Class MatrixObject
Transformation matrix.
Inherited Members
Namespace: Core2D.Renderer
Assembly: Core2D.dll
Syntax
public class MatrixObject : ObservableObject, IMatrixObject, IObservableObject, INotifyPropertyChanged, ICopyable
Constructors
| Improve this Doc View SourceMatrixObject()
Initializes a new instance of the MatrixObject.
Declaration
public MatrixObject()
MatrixObject(Double, Double, Double, Double, Double, Double)
Initializes a new instance of the MatrixObject.
Declaration
public MatrixObject(double m11, double m12, double m21, double m22, double offsetX, double offsetY)
Parameters
| Type | Name | Description |
|---|---|---|
| System.Double | m11 | The value of the first row and first column. |
| System.Double | m12 | The value of the first row and second column. |
| System.Double | m21 | The value of the second row and first column. |
| System.Double | m22 | The value of the second row and second column. |
| System.Double | offsetX | The value of the third row and first column. |
| System.Double | offsetY | The value of the third row and second column. |
Fields
| Improve this Doc View SourceIdentity
Gets an identity MatrixObject.
Declaration
public static readonly IMatrixObject Identity
Field Value
| Type | Description |
|---|---|
| IMatrixObject |
Properties
| Improve this Doc View SourceM11
Gets or sets the value of the first row and first column of this matrix.
Declaration
public double M11 { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
M12
Gets or sets the value of the first row and second column of this matrix.
Declaration
public double M12 { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
M21
Gets or sets the value of the second row and first column of this matrix.
Declaration
public double M21 { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
M22
Gets or sets the value of the second row and second column of this matrix.
Declaration
public double M22 { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
OffsetX
Gets or sets the value of the third row and first column of this matrix.
Declaration
public double OffsetX { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
OffsetY
Gets or sets the value of the third row and second column of this matrix.
Declaration
public double OffsetY { get; set; }
Property Value
| Type | Description |
|---|---|
| System.Double |
Methods
| Improve this Doc View SourceCopy(IDictionary<Object, Object>)
Copies the object.
Declaration
public override object Copy(IDictionary<object, object> shared)
Parameters
| Type | Name | Description |
|---|---|---|
| System.Collections.Generic.IDictionary<System.Object, System.Object> | shared | The shared objects dictionary. |
Returns
| Type | Description |
|---|---|
| System.Object | The copy of the object. |
Overrides
| Improve this Doc View SourceParse(String)
Parses a IMatrixObject string.
Declaration
public static IMatrixObject Parse(string s)
Parameters
| Type | Name | Description |
|---|---|---|
| System.String | s | The string. |
Returns
| Type | Description |
|---|---|
| IMatrixObject | The parsed IMatrixObject. |
ShouldSerializeM11()
Check whether the M11 property has changed from its default value.
Declaration
public virtual bool ShouldSerializeM11()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ShouldSerializeM12()
Check whether the M12 property has changed from its default value.
Declaration
public virtual bool ShouldSerializeM12()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ShouldSerializeM21()
Check whether the M21 property has changed from its default value.
Declaration
public virtual bool ShouldSerializeM21()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ShouldSerializeM22()
Check whether the M22 property has changed from its default value.
Declaration
public virtual bool ShouldSerializeM22()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ShouldSerializeOffsetX()
Check whether the OffsetX property has changed from its default value.
Declaration
public virtual bool ShouldSerializeOffsetX()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ShouldSerializeOffsetY()
Check whether the OffsetY property has changed from its default value.
Declaration
public virtual bool ShouldSerializeOffsetY()
Returns
| Type | Description |
|---|---|
| System.Boolean | Returns true if the property has changed; otherwise, returns false. |
ToString()
Returns a string that represents the current object.
Declaration
public override string ToString()
Returns
| Type | Description |
|---|---|
| System.String | A string that represents the current object. |


Carbonic anhydrase
This table contains entries for the three classes of carbonic anhydrases in a few representative organisms from the UniProt databases, with links to view the original protein entries. Details for a known protein inhibitor of carbonic anhydrase is also given.
|
|
UniProt
|
Protein name |
Organism |
|
Carbonic anhydrase alpha-class |
Carbonic
anhydrase VB, mitochondrial [Precursor] (EC <IP_ADDRESS>) |
Homo sapiens |
|
|
|
Carbonic
anhydrase I (EC <IP_ADDRESS>) |
Homo sapiens |
|
|
|
Carbonic anhydrase II (EC
<IP_ADDRESS>) |
Homo
sapiens |
|
|
|
Carbonic
anhydrase III (EC
<IP_ADDRESS>) |
Homo
sapiens |
|
|
|
Carbonic anhydrase IV [Precusor] |
Homo
sapiens |
|
|
|
Carbonic anhydrase
VA, mitochondrial [Precursor] (EC <IP_ADDRESS>) |
Homo
sapiens |
|
|
|
Carbonic anhydrase VI [Precursor]
|
Homo
sapiens |
|
|
|
Carbonic
anhydrase VII (EC
<IP_ADDRESS>) |
Homo
sapiens |
|
|
|
Carbonic anhydrase-related protein |
Homo
sapiens |
|
|
|
Carbonic
anhydrase IX [Precursor] |
Homo
sapiens |
|
|
|
Carbonic anhydrase-related protein 10 |
Homo sapiens |
|
|
|
Carbonic
anhydrase-related protein 2 [Precursor] |
Homo sapiens |
|
|
|
Carbonic anhydrase XII
[Precursor] |
Homo sapiens |
|
|
|
Carbonic
anhydrase XIII (EC
<IP_ADDRESS>) |
Homo
sapiens |
|
|
|
Carbonic
anhydrase XIV [Precursor] |
Homo
sapiens |
|
|
|
Carbonic
anhydrase [Precursor] |
Klebsiella pneumoniae Proteobacteria |
|
|
|
Carbonic
anhydrase [Precursor] |
Neisseria gonorrhoeae Proteobacteria |
|
|
|
Cell surface-binding protein (Carbonic anhydrase homolog) |
Vaccinia
virus |
|
|
Carbonic anhydrase beta-class |
Carbonic anhydrase 1 |
Flaveria linearis Plant |
|
|
|
Carbonic anhydrase 2 [Fragment] |
Flaveria linearis Plant |
|
|
|
Carbonic anhydrase, chloroplast [Precursor] (EC <IP_ADDRESS>) |
Pisum sativum Garden pea |
|
|
|
Carbonic anhydrase (EC <IP_ADDRESS>) |
Flaveria bidentis Plant |
|
|
|
Protein YadF (Carbonic anhydrase) |
Escherichia coli Proteobacteria |
|
|
|
Carbonic anhydrase (EC <IP_ADDRESS>) |
Escherichia coli Proteobacteria |
|
|
|
Carbonic anhydrase (EC <IP_ADDRESS>) |
Porphyridium purpureum Red
algae |
|
|
|
Carbonic anhydrase |
Methanobacterium thermoautotrophicum Archaeon |
|
|
|
Carbonic anhydrase 3 (EC <IP_ADDRESS>) |
Flaveria bidentis Plant |
|
|
Carbonic anhydrase gamma-class |
Carbonic anhydrase [Precursor] |
Methanosarcina thermophila Archaeon |
|
|
|
Carbonic anhydrases/acetyltransferases, isoleucine patch superfamily |
Thermoanaerobacter tengcongensis Firmicutes
bacteria |
|
|
|
Carbonic anhydrase, family 3 |
Vibrio cholerae Cholera-causing
bacteria |
|
|
Carbonic anhydrase inhibitors |
Inhibitor of carbonic anhydrase [Precursor] |
Sus scrofa
