command to give it enough time.
--timeout 10m0s
The hook-image-puller is enabled by default. To disable it, use the following snippet in your config.yaml:
config.yaml
prePuller: hook: enabled: false
A node is added (Cluster Autoscaler)
The amount of nodes in a Kubernetes cluster can increase, either by manually scaling up the cluster size or by a cluster autoscaler. As new nodes will come fresh without any images on their disks, a user pod arriving to this node will be forced to wait while the image is pulled.
With the continuous-image-puller enabled (enabled by default), the user’s container image will be pulled when a new node is added. New nodes can for example be added manually or by a cluster autoscaler. The continuous image-puller uses a daemonset to force Kubernetes to pull the user image on all nodes as soon as a node is present.
The continuous-image-puller is enabled by default. To disable it, use the following snippet in your config.yaml:
prePuller: continuous: # NOTE: if used with a Cluster Autoscaler, also add user-placeholders enabled: false
It is important to realize that if the continuous-image-puller together with a Cluster Autoscaler (CA) won’t guarantee a reduced wait time for users. It only helps if the CA scales up before real users arrive, but the CA will generally fail to do so. This is because it will only add a node if one or more pods won’t fit on the current nodes but would fit more if a node is added, but at that point users are already waiting. To scale up nodes ahead of time we can use user-placeholders.
The hook-image-puller and the continuous-image-puller has various sources influencing what images they will pull, as it does in order to prepare nodes ahead of time that may need images. These sources are all found in the values provided with the Helm chart (that can be overridden with config.yaml) under the following paths:
singleuser.image
singleuser.profileList[].kubespawner_override.image
singleuser.extraContainers[].image
prePuller.extraImages.someName
singleuser.networkTools.image
prePuller.pause.image
For example, with the following configuration, three images would be pulled by the image pullers in order to prepare the nodes that may end up using these images.
singleuser: image: name: jupyter/minimal-notebook tag: 2343e33dec46 profileList: - display_name: "Minimal environment" description: "To avoid too much bells and whistles: Python." default: true - display_name: "Datascience environment" description: "If you want the additional bells and whistles: Python, R, and Julia." kubespawner_override: image: jupyter/datascience-notebook:2343e33dec46 prePuller: extraImages: myOtherImageIWantPulled: name: jupyter/all-spark-notebook tag: 2343e33dec46
A Cluster Autoscaler (CA) will help you add and remove nodes from the cluster. But the CA needs some help to function well. Without help, it will both fail to scale up before users arrive and scale down nodes aggressively enough without disrupting users.
A Cluster Autoscaler (CA) will add nodes when pods don’t fit on available nodes but would fit if another node is added. But, this may lead to a long waiting time for the pod, and as a pod can represent a user, it can lead to a long waiting time for a user. There are now options to address this.
With Kubernetes 1.11+ (that requires Helm 2.11+), Pod Priority and Preemption was introduced. This allows pods with higher priority to preempt / evict pods with lower priority if that would help the higher priority pod fit on a node.
This priority mechanism allows us to add dummy users or user-placeholders with low priority that can take up resources until a real user with (higher priority) requires it. At this time, the lower priority pod will get preempted to make room for the high priority pod. This now evicted user-placeholder will now be able to signal to the CA that it needs to scale up.
The user placeholders will have the same resources requests as the default user. This means that if you have three user placeholders running, real users will only need to wait for a scale up if more than three users arrive in an interval of time less than it takes to make a node ready for use.
To use three user placeholders for example, that can do their job thanks to pod priority, add the following configuration:
scheduling: podPriority: enabled: true userPlaceholder: # Specify three dummy user pods will be used as placeholders replicas: 3
For further discussion about user placeholders, see @MinRK’s excellent post where he analyzed its introduction on mybinder.org.
IMPORTANT: Further settings may be required for successful use of the pod priority depending on how your cluster autoscaler is configured. This is known to work on GKE, but we don’t know how it works on other cloud providers or kubernetes. See the configuration reference for more details.
Scaling up is the easy part, scaling down is harder. To scale down a node, certain technical criteria need to be met. The central one is in order for a node to be scaled down, it must be free from pods that aren’t allowed to be disrupted. Pods that are not allowed to be disrupted are, for example, real user pods, important system pods, and some JupyterHub pods (without a permissive PodDisruptionBudget). Consider for example that many users arrive to your JupyterHub during the daytime. New nodes are added by the CA. Some system pod ends up on the new nodes along with the user pods for some reason. At night when the culler has removed many inactive pods from some nodes. They are now free from user pods but there is still a single system pod stopping the CA from removing the node.
To avoid these scale down failures, we recommend using a dedicated node pool for the user pods. That way, all the important system pods will run at one or a limited set of nodes, so the autoscaling user nodes can scale from 0 to X and back from X to 0.
This section about scaling down efficiently, will also explains how the user scheduler can help you reduce the failures to scale down due to blocking user pods.
To set up a dedicated node pool for user pods, we can use taints and tolerations. If we add a taint to all the nodes in the node pool, and a toleration on the user pods to tolerate being scheduled on a tainted node, we have practically dedicated the node pool to be used only by user pods.
To make user pods schedule on a dedicated node for them, you need to do the following:
Setup a node pool (with autoscaling), a certain label, and a certain taint.
If you need help on how to do this, please refer to your cloud providers documentation. A node pool may be called a node group.
The label: hub.jupyter.org/node-purpose=user
hub.jupyter.org/node-purpose=user
NOTE: Cloud providers often have their own labels, separate from kubernetes labels, but this label must be a kubernetes label.
The taint: hub.jupyter.org/dedicated=user:NoSchedule
hub.jupyter.org/dedicated=user:NoSchedule
NOTE: You may need to replace / with _ due cloud provider limitations. Both taints are tolerated by the user pods.
/
_
Make user pods require to be scheduled on the node pool setup above
If you don’t require the user pods to schedule on their dedicated node, you may fill up the nodes where the other software runs. This can cause a helm upgrade command to fail. For example, you may have run out of resources for non-user pods that cannot schedule on the autoscaling node pool as they need during a rolling update.
The default setting is to make user pods prefer to be scheduled on nodes with the hub.jupyter.org/node-purpose=user label, but you can also make it required using the configuration below.
scheduling: userPods: nodeAffinity: # matchNodePurpose valid options: # - ignore # - prefer (the default) # - require matchNodePurpose: require
NOTE: If you end up not using a dedicated node pool for users and want to scale down efficiently, you will need to learn about PodDisruptionBudget resources and do quite a bit more work in order to avoid ending up with almost empty nodes not scaling down.
If you have users starting new servers while the total number of active users decreasing, how will you free up a node so it can be scaled down?
This is what the user scheduler helps you with. The user scheduler’s only task is to schedule new user pods to the most utilized node. This can be compared to the default scheduler that instead always tries to schedule pods so the least utilized node. Only the user scheduler would allow the underutilized nodes to free up over time as the total amount of users decrease but a few users still arrive.
NOTE: If you don’t want to scale down the nodes you have, it would make more sense to let the users spread out and utilize all available nodes. Only activate the user scheduler if you have an autoscaling node pool.
To see the user scheduler in action, look at the following graph from the mybinder.org deployment. The graph is from when the user scheduler was enabled for the first time, it is showing the amount of user pods active on five different nodes. When the user scheduler was enabled, two nodes were in time freed up from user pods and scaled down.
To enable the user scheduler:
scheduling: userScheduler: enabled: true
NOTE: For the user scheduler to work well, you need old user pods to shut down at some point. Make sure to properly configure the culler.