Pig |


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WITNESS LIST Government Reform Committee August 8, 2003-10:00A HB 6 Against: Gregg, Brock (Assoc. of Tx. Professional Educators ATPE) On: Featherston, Pattie (Teacher Retirement System) Hollingsworth, Lonnie (Texas Classroom Teachers Ass'n.) Jung, Ronnie (Teacher Retirement System) Melina Raab, Ted (Texas Federation of Teachers) Nail, William S. (Employees Retirement System) Zucker, Dr. Charles (Texas Faculty Association) HB 17 Against: Bacot, Jeffrey (Texas Health Care Purchasing Alliance) DeLeon, Hector (Self) Gregg, Brock (ATPE-Assoc. of Tx. Professional Educators) Hollingsworth, Lonnie (Texas Classroom Teachers Ass'n.) Melina Raab, Ted (Texas Federation of Teachers) Mizcles, Amy (The Arc of Texas) On: Ford, Ruthie (Comptroller of Public Accounts) Greenfield, Stuart (Self) Keeton Strayhorn, Carole (Comptroller of Public Accounts) Ressel, Betty (Comptroller's Office) HB 20 Against: Allaway, Bill (Texas Taxpayers and Research Assn. (TTARA)) On: Ancira, Jesse (Texas Comptroller of Public Accounts) Hamilton, Billy (Comptroller of Public Accounts)


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"Because life is too short to parse command line parameters"
1. Overview
JCommander is a very small Java framework that makes it trivial to parse command line parameters. You annotate fields with descriptions of your options:
import com.beust.jcommander.Parameter;
public class Args {
@Parameter
private List<String> parameters = new ArrayList<>();
@Parameter(names = { "-log", "-verbose" }, description = "Level of verbosity")
private Integer verbose = 1;
@Parameter(names = "-groups", description = "Comma-separated list of group names to be run")
private String groups;
@Parameter(names = "-debug", description = "Debug mode")
private boolean debug = false;
}
and then you simply ask JCommander to parse:
Args args = new Args();
String[] argv = { "-log", "2", "-groups", "unit" };
JCommander.newBuilder()
.addObject(args)
.build()
.parse(argv);
Assert.assertEquals(jct.verbose.intValue(), 2);
Here is another example:
class Main {
@Parameter(names={"--length", "-l"})
int length;
@Parameter(names={"--pattern", "-p"})
int pattern;
public static void main(String ... argv) {
Main main = new Main();
JCommander.newBuilder()
.addObject(main)
.build()
.parse(argv);
main.run();
}
public void run() {
System.out.printf("%d %d", length, pattern);
}
}
$ java Main -l 512 --pattern 2
512 2
2. Types of options
The fields representing your parameters can be of any type. Basic types (Integer
, Boolean
, Enum
, etc…) are supported by default and you can write type converters to support any other type (custom types, etc…).
In fact, JCommander provides a rather comprehensive set of built-in conversions for commonly used special types, just to name the most notable ones (list is incomplete): char[]
, File
, Path
, URI
, URL
, InetAddress
, Date
(ISO 8601).
2.1. Boolean
When a Parameter annotation is found on a field of type boolean
or Boolean
, JCommander interprets it as an option with an arity of 0:
@Parameter(names = "-debug", description = "Debug mode")
private boolean debug = false;
Such a parameter does not require any additional parameter on the command line and if it’s detected during parsing, the corresponding field will be set to true. If you want to define a boolean parameter that’s true by default, you can declare it as having an arity of 1. Users will then have to specify the value they want explicitly:
@Parameter(names = "-debug", description = "Debug mode", arity = 1)
private boolean debug = true;
Invoke with either of:
program -debug true
program -debug false
When a Parameter annotation is found on a field of type String
, Integer
, int
, Long
or long
, JCommander will parse the following parameter and it will attempt to cast it to the right type:
@Parameter(names = "-log", description = "Level of verbosity")
private Integer verbose = 1;
java Main -log 3
will cause the field verbose to receive the value 3. However:
$ java Main -log test
will cause an exception to be thrown.
2.2. Lists
When a Parameter annotation is found on a field of type List
, JCommander will interpret it as an option that can occur multiple times:
@Parameter(names = "-host", description = "The host")
private List<String> hosts = new ArrayList<>();
will allow you to parse the following command line:
$ java Main -host host1 -verbose -host host2
When JCommander is done parsing the line above, the field hosts will contain the strings "host1"
and "host2"
.
2.3. Password
If one of your parameters is a password or some other value that you do not wish to appear in your history or in clear, you can declare it of type password and JCommander will then ask you to enter it in the console:
public class ArgsPassword {
@Parameter(names = "-password", description = "Connection password", password = true)
private String password;
}
When you run your program, you will get the following prompt:
Value for -password (Connection password):
You will need to type the value at this point before JCommander resumes.
2.4. Echo Input
In Java 6, by default, you will not be able to see what you type for passwords entered at the prompt (Java 5 and lower will always show the password). However, you can override this by setting echoInput to true
(default is false
and this setting only has an effect when password is true
):
public class ArgsPassword {
@Parameter(names = "-password", description = "Connection password", password = true, echoInput = true)
private String password;
}
3. Custom types (converters and splitters)
To bind parameters to custom types or change the way how JCommander splits parameters (default is to split via comma) JCommander provides two
interfaces IStringConverter
and IParameterSplitter
.
3.1. Custom types - Single value
Use either the converter=
attribute of the @Parameter
or implement IStringConverterFactory
.
3.1.1. By annotation
By default, JCommander parses the command line into basic types only (strings, booleans, integers and longs). Very often, your application actually needs more complex types (such as files, host names, lists, etc.). To achieve this, you can write a type converter by implementing the following interface:
public interface IStringConverter<T> {
T convert(String value);
}
For example, here is a converter that turns a string into a File:
public class FileConverter implements IStringConverter<File> {
@Override
public File convert(String value) {
return new File(value);
}
}
Then, all you need to do is declare your field with the correct type and specify the converter as an attribute:
@Parameter(names = "-file", converter = FileConverter.class)
File file;
JCommander ships with a few common converters (for more info please see the implementations of IStringConverter
).
Note
If a converter is used for a List
field:
@Parameter(names = "-files", converter = FileConverter.class)
List<File> files;
And the application is called as follows:
$ java App -files file1,file2,file3
JCommander will split the string file1,file2,file3
into file1
, file2
, file3
and feed it one by one to the converter.
For an alternative solution to parse a list of values, see Custom types - List value.
3.1.2. By factory
If the custom types you use appear multiple times in your application, having to specify the converter in each annotation can become tedious. To address this, you can use an IStringConverterFactory
:
public interface IStringConverterFactory {
<T> Class<? extends IStringConverter<T>> getConverter(Class<T> forType);
}
For example, suppose you need to parse a string representing a host and a port:
$ java App -target example.com:8080
You define the holder class :
public class HostPort {
public HostPort(String host, String port) {
this.host = host;
this.port = port;
}
final String host;
final Integer port;
}
and the string converter to create instances of this class:
class HostPortConverter implements IStringConverter<HostPort> {
@Override
public HostPort convert(String value) {
String[] s = value.split(":");
return new HostPort(s[0], Integer.parseInt(s[1]));
}
}
The factory is straightforward:
public class Factory implements IStringConverterFactory {
public Class<? extends IStringConverter<?>> getConverter(Class forType) {
if (forType.equals(HostPort.class)) return HostPortConverter.class;
else return null;
}
You can now use the type HostPort
as a parameter without any converterClass attribute:
public class ArgsConverterFactory {
@Parameter(names = "-hostport")
private HostPort hostPort;
}
All you need to do is add the factory to your JCommander object:
ArgsConverterFactory a = new ArgsConverterFactory();
JCommander jc = JCommander.newBuilder()
.addObject(a)
.addConverterFactory(new Factory())
.build()
.parse("-hostport", "example.com:8080");
Assert.assertEquals(a.hostPort.host, "example.com");
Assert.assertEquals(a.hostPort.port.intValue(), 8080);
Another advantage of using string converter factories is that your factories can come from a dependency injection framework.
3.2. Custom types - List value
Use the listConverter=
attribute of the @Parameter
annotation and assign a custom IStringConverter
implementation to convert a String
into a List
of values.
3.2.1. By annotation
If your application needs a list of complex types, write a list type converter by implementing the same interface as before:
public interface IStringConverter<T> {
T convert(String value);
}
where T
is a List
.
For example, here is a list converter that turns a string into a List<File>
:
public class FileListConverter implements IStringConverter<List<File>> {
@Override
public List<File> convert(String files) {
String [] paths = files.split(",");
List<File> fileList = new ArrayList<>();
for(String path : paths){
fileList.add(new File(path));
}
return fileList;
}
}
Then, all you need to do is declare your field with the correct type and specify the list converter as an attribute:
@Parameter(names = "-files", listConverter = FileListConverter.class)
List<File> file;
Now if you call for application as in the following example:
$ java App -files file1,file2,file3
The parameter file1,file2,file3
is given to the listConverter
and will the properly processed.
JCommander ships with a default converter for String
values.
3.3. Splitting
Use the splitter=
attribute of the @Parameter
annotation and assign a custom IParameterSplitter
implementation to handle how parameters are split in sub-parts.
3.3.1. By annotation
By default, JCommander tries to split parameters for List
field types on commas.
To split parameters on other characters, you can write a custom splitter by implementing the following interface:
public interface IParameterSplitter {
List<String> split(String value);
}
For example, here is a splitter that splits a string on semicolon:
public static class SemiColonSplitter implements IParameterSplitter {
public List<String> split(String value) {
return Arrays.asList(value.split(";"));
}
}
Then, all you need to do is declare your field with the correct type and specify the splitter as an attribute:
@Parameter(names = "-files", converter = FileConverter.class, splitter = SemiColonSplitter.class)
List<File> files;
JCommander will split the string file1;file2;file3
into file1
, file2
, file3
and feed it one by one to the converter.
4. Parameter validation
Parameter validation can be performed in two different ways: at the individual parameter level or globally.
4.1. Individual parameter validation
You can ask JCommander to perform early validation on your parameters by providing a class that implements the following interface:
public interface IParameterValidator {
/**
* Validate the parameter.
*
* @param name The name of the parameter (e.g. "-host").
* @param value The value of the parameter that we need to validate
*
* @throws ParameterException Thrown if the value of the parameter is invalid.
*/
void validate(String name, String value) throws ParameterException;
}
Here is an example implementation that will make sure that the parameter is a positive integer:
public class PositiveInteger implements IParameterValidator {
public void validate(String name, String value)
throws ParameterException {
int n = Integer.parseInt(value);
if (n < 0) {
throw new ParameterException("Parameter " + name + " should be positive (found " + value +")");
}
}
}
Specify the name of a class implementing this interface in the validateWith
attribute of your @Parameter
annotations:
@Parameter(names = "-age", validateWith = PositiveInteger.class)
private Integer age;
Attempting to pass a negative integer to this option will cause a ParameterException to be thrown.
Multiple validators may be specified:
@Parameter(names = "-count", validateWith = { PositiveInteger.class, CustomOddNumberValidator.class })
private Integer value;
4.2. Global parameter validation
After parsing your parameters with JCommander, you might want to perform additional validation across these parameters, such as making sure that two mutually exclusive parameters are not both specified.
/**
* Validate all parameters.
*
* @param parameters
* Name-value-pairs of all parameters (e.g. "-host":"localhost").
*
* @throws ParameterException
* Thrown if validation of the parameters fails.
*/
void validate(Map<String, Object> parameters) throws ParameterException;
Here is an example implementation that will make sure that the boolean options --quiet
and --verbose
are not enabled at the same time:
public static class QuietAndVerboseAreMutualExclusive implements IParametersValidator {
@Override
public void validate(Map<String, Object> parameters) throws ParameterException {
if (parameters.get("--quiet") == TRUE && parameters.get("--verbose") == TRUE)
throw new ParameterException("--quiet and --verbose are mutually exclusive");
}
}
Specify the name of a class implementing this interface in the parametersValidators
attribute of your @Parameters
annotations:
@Parameters(parametersValidators = QuietAndVerboseAreMutualExclusive.class)
class Flags {
@Parameter(names = "--quiet", description = "Do not output anything")
boolean quiet;
@Parameter(names = "--verbose", description = "Output detailed information")
boolean verbose;
}
Attempting to enable --quiet
and --verbose
at the same time will cause a ParameterException
to be thrown.
Multiple validators may be specified:
@Parameters(paremetersValidators = { QuietAndVerboseAreMutualExclusive.class, VerboseNeedsLevel.class })
class Flags {
@Parameter(names = "--quiet", description = "Do not output anything")
boolean quiet;
@Parameter(names = "--verbose", description = "Output detailed information")
boolean verbose;
@Parameter(names = "--level", description = "Detail level of verbose information")
Integer level;
}
5. Main parameter
So far, all the @Parameter
annotations we have seen had defined an attribute called names
. You can define one (and at most one) parameter without any such attribute. This parameter can be either a List<String>
or a single field
(for example a String
or a type that has a converter, e.g. File
), in which case there needs to be exactly one main parameter.
@Parameter(description = "Files")
private List<String> files = new ArrayList<>();
@Parameter(names = "-debug", description = "Debugging level")
private Integer debug = 1;
will allow you to parse:
$ java Main -debug file1 file2
and the field files will receive the strings "file1"
and "file2"
.