 The term computer programmer can refer to a specialist in one area of
computers, or to a generalist who writes code for many kinds of software.
A programmer's most oft-used computer language (e.g., Assembly, COBOL, C, C++, C#, JavaScript, Lisp, Python) may
be prefixed to the term programmer. Some who work with web programming languages also prefix their titles with
web. programmer gaurav
A range of occupations that involve programming also often require a range of other, similar skills, for
example: (software) developer, web developer, mobile applications developer, embedded firmware developer,
software engineer, computer scientist, game programmer, game developer and software analyst. The use of the term
programmer as applied to these positions is sometimes considered an insulting simplification or even derogatory.
British countess and mathematician Ada Lovelace is often considered to be the first computer programmer, as she
was the first to publish part of a program (specifically an algorithm) intended for implementation on Charles
Babbage's analytical engine, in October 1842. The algorithm was used to calculate Bernoulli numbers.[7] Because
Babbage's machine was never completed as a functioning standard in Lovelace's time, she unfortunately never had
the opportunity to see the algorithm in action.
The ENIAC programming team, consisting of Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas
and Ruth Lichterman were the first regularly working programmers.[8][9] International Programmers' Day is
celebrated annually on 7 January.[10] In 2009, the government of Russia decreed a professional annual holiday
known as Programmers' Day to be celebrated on 13 September (12 September in leap years). It had already been an
unofficial holiday before that in many countries.
The word software was used as early as 1953, but did not regularly appear in print until the 1960s.[11] Before
this time, computers were programmed either by customers or the few commercial computer manufacturers of the
time, such as UNIVAC and IBM. The first company founded to specifically provide software products and services
was the Computer Usage Company, in 1955.[12]
The software industry expanded in the early 1960s, almost immediately after computers were first sold in
mass-produced quantities. Universities, governments and businesses created a demand for software. Many of these
programs were written in-house by full-time staff programmers; some were distributed freely between users of a
particular machine for no charge. And others were developed on a commercial basis. Other firms, such as Computer
Sciences Corporation (founded in 1959) also started to grow. The computer/hardware manufacturers soon started
bundling operating systems, system software and programming environments with their machines.[citation needed]
The industry expanded greatly with the rise of the personal computer ("PC") in the mid-1970s, which brought
computing to the average office worker. In the following years the PC also helped create a constantly-growing
market for games, applications and utilities software. CP/M, later replaced by DOS, Microsoft's Windows popular
operating system of the time.[13] portfolio programmer gaurav
In the early years of the 21st century, another successful business model has arisen for hosted software, called
software-as-a-service, or SaaS. From the point of view of producers of some proprietary software, SaaS reduces
the concerns about unauthorized copying, since it can only be accessed through the Web, and by definition, no
client software is loaded onto the end user's PC. SaaS is typically run out of the cloud.
Computer programmers write, test, debug, and maintain the detailed instructions, called computer programs, that
computers must follow to perform their functions. Programmers also conceive, design, and test logical structures
for solving problems by computer. Many technical innovations in programming — advanced computing technologies
and sophisticated new languages and programming tools — have redefined the role of a programmer and elevated
much of the programming work done today. Job titles and descriptions may vary, depending on the organization.
Programmers work in many settings, including corporate information technology ("IT") departments, big software
companies, small service firms and government entities of all sizes. Many professional programmers also work for
consulting companies at client sites as contractors. Licensing is not typically required to work as a
programmer, although professional certifications are commonly held by programmers. Programming is widely
considered a profession (although some[who?] authorities disagree on the grounds that only careers with legal
licensing requirements count as a profession).
Programmers' work varies widely depending on the type of business for which they are writing programs. For
example, the instructions involved in updating financial records are very different from those required to
duplicate conditions on an aircraft for pilots training in a flight simulator. Simple programs can be written in
a few hours, more complex ones may require more than a year of work, while others are never considered
'complete' but rather are continuously improved as long as they stay in use. In most cases, several programmers
work together as a team under a senior programmer's supervision. portfolio
A software engineer writing JavaScript portfolio programmer gaurav
Programmers write programs according to the specifications determined primarily by more senior programmers and
by systems analysts. After the design process is complete, it is the job of the programmer to convert that