6. Private parameters
Parameters can be private:
public class ArgsPrivate {
@Parameter(names = "-verbose")
private Integer verbose = 1;
public Integer getVerbose() {
return verbose;
}
}
ArgsPrivate args = new ArgsPrivate();
JCommander.newBuilder()
.addObject(args)
.build()
.parse("-verbose", "3");
Assert.assertEquals(args.getVerbose().intValue(), 3);
7. Parameter separators
By default, parameters are separated by spaces, but you can change this setting to allow different separators:
$ java Main -log:3
or
$ java Main -level=42
You define the separator with the @Parameters annotation:
@Parameters(separators = "=")
public class SeparatorEqual {
@Parameter(names = "-level")
private Integer level = 2;
}
8. Multiple descriptions
You can spread the description of your parameters on more than one class. For example, you can define the following two classes:
public class ArgsMaster {
@Parameter(names = "-master")
private String master;
}
public class ArgsSlave {
@Parameter(names = "-slave")
private String slave;
}
and pass these two objects to JCommander:
ArgsMaster m = new ArgsMaster();
ArgsSlave s = new ArgsSlave();
String[] argv = { "-master", "master", "-slave", "slave" };
JCommander.newBuilder()
.addObject(new Object[] { m , s })
.build()
.parse(argv);
Assert.assertEquals(m.master, "master");
Assert.assertEquals(s.slave, "slave");
9. @ syntax
JCommander supports the @ syntax, which allows you to put all your options into a file and pass this file as parameter:
-verbose
file1
file2
file3
$ java Main @/tmp/parameters
10. Arities (multiple values for parameters)
10.1. Fixed arities
If some of your parameters require more than one value, such as the following example where two values are expected after -pairs:
$ java Main -pairs slave master foo.xml
then you need to define your parameter with the arity attribute and make that parameter a List<String>
:
@Parameter(names = "-pairs", arity = 2, description = "Pairs")
private List<String> pairs;
You don’t need to specify an arity for parameters of type boolean
or Boolean
(which have a default arity of 0) and of types String
, Integer
, int
, Long
and long
(which have a default arity of 1).
Also, note that only List<String>
is allowed for parameters that define an arity. You will have to convert these values yourself if the parameters you need are of type Integer
or other (this limitation is due to Java’s erasure).
10.2. Variable arities
You can specify that a parameter can receive an indefinite number of parameters, up to the next option. For example:
program -foo a1 a2 a3 -bar
program -foo a1 -bar
Such a parameter can be parsed in two different ways.
10.2.1. With a list
If the number of following parameters is unknown, your parameter must be of type List<String>
and you
need to set the boolean variableArity
to true
:
@Parameter(names = "-foo", variableArity = true)
public List<String> foo = new ArrayList<>();
10.2.2. With a class
Alternatively, you can define a class in which the following parameters will be stored, based on their order of appearance:
static class MvParameters {
@SubParameter(order = 0)
String from;
@SubParameter(order = 1)
String to;
}
@Test
public void arity() {
class Parameters {
@Parameter(names = {"--mv"}, arity = 2)
private MvParameters mvParameters;
}
Parameters args = new Parameters();
JCommander.newBuilder()
.addObject(args)
.args(new String[]{"--mv", "from", "to"})
.build();
Assert.assertNotNull(args.mvParameters);
Assert.assertEquals(args.mvParameters.from, "from");
Assert.assertEquals(args.mvParameters.to, "to");
}
11. Multiple option names
You can specify more than one option name:
@Parameter(names = { "-d", "--outputDirectory" }, description = "Directory")
private String outputDirectory;
will allow both following syntaxes:
$ java Main -d /tmp
$ java Main --outputDirectory /tmp
12. Other option configurations
You can configure how options are looked up in a few different ways:
-
JCommander#setCaseSensitiveOptions(boolean)
: specify whether options are case sensitive. If you call this method withfalse
, then"-param"
and"-PARAM"
are considered equal. -
JCommander#setAllowAbbreviatedOptions(boolean)
: specify whether users can pass abbreviated options. If you call this method withtrue
then users can pass"-par"
to specify an option called-param
. JCommander will throw aParameterException
if the abbreviated name is ambiguous.
13. Required and optional parameters
If some of your parameters are mandatory, you can use the required
attribute (which default to false
):
@Parameter(names = "-host", required = true)
private String host;
If this parameter is not specified, JCommander will throw an exception telling you which options are missing.
14. Default values
The most common way to specify a default value for your parameters is to initialize the field at declaration time:
private Integer logLevel = 3;
For more complicated cases, you might want to be able to reuse identical default values across several main classes or be able to specify these default values in a centralized location such as a .properties
or an XML file. In this case, you can use an IDefaultProvider
:
public interface IDefaultProvider {
/**
* @param optionName The name of the option as specified in the names() attribute
* of the @Parameter option (e.g. "-file").
*
* @return the default value for this option.
*/
String getDefaultValueFor(String optionName);
}
By passing an implementation of this interface to your JCommander object, you can now control which default value will be used for your options. Note that the value returned by this method will then be passed to a string converter, if any is applicable, thereby allowing you to specify default values for any types you need.
For example, here is a default provider that will assign a default value of 42 for all your parameters except "-debug"
:
private static final IDefaultProvider DEFAULT_PROVIDER = new IDefaultProvider() {
@Override
public String getDefaultValueFor(String optionName) {
return "-debug".equals(optionName) ? "false" : "42";
}
};
// ...
JCommander jc = JCommander.newBuilder()
.addObject(new Args())
.defaultProvider(DEFAULT_PROVIDER)
.build()
For the most common cases, there is no need to actually implement IDefaultProvider
, as JCommander contains the classes PropertyFileDefaultProvider
and EnvironmentVariableDefaultProvider
for reading defaults from a property file (jcommander.properties
by default) or from an environment variable (JCOMMANDER_OPTS
by default).
15. Help parameter
If one of your parameters is used to display some help or usage, you need use the help attribute:
@Parameter(names = "--help", help = true)
private boolean help;
If you omit this boolean, JCommander will instead issue an error message when it tries to validate your command and it finds that you didn’t specify some of the required parameters.
16. More complex syntaxes (commands)
Complex tools such as git
or svn
understand a whole set of commands, each of which with their own specific syntax:
$ git commit --amend -m "Bug fix"
Words such as "commit"
above are called "commands" in JCommander, and you can specify them by creating one arg object per command:
@Parameters(separators = "=", commandDescription = "Record changes to the repository")
private class CommandCommit {
@Parameter(description = "The list of files to commit")
private List<String> files;
@Parameter(names = "--amend", description = "Amend")
private Boolean amend = false;
@Parameter(names = "--author")
private String author;
}
@Parameters(commandDescription = "Add file contents to the index")
public class CommandAdd {
@Parameter(description = "File patterns to add to the index")
private List<String> patterns;
@Parameter(names = "-i")
private Boolean interactive = false;
}
Then you register these commands with your JCommander object. After the parsing phase, you call getParsedCommand()
on your JCommander object, and based on the command that is returned, you know which arg object to inspect (you can still use a main arg object if you want to support options before the first command appears on the command line):
CommandMain cm = new CommandMain();
CommandAdd add = new CommandAdd();
CommandCommit commit = new CommandCommit();
JCommander jc = JCommander.newBuilder()
.addObject(cm)
.addCommand("add", add);
.addCommand("commit", commit);
.build();
jc.parse("-v", "commit", "--amend", "--author=cbeust", "A.java", "B.java");
Assert.assertTrue(cm.verbose);
Assert.assertEquals(jc.getParsedCommand(), "commit");
Assert.assertTrue(commit.amend);
Assert.assertEquals(commit.author, "cbeust");
Assert.assertEquals(commit.files, Arrays.asList("A.java", "B.java"));
17. Exception
Whenever JCommander detects an error, it will throw a ParameterException
. Note that this is a Runtime Exception, since your application is probably not initialized correctly at this point. Also, ParameterException
contains the
JCommander
instance and you can also invoke usage()
on it if you need to display some help.
18. Usage
You can invoke usage()
on the JCommander instance that you used to parse your command line in order to generate a summary of all the options that your program understands:
Usage: <main class> [options]
Options:
-debug Debug mode (default: false)
-groups Comma-separated list of group names to be run
* -log, -verbose Level of verbosity (default: 1)
-long A long number (default: 0)
You can customize the name of your program by calling setProgramName()
on your JCommander object. Options preceded by an asterisk are required.
You can also specify the order in which each option should be displayed when calling usage()
by setting the order
attribute of the @Parameter
annotation:
class Parameters {
@Parameter(names = "--importantOption", order = 0)
private boolean a;
@Parameter(names = "--lessImportantOption", order = 3)
private boolean b;
19. Hiding parameters
If you don’t want certain parameters to appear in the usage, you can mark them as "hidden":
@Parameter(names = "-debug", description = "Debug mode", hidden = true)
private boolean debug = false;
20. Internationalization
You can internationalize the descriptions of your parameters. First you use the @Parameters
annotation at the top of your class to define the name of your message bundle, and then you use the descriptionKey
attribute instead of description on all the @Parameters
that require translations. This descriptionKey
is the key to the string into your message bundle:
@Parameters(resourceBundle = "MessageBundle")
private class ArgsI18N2 {
@Parameter(names = "-host", description = "Host", descriptionKey = "host")
String hostName;
}
Your bundle needs to define this key:
host: Hôte
JCommander will then use the default locale to resolve your descriptions.
21. Parameter delegates
If you are writing many different tools in the same project, you will probably find that most of these tools can share configurations. While you can use inheritance with your objects to avoid repeating this code, the restriction to single inheritance of implementation might limit your flexibility. To address this problem, JCommander supports parameter delegates.
When JCommander encounters an object annotated with @ParameterDelegate
in one of your objects, it acts as if this object had been added as a description object itself:
class Delegate {
@Parameter(names = "-port")
private int port;
}
class MainParams {
@Parameter(names = "-v")
private boolean verbose;
@ParametersDelegate
private Delegate delegate = new Delegate();
}
The example above specifies a delegate parameter Delegate which is then referenced in MainParams. You only need to add a MainParams
object to your
JCommander configuration in order to use the delegate:
MainParams p = new MainParams();
JCommander.newBuilder().addObject(p).build()
.parse("-v", "-port", "1234");
Assert.assertTrue(p.isVerbose);
Assert.assertEquals(p.delegate.port, 1234);
22. Dynamic parameters
JCommander allows you to specify parameters that are not known at compile time, such as "-Da=b -Dc=d". Such parameters are specified with the @DynamicParameter
annotation and must be of type Map<String, String>
. Dynamic parameters are allowed to appear multiple times on the command line:
@DynamicParameter(names = "-D", description = "Dynamic parameters go here")
private Map<String, String> params = new HashMap<>();
You can specify a different assignment string than = by using the attribute assignment.
23. Custom usage formats
JCommander allows you to customize the output of the JCommander#usage()
method.
You can do this by subclassing IUsageFormatter
and then calling JCommander#setUsageFormatter(IUsageFormatter)
.
An example of a usage formatter which only prints the parameter names, separated by new lines is shown below:
class ParameterNamesUsageFormatter implements IUsageFormatter {
// Extend other required methods as seen in DefaultUsageFormatter
// This is the method which does the actual output formatting
public void usage(StringBuilder out, String indent) {
if (commander.getDescriptions() == null) {
commander.createDescriptions();
}
// Create a list of the parameters
List<ParameterDescription> params = Lists.newArrayList();
params.addAll(commander.getFields().values());
// Append all the parameter names
if (params.size() > 0) {
out.append("Options:\n");
for (ParameterDescription pd : params) {
out.append(pd.getNames()).append("\n");
}
}
}
}
24. JCommander in other languages
24.1. Kotlin
class Args {
@Parameter
var targets: List<String> = arrayListOf()
@Parameter(names = arrayOf("-bf", "--buildFile"), description = "The build file")
var buildFile: String? = null
@Parameter(names = arrayOf("--checkVersions"),
description = "Check if there are any newer versions of the dependencies")
var checkVersions = false
}
24.2. Groovy
Courtesy of Paul King:
import com.beust.jcommander.*
class Args {
@Parameter(names = ["-f", "--file"], description = "File to load. Can be specified multiple times.")
List<String> file
}
new Args().with {
JCommander.newBuilder().addObject(it).build().parse(argv)
file.each { println "file: ${new File(it).name}" }
}
25. More examples
26. Mailing list
Join the JCommander Google group if you are interested in discussions about JCommander.
27. Javadocs
The Javadocs for JCommander can be found here.
28. License
JCommander is released under the Apache 2.0 license.
29. Download
You can download JCommander from the following locations:
-
Kobalt
compile("org.jcommander:jcommander:1.83")
-
Gradle
compile "org.jcommander:jcommander:1.83"
-
Maven:
<dependency>
<groupId>org.jcommander</groupId>
<artifactId>jcommander</artifactId>
<version>1.83</version>
</dependency>


|
| class | Ability |
| | An abstract class that represents an ability. More...
|
| |
| class | AbilityCell |
| | Represents a Gui that visualizes and allows mouse interaction with an Ability. More...
|
| |
| class | AngledSprite |
| |
| class | Animation |
| | A QGraphicsItem that represents a series of images that will be shown one after the other at a certain speed ("frames per second"). More...
|
| |
| class | AnimationAttack |
| | A MeleeWeapon that on attack() will cause a specified animation of the owner to be played. More...
|
| |
| class | AsyncShortestPathFinder |
| |
| class | Axe |
| | Represents an Axe. More...
|
| |
| class | Bar |
| | A Gui that represents a progress bar of some sorts. More...
|
| |
| class | BodyThrust |
| | An Ability that causes the using entity to thrust its body forward at its current facing angle and then back. More...
|
| |
| class | Bow |
| |
| class | Button |
| | Represents a button Gui that can be added to a Game. More...
|
| |
| class | CBDamage |
| | A CollisionBehavior that will damage one, both, or none of the colliding entities. More...
|
| |
| class | CHealthShower |
| |
| class | Choice |
| | Represents a choice that can be presented in a DialogGui when a certain response is presented. More...
|
| |
| class | CItemDropper |
| |
| class | CollisionBehavior |
| | An interface for behavior objects that decides what happens when two Entities collide. More...
|
| |
| class | CountExpiringTimer |
| | Represents a timer that will fire a specific number of times and then deletes itself. More...
|
| |
| class | DestReachedBehavior |
| | An object that determines what happens when a Projectile has reached its destination. More...
|
| |
| class | DialogGui |
| | Represents a Gui that can be used to present an interactive dialog. More...
|
| |
| class | DRBDestroyProjectile |
| | A DestReachedBehavior that simply destroys the projectile. More...
|
| |
| class | ECAttacker |
| | An EntityController that makes the controlled entity attack certain other entities within its field of view. More...
|
| |
| class | ECBodyThruster |
| | An entity controller that causes the controlled entity to chase certain other entites in its field of view and use the BodyThrust ability on them when close enough. More...
|
| |
| class | ECCameraFollower |
| | An entity controller that makes the game's camera follow the entity around. More...
|
| |
| class | ECChaser |
| | An entity controller that makes it so the controlled entity will chase certain other entities that enter its field of view. More...