design into a logical series of instructions that the computer can follow. The programmer codes these
instructions in one of many programming languages. Different programming languages are used depending on the
purpose of the program. COBOL, for example, is commonly used for business applications that typically run on
mainframe and midrange computers, whereas Fortran is used in science and engineering. C++ and Python are widely
used for both scientific and business applications. Java, C#, JS and PHP are popular programming languages for
Web and business applications. Programmers generally know more than one programming language and, because many
languages are similar, they often can learn new languages relatively easily. In practice, programmers often are
referred to by the language they know, e.g. as Java programmers, or by the type of function they perform or
environment in which they work: for example, database programmers, mainframe programmers, or Web developers.
When making changes to the source code that programs are made up of, programmers need to make other programmers
aware of the task that the routine is to perform. They do this by inserting comments in the source code so that
others can understand the program more easily and by documenting their code. To save work, programmers often use
libraries of basic code that can be modified or customized for a specific application. This approach yields more
reliable and consistent programs and increases programmers' productivity by eliminating some routine steps.
Testing and debugging
Programmers test a program by running it and looking for bugs (errors). As they are identified, the programmer
usually makes the appropriate corrections, then rechecks the program until an acceptably low level and severity
of bugs remain. This process is called testing and debugging. These are important parts of every programmer's
job. Programmers may continue to fix these problems throughout the life of a program. Updating, repairing,
modifying, and expanding existing programs is sometimes called maintenance programming. Programmers may
contribute to user guides and online help, or they may work with technical writers to do such work.
Application versus system programming
Computer programmers often are grouped into two broad types: application programmers and systems programmers.
Application programmers write programs to handle a specific job, such as a program to track inventory within an
organization. They also may revise existing packaged software or customize generic applications which are
frequently purchased from independent software vendors. Systems programmers, in contrast, write programs to
maintain and control computer systems software, such as operating systems and database management systems. These
workers make changes in the instructions that determine how the network, workstations, and CPU of the system
handle the various jobs they have been given and how they communicate with peripheral equipment such as printers
and disk drives. programmer gaurav
Types of software portfolio
Programmers in software development companies may work directly with experts from various fields to create
software – either programs designed for specific clients or packaged software for general use – ranging from
video games to educational software to programs for desktop publishing and financial planning. Programming of
packaged software constitutes one of the most rapidly growing segments of the computer services industry. Some
companies or organizations – even small ones – have set up their own IT team to ensure the design and
development of in-house software to answer to very specific needs from their internal end-users, especially when
existing software are not suitable or too expensive. This is for example the case in research
laboratories.[citation needed]
In some organizations, particularly small ones, people commonly known as programmer analysts are responsible for
both the systems analysis and the actual programming work. The transition from a mainframe environment to one
that is based primarily on personal computers (PCs) has blurred the once rigid distinction between the
programmer and the user. Increasingly, adept end users are taking over many of the tasks previously performed by
programmers. For example, the growing use of packaged software, such as spreadsheet and database management
software packages, allows users to write simple programs to access data and perform calculations.[citation
needed] programmer gaurav
In addition, the rise of the Internet has made web development a huge part of the programming field. Currently
more software applications are web applications that can be used by anyone with a web browser.[citation needed]
Examples of such applications include the Google search service, the Outlook.com e-mail service, and the Flickr
photo-sharing service. programmer gaurav
Programming editors, also known as source code editors, are text editors that are specifically designed for
programmers or developers for writing the source code of an application or a program. Most of these editors
include features useful for programmers, which may include color syntax highlighting, auto indentation,
auto-complete, bracket matching, syntax check, and allows plug-ins. These features aid the users during coding,
debugging and testing.[17] portfolio programmer gaurav
Programming is the process of creating a set of instructions that tell a computer how to perform a task.
Programming can be done using a variety of computer "languages," such as SQL, Java, Python, and C++.