|
| |
| class | ECCurrentMapGrabber |
| | An entity controller (TODO link to doc) that will set the game's current map to always be the map that the controlled entity is in. More...
|
| |
| class | ECFieldOfViewEmitter |
| | An entity controller that checks the field of view of the controlled entity and emits a signal whenever other entities enter or leave the controlled entity's field of view. More...
|
| |
| class | ECGuiShower |
| | An EntityController that will pop up a specified gui when entities of interst come within a specified distance of the controlled entity. More...
|
| |
| class | ECItemPickerUpper |
| | An entity controller that causes the controlled entity to pick up items as he collides with them. More...
|
| |
| class | ECKeyboardMover4Directional |
| | An entity controller (TODO: link to documentation) that moves the entity in 4 directions (up, down, left, and right) in response to the keyboard. More...
|
| |
| class | ECKeyboardMover8Directional |
| | An entity controller (TODO: link to documentation) that moves an Entity relative to the screen in response to keyboard keys. More...
|
| |
| class | ECKeyboardMoverPerspective |
| | An entity controller (TODO: link to doc) that moves an Entity relative to his own facing angle in response to keyboard keys. More...
|
| |
| class | ECMapMover |
| | An entity controller (TODO: add doc link) that makes it such that when the controlled entity touches the border of it's map, it will go to the next map in the MapGrid in that direction. More...
|
| |
| class | ECMerchant |
| | An EntityController that adds merchant-like behavior to an entity. More...
|
| |
| class | ECMouseFacer |
| | An entity controller (TODO: link to doc) that makes an Entity constantly rotate towards the mouse. More...
|
| |
| class | ECMover |
| | A EntityController that can somehow move an Entity from its current position to a specified position. More...
|
| |
| class | ECPathMover |
| | A Mover that moves the Entity in a path finding way. More...
|
| |
| class | ECRotater |
| | An entity controller (TODO: add doc link) that allows you to rotate an entity. More...
|
| |
| class | Edge |
| | Represents an edge between two Nodes. More...
|
| |
| class | Entity |
| | An Entity is the base class for anything that can go inside a Map. More...
|
| |
| class | EntityController |
| | An object that provides some sort of behavior for an Entity (i.e "controls" the Entity in some way). More...
|
| |
| class | EntityCreator |
| | Defines an interface for the capeability to create an entity. More...
|
| |
| class | EntitySprite |
| | Represents the visual aspect of an Entity. More...
|
| |
| class | EntityTargetAbility |
| | An Ability that requires a target Entity to be used on. More...
|
| |
| class | EntityTargetItem |
| | An abstract class that represents an Item that can be used on an Entity. More...
|
| |
| class | EquipableItem |
| | An abstract class that Represents an Item which is equipable. More...
|
| |
| class | FireballLauncher |
| | A RangedWeapon that on attack() will launch a fireball towards the specified position. More...
|
| |
| class | FogWeather |
| | A WeatherEffect that represents fog. More...
|
| |
| class | Game |
| | Represents the game as a whole. More...
|
| |
| class | Graph |
| | Represents a Graph. More...
|
| |
| class | Grid |
| | Represents a region of 2d space that is divided into a grid of cells. More...
|
| |
| class | Gui |
| | Abstract class that Represents a GUI element in a Game. More...
|
| |
| class | Inventory |
| | Represents a collection of Items. More...
|
| |
| class | InventoryUser |
| | A Gui that allows "using" the Items in an Inventory. More...
|
| |
| class | InventoryViewer |
| | Represents a GUI element that visualizes and allows mouse interaction with an Inventory. More...
|
| |
| class | Item |
| | Abstract class that represents any Item (such as HealthPotion, Axe, etc..) that can be in an Inventory or lying around on the Map. More...
|
| |
| class | ItemCell |
| | Represents a Gui that visualizes and allows mouse interaction with an Item. More...
|
| |
| class | ItemGold |
| | An Item of value. More...
|
| |
| class | ItemHealthPotion |
| |
| class | ItemPushback |
| |
| class | ItemRainOfSpears |
| |
| class | ItemShardsOfFire |
| |
| class | ItemTeleport |
| |
| class | Label |
| | Represents a label Gui that can be added to a Game. More...
|
| |
| class | Map |
| | Represents a map which can contain a bunch of interacting Entities. More...
|
| |
| class | MapGrid |
| | Represents a grid of maps. More...
|
| |
| class | MCSpawner |
| | A map controller that will spawn entities randomly within some region of a map. More...
|
| |
| class | MeleeWeapon |
| | An abstract class that represents a melee weapon. More...
|
| |
| class | MeleeWeaponSlot |
| | Represents a Slot that can hold a MeleeWeapon. More...
|
| |
| class | Node |
| | Represents a node. More...
|
| |
| class | NoTargetAbility |
| | An Ability that can simply be used with no target. More...
|
| |
| class | NoTargetItem |
| | Abstract class that represents an Item that does not require any targets to use. More...
|
| |
| class | Panel |
| | Represents a panel GUI element that can be placed in a Game. More...
|
| |
| class | PathGrid |
| | Represents a grid of Nodes, each of which can either be filled or unfilled. More...
|
| |
| class | PathingMap |
| | Represents a rectangular region of space divided into square cells where each cell can either be filled or unfilled. More...
|
| |
| class | PlayingAnimationInfo |
| | Simple class that represents information about a currently playing animation. More...
|
| |
| class | PointTargetAbility |
| |
| class | PointTargetItem |
| | An abstract class that represents an Item that can be used on some location (Point). More...
|
| |
| class | PositionalSound |
| | Represents a sound object you can put in a Map. More...
|
| |
| class | Quest |
| | Represents a quest, which has a name, description, and a current status such as in progress, completed, or failed. More...
|
| |
| class | QuestAcceptor |
| | Represents a Gui that allows you to select/accept quests. More...
|
| |
| class | Quests |
| | Represents a collection of Quests.  More...
|
| |
| class | RainOfSpearsAbility |
| | An Ability that will rain spears around the owner, damaging all enemies of the owner but not the owner himself. More...
|
| |
| class | RainWeather |
| | Class that represents a rain weather effect. More...
|
| |
| class | RandomGenerator |
| | Allows generating random numbers/points. More...
|
| |
| class | RandomImageEntity |
| | An Entity whos displayed image is randomly picked from a set of images in a folder. More...
|
| |
| class | RangedWeapon |
| | Abstract class that represents a weapon that can fire projectiles. More...
|
| |
| class | RangedWeaponSlot |
| |
| class | Response |
| | Represents a response that can be presented in a DialogGui when a certain choice is selected (or when no choice is selected - the default displayed Response). More...
|
| |
| class | ScrollBar |
| | Represents a GUI that has a little dragable bar ( called a "foreground bar") that you can drag from one end to the other on a "background bar". More...
|
| |
| class | ScrollWindow |
| | Represents a Gui that can be used to visualized other Guis in a scroll like fashion. More...
|
| |
| class | ShardsOfFireAbility |
| |
| class | ShopBehaviorNoCost |
| | Allows free buying at Shop. More...
|
| |
| class | ShopGui |
| | A Gui that allows you to transfer Items visually from a "seller" Inventory to a "buyer" Inventory. More...
|
| |
| class | ShopGuiBehavior |
| |
| class | Slot |
| | An abstract class that represents an equipment slot. More...
|
| |
| class | SnowWeather |
| | Class that represents a snow weather effect. More...