Taxable Accounts
Address
Spendable balance
Balance
Locked balance
Funds received this period
Funds withheld this period
Withholding percent
Other Balances
Identity
Address
Balance


This would output the variable as literal text.
three: But this doesn't work. *DOOWB
And this would throw an error:
three: *DOOWB But this doesn't work.
YAML supports variables, or repeated nodes. The simplest explanation is that you define something as a variable by preceding it with "&NAME value" and you can refer to it with "*NAME" e.g.:
# YAML
some_thing: &NAME foobar
other_thing: *NAME
Parses to:
{"other_thing": "foobar", "some_thing": "foobar"}


The 'Is final' field has been checked.
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{% for field in form2_fields %}
{{field.label_tag}}
{{field.help_text}}
{{field.field}}
{% endfor %}


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2013-11-03 16:45:57
New version - 1.63v avatars, chat feedback
Hi, you asked, you got it.
- Avatars.
- Chat feedback by voting thumbs down and up.
- Option to show virtual assistant profile for invitation message.
execute doc/update_db/update_45.sql and follow standard upgrade instructions
Create directory var/userphoto make sure that php can write to it. Just chmod 664 var/userphoto
Screenshot of new widget :)
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2013-11-02 20:56:00
Evening update
- Desktop client will show constantly notifications if there is atleast one unaccepted chat. If you uncheck I'm online notifications won't be shown.
- Updated demo page, with link to MacOS client.
- Online visitors list shows is it returned visitor or not.
- If user is new Green arrow will be shown
- If user is returning Grey arrow will be shown
Seems all.
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2013-11-01 21:39:34
Helloween update :)
Some updates and one thing for fun:
- Changed global background to a little bit lighter
- Changed search to "like". Regarding performance it's going to be slow if you will have thousands of chats. So i suggest use archive module and search only then you need.
- Updated translations - full Russian translation.
- Fixed bug then sound was not always played, now I just use autoplay.
- Chat widget window is a little bit cleaner now. Less borders, more space.
 Now you see how fully automated invitation and responses is doing it's amazing job. :)
And I remind one more time. There is no real person behind demo.
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2013-10-30 21:34:17
If anyone wonders how I calculate installation numbers
Installation is detected if.
- User comes from referer site
- I check do i have this referer in my database if i do not have it
- I download referer page and check for live helper chat code.
- And ony then I increase counter, so you can imagine that downloads number is much bigger :)
I do not have any secret code in installation process itself wich would inform me about installation so installation number is much bigger i ques. :)
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2013-10-30 21:29:05
Evening updates
- I accidentaly submited demo index where every hour at 11 and 12 minutes there we exit writing that demo was reinstalling. :D So this one is fixed now.
- Then file was uploaded by opreator in message nick was presented as customer. It's fixed now.
- We now have chat's search functionality.
Cheers, and now I need a rest...