|
| |
| class | Sound |
| | Represents a sound that can be played a certain number of times (including an infinite number of times). More...
|
| |
| class | Spear |
| | Represents a spear. More...
|
| |
| class | SpearProjectile |
| | Represents a Projectile that simply goes from the start position towards the target position until it exceeds its range.  More...
|
| |
| class | SpriteSheet |
| | Represents a sprite sheet. More...
|
| |
| class | TerrainLayer |
| | Represents a bunch of auto blended QPixmaps arranged in a grid that can go inside a Map. More...
|
| |
| class | TopDownSprite |
| | Represents top down graphics for an Entity as well. More...
|
| |
| class | Tree |
| | Represents a tree. More...
|
| |
| class | Weapon |
| | An abstract class that represents an EquipableItem that can attack towards a position. More...
|
| |
| class | WeaponSlot |
| |
| class | WeatherEffect |
| | Abstract class that represents a weather effect for a Map. More...
|
| |
| class | Worker |
| |
|
| *** | connect (pathFinder, &AsyncShortestPathFinder::pathFound, yourObject, yourCallback) |
| | Represents an object that can asynchronously find the shortest path between two points. More...
|
| |
| ***pathFinder | findPath (aPathingMap, startPoint, endPoint) |
| |
| bool | operator== (const Edge &lhs, const Edge &rhs) |
| | Returns true if the two edges have the same starting and ending Nodes, regardeless of their weights. More...
|
| |
| bool | operator== (const qge::Node &lhs, const qge::Node &rhs) |
| | Returns true if both Nodes have the same x and y values. More...
|
| |
| bool | operator!= (const qge::Node &lhs, const qge::Node &rhs) |
| | Returns true if the two Nodes do not have the same x and y values. More...
|
| |
| | Q_DECLARE_METATYPE (PathingMap) |
| |
| void | addRandomTrees (Map *mapToAddTreesTo, int numTreesToAdd, const std::string &treeNumber, int numImages) |
| | Adds the specified number of trees randomly scattered on the specified Map. More...
|
| |
| void | addTag (const std::string &tag, std::initializer_list< Entity *> entities) |
| | Adds a tag to all the specified entities. More...
|
| |
| Entity * | getMinitaurEntity () |
| | Convenience function which creates an entity and gives it the built in minitaur sprite. More...
|
| |
| double | frequency (double stepSize, double rate) |
| | Given a step size and a target rate, will tell you the frequency needed to get the target rate. More...
|
| |
| double | secondsToMs (double seconds) |
| | Converts seconds to milliseconds. More...
|
| |
| double | msToSeconds (double milliseconds) |
| | Converts milliseconds to seconds. More...
|
| |
| quint32 | fastRandom () |
| | Generates a random 32 bit number (unsigned). More...
|
| |
| double | closestAngle (const std::vector< int > &allAngles, double targetAngle) |
| | Returns the angle in 'allAngles' that is the closest to the 'targetAngle'. More...
|
| |
| double | randInt (int from, int to) |
| |
| double | randDouble (double from, double to) |
| |


I'm passionate UI/UX Designer and Front-End Developer creating modern and responsive design for Web and Mobile. I believe that learning those powerful languages such as; JavaScript, HTML, CSS, and several other available resources make me feel confident writing code; it challenges me to learn new skills and master it into a new level in order to reach my goals.
To be a developer, you don't need to be a server exper, but you need to understand the basics. There is one thing to remember when we see that awesome looking site. or when you are amazed with funtionalities of a web plugin
The debugging part is what we never see in movies, and can be extremely frustrating. To be a good programer, you need to regularly flex your frustation muscle
I'm glad that I started taking this classes at UC Berkeley Extension because I was studing it on my own, however; it wasnt enought for me to learn other new languages because of the hight level of understanding that required to ask in class a lot of question.


The drag image element for the drag object.
The mime data for the drag object.
The proposed drop action for the drag object.
Get the drag source for the drag object.
The supported drop actions for the drag object.
The internal id for the active cursor override.
Test whether the drag object is disposed.
Add the document event listeners for the drag object.
Attach the drag image element at the specified location.
This is a no-op if there is no drag image element.
Detach the drag image element from the DOM.
This is a no-op if there is no drag image element.
Handle the 'keydown'
event for the drag object.
Handle the 'mousemove'
event for the drag object.
Handle the 'mouseup'
event for the drag object.
Finalize the drag operation and resolve the drag promise.
Move the drag image element to the specified location.
This is a no-op if there is no drag image element.
The scroll loop handler function.
Remove the document event listeners for the drag object.
Set the internal drop action state and update the drag cursor.
Update the current target node using the given mouse event.
Update the drag scroll element under the mouse.
Dispose of the resources held by the drag object.
This will cancel the drag operation if it is active.
Handle the DOM events for the drag operation.
The DOM event sent to the drag object.
This method implements the DOM EventListener
interface and is
called in response to events on the document. It should not be
called directly by user code.
Start the drag operation at the specified client position.
The client X position for the drag start.
The client Y position for the drag start.
A promise which resolves to the result of the drag.
If the drag has already been started, the promise created by the
first call to start
is returned.
If the drag operation has ended, or if the drag object has been
disposed, the returned promise will resolve to 'none'
.
The drag object will be automatically disposed when drag operation
completes. This means Drag
objects are for single-use only.
This method assumes the left mouse button is already held down.
Override the cursor icon for the entire document.
The string representing the cursor style.
A disposable which will clear the override when disposed.
The most recent call to overrideCursor
takes precedence.
Disposing an old override has no effect on the current override.
This utility function is used by the Drag
class to override the
mouse cursor during a drag-drop operation, but it can also be used
by other classes to fix the cursor icon during normal mouse drags.
import { Drag } from '@phosphor/dragdrop';
// Force the cursor to be 'wait' for the entire document.
let override = Drag.overrideCursor('wait');
// Clear the override by disposing the return value.
override.dispose();
Generated using TypeDoc
An object which manages a drag-drop operation. The namespace for the
Drag
class statics.A drag object dispatches four different events to drop targets:
'p-dragenter'
- Dispatched when the mouse enters the target element. This event must be canceled in order to receive any of the other events.'p-dragover'
- Dispatched when the mouse moves over the drop target. It must cancel the event and set thedropAction
to one of the supported actions in order to receive drop events.'p-dragleave'
- Dispatched when the mouse leaves the target element. This includes moving the mouse into child elements.'p-drop'
- Dispatched when the mouse is released over the target element when the target indicates an appropriate drop action. If the event is canceled, the indicated drop action is returned to the initiator through the resolved promise.A drag operation can be terminated at any time by pressing
Escape
or by disposing the drag object.A drag object has the ability to automatically scroll a scrollable element when the mouse is hovered near one of its edges. To enable this, add the
data-p-dragscroll
attribute to any element which the drag object should consider for scrolling.Notes
This class is designed to be used when dragging and dropping custom data within a single application. It is not a replacement for the native drag-drop API. Instead, it provides an API which allows drag operations to be initiated programmatically and enables the transfer of arbitrary non-string objects; features which are not possible with the native drag-drop API.


Guidance
Information for members of the public about the procedures and expected behaviour when attending a teacher misconduct hearing.