{% extends "templates/layout.html" %} {% block tempcode %}
Hi, this is user hexcola, a specific user.


Happy Extraterrestrial Visitor day!
Tuesday February 10
Tuesday February 10
Today, take some time to think about who might visit our planet or how we ourselves might reach for the stars one day.
Alternatively, put on a costume to take their place instead and scare your friends to death.
Share / www.scary-costumes.com
What is FiestApp?
Wish your friends a happy holiday.
Create your own holidays.
Find fun local events.
Why FiestApp?
To connect with your friends.
To start a conversation.
To do something new and exciting.
To start a tradition.
To never be bored again.
Requirements
Connectivity
■ Fetching holidays
■ Tracking their popularity
■ Twitter trends
User Interaction
■ Search and rate holidays
■ Participate in events
■ Create your own events
Use of sensors
■ GPS for local events
■ Shake for random holiday
■ Camera to add photos
Android services
■ Share button
■ Map view
■ Push notifications
■ Google Wallet
FiestApp supports four requirements.
Fetch, track rating in combination with Twitter trends.
User can search and rate holidays, participate and create.
GPS to get location and nearby events, shake for random holiday, add photos to events with camera
Share button for interesting holidays, map view for directions, push notifications to remind about participating.
Google Wallet to e.g. provide scary costumes for ET-day
Feasibility
Start with basic application.
Adding more functionality per iteration.
Version control.
Start with very basic application
First list of events, later GPS, Camera, shake, etc.
Add more functionality on and on with each iteration
Github to track progress and handle version control
Avoid conflicts
Existing apps
Bizarre Holidays
Existing app with a few features. Very basic.
Not attractive. Ugly Facebook/Twitter buttons.
Holidays on the same day are listed below each other
Large background only refers to the first day.
No description
Cramped
Not clear
Holidays on the same day are written after each other
Better organized
Divisors with intuitive day naming
Small description, more detailed description
Top: tabs
Bottom: search for interesting days, find favorite days
More stuff to be added
Thanks for your attention
Interested investors, please contact us after the lecture


RT @rands: The answer to the question "How many Powerpoint slides do I need to make my point?" is "Why are you using Powerpoint?"
11/14/2011, 10:34:31 AM
Favs: 0
Retweets: 0
link--- layout: tweet ---
RT @rands: The answer to the question "How many Powerpoint slides do I need to make my point?" is "Why are you using Powerpoint?"
11/14/2011, 10:34:31 AM
Favs: 0
Retweets: 0
link


Weapon of choice: Rasberry Pi
Weapon of choice: Object Oriented Programming
Weapon of choice: Laptop Charger
Weapon of choice: Soylent
Weapon of choice: MacBook
Weapon of choice: Keyboard


Client-side Mongo, data on the wire, pub/sub, access control & latency compensation.
In Meteor, the client and server share the same database API
talks directly to a MongoDB
doesn't.
...but you can think of it as though it does
Actually talks to Meteor's minimongo, which is an in-memory client side Mongo
and Meteor keeps them in sync
publishes sets of JSON documents
subscribes to document sets
Let the client decide how to render it!
Meteor uses DDP; the Distrubuted Data Protocol to patch client's database when documents change
Local document changes assumed to succeed and UI is updated immediately
This is called
Behind the scenes, Meteor sends request to server and server allows/denies/errors/succeeds


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{{ range ( where .Site.RegularPages "Type" "post" ) }}
-
{{ .Title | emojify }}
{{ end }}
{{ define "main" }}
Looking for something to read?
You've come to the right place!
All content on rajat.co is divided into two main sections: Blog Posts and Shorts. Shorts are... well, shorter! You can even browse all categories and tags that they are filed in.
Blog Posts See all
Long form content to read at leisure
Shorts See all
Quick and easy reads!
Categories See all
Broader topics I like to write about
Tags See all
Narrower but numerous topics


Mangalore Institute Of Technology and Engineering
Collegedunia.com
career360.com
siksha.com
justdial.com
getmyuni.com
facebook.com
Extract data
Next->
<-previous


Since its first release, the Key Promoter X has now more than 240.000 downloads. It is top-rated on the JetBrains site, and since it is entirely open-source, other plugin developers can browse through the code to understand how things are implemented.
The plugin is not for me or a by-product of something I would do anyway. It is for you who want to learn shortcuts in IntelliJ IDEA, and I give away some of my free time to keep it up to date and fix bugs. If you appreciate my efforts, then please donate some money. And don't forget to star the GitHub repository and leave a rating on the JetBrains plugin site.
This message will only appear once for each new version. The donation link can later be found in the plugin description under Settings | Plugins | Key Promoter X.