Ref: NCTL-20034-2016 PDF , 148KB , 12 pages
For the purposes of this guide, references to ‘teachers’ should be assumed to include ‘instructors’ and interpreted as a person engaged to carry out teaching work, as defined by The Teachers’ Disciplinary (England) Regulations 2012.
This guide is provided for information purposes only. It is not intended to be a statement or interpretation of any law or procedural rule or a substitute for where it is appropriate to obtain independent legal advice.
Published: 1 April 2012
Updated: 27 July 2016
From: National College for Teaching and Leadership
Part of: Teacher misconduct


--- layout: post date: 2012-02-07 time: "09:00:00" authors: ["Greg Wilson"] title: Why We Don't Teach Parallel Computing in Software Carpentry tags: ["Education", "Opinion"] ---
Konrad Hinsen recently wrote a blog post that explains why teaching parallel computing with Python is hard. To make a long story short, Python's multiprocessing module can fail on simple problems in a whole bunch of ways that require fairly advanced understanding to diagnose and repair—and that's even before you try doing things on Windows.


FinishMesh()
Syntax
FinishMesh(Mode)Description
Finish the creation of the current mesh started with CreateMesh().
Parameters
Mode If set to #True, the mesh will be converted to a static mesh and will be not modifiable anymore. If set to #False, the mesh will still be modifiable with UpdateMesh(). Static meshes are faster to render than dynamic meshes.
Return value
None.
See Also
CreateMesh()
Supported OS
All


This is our most secluded and intimate option. Comes complete with a private beach, champagne service and gold plated bathtub for two.
For the ghost enthuiast in your life, the Spooky Suite is the perfect fit. Complete with chilling backstory, cobwebs, creaky bed springs and a healthy bat population. (Rabies vaccination strongly suggested)
For full families looking for company, these four cabins get cozy on our scenic hilltop. Enjoy a complementary kayak rental and community fire pits. Nothing makes a vaction as fun as white water rafting with a new friend.


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Recent Work
Spin
Backend Lead / dockless mobility platform
Rails, React Native, Heroku, AWS, Postgresql, Golang, Redis
As both a React Native expert and Rails veteran, I joined Spin as a consultant to help launch their dockless mobility service.
After their acquisition by Ford, I took on the of building a team to architect, stabilize and scale the Spin platform.
I now manage and guide the team of 12 on best practices, system design, while still working daily on feature spikes and improving code quality. We consistently hit quarterly goals.
"Joshua helped us with our pre-launch app development. He ironed out bugs, refactored the app based on best practices, and got us into shape for launch. We couldn't have done it without him!' - Zaizhuang Cheng, COO @ Spin
Technical achievements:
Developed an improved database architecture, led tech debt refactoring effort on the Rails backend. Brought mean web response time to < 100ms.
Built out a CI/CD pipeline and assisted with migration from Heroku to AWS EKS (Kubernetes).
Worked with Golang engineers to design a scalable message bus for communicating with vehicle. Without having to split the Rails backend into microservices.
Nextjournal
Multiple roles / reproducible computation platform
Worked across the entire product towards the release of a reproducible computational research platform designed for the modern web.
Worked extensively with Docker, including its experimental process save/restore integration.
Setup and wrote modules for Guix to generate reproducible scientific software builds.
Built an autoscaling cluster on Google Cloud, with deployment tools in Bash and Elixir, for scheduling code execution jobs on a GPU-enabled CoreOS servers. Build orchestration and provisioning with the Hashicorp stack: Terraform, Consul, Nomad and Vault.
Supported customers through bug fixes in the backend and ClojureScript frontend.
Wrote homepage copy, blog posts and produced a demo video. Assisted with product strategy.
OpenCity
Rails/React consulting
Rails, React, Postgresql, Convox, AWS
Brought on to rewrite a dying Rails app and migrate it to a stable deployment platform.
Migrated from EC2 instances to Convox.
Rewrote using Rails best practices and implemented a GraphQL API to serve a React frontend. Helped hire a frontend team and guide its usage of GraphQL.
Integrated Ably as a performant replacement for ActionCable to provide realtime services to web and mobile clients.
Prepd: The Lunchbox Reimagined
FREELANCE: React Native
Kick-started cross-platform mobile development in preparation for the launch of the Prepd lunchbox.
Built the app from scratch based on design specs provided by the team at Hanno. Used MobX for state management and Contentful for editing and fetching recipe data. Setup CI for testing and automated beta deployment.
Taught the Hanno team React Native best practices and guided them into the first stage of launch.
tomaflamenco.com
Free online flamenco classes
Videos edited with Final Cut Pro. Site built with Ruby on Rails. Check out the source.
The React Native Playground
OSS community project / React Native, React, Rails
A now-defunct community tool for testing and sharing React Native code in the browser or on a device.
Now retired and superseded by Snack by the team at Expo.
Check out the web and app source. See a screenshot of the original site.
Noodler: The Noodle Soup Oracle
Objective-C, React Native
Dinner inspiration in a beautifully illustrated mobile app.
One of the first React Native apps in the app store. Illustrated and conceived in NYC by Michele Humes.
Rubytune: Rails performance tuning
Co-founded consultancy: Rails, DevOps
Helped clients tune, debug or repair their Rails app deployments in critical situations.
Tracked troublesome PostgreSQL and MySQL queries, and tuned database configuration for optimal performance.
Built reports on best practices and practical paths towards faster application performance.
Meet Chef: An introductory DevOps course
Online course content development
Produced content for a PluralSight video course on Chef, a server configuration management tool.
Previously...
Worked as a senior devops engineer at Basecamp, the creators of Ruby on Rails, from 2008-2010. Dug deep in the guts of early Rails apps, and built some of the earliest Chef recipes published on Github.
Developed PHP and pre-Rails Ruby web applications for the Andalucian employment office.
Managed a team of ex-hacker security experts now known as IBM X-Force, to identify and report security vulnerabilities in commercial software.
Learned UNIX system administration on an SGI Indy workstation in NYC, circa 1996!


Welcome to KViK
Kaushalya Vikas Kendra (KViK) is a centre for skill development. Its prime objective is to make semi-literate youth from poor economic and social background 'employable' and to provide skilled manpower to the industries of high growth. KViK is a company set up to provide vocational training in variety of trades which are in great demand in the industry today. KViK has been set up by experienced and successful executives of companies who would like to give something back to the society.
Meet the needs of the growing Indian economy for skilled personnel.
India's economy is growing at a fast pace. This growth is improving the income level of the people and ushering in prosperity. However, the growth is hampered due to shortage of skilled manpower in all growing industries. The efficiency and quality of work is suffering for want of skilled personnel in various trades.
These skills can be imparted by vocational training to boys and girls with school education. The training needs to be job oriented with high element of on-the-job experience and soft skills. KViK’s vision is to impart such training and bridge the gap between demand and supply for skilled Human Resource in the emerging industries.
Upliftment of people from economically and socially weaker sections of the society by making them ‘employable’.
KViK has been incorporated as a Private Limited Company under section 25 of the Companies Act. Therefore, it is a “not-for-profit” organisation with the sole aim of upliftment of people from economically and socially weaker sections of the society by making them ‘employable’. The courses selected by KViK can be learnt by a student with the basic school education.
However, desire to learn, work hard and aptitude to follow discipline and self-development are necessary for a trainee to get placement and do well in a job. KViK’s curriculum provides for developing soft skills, including ‘spoken English’, which is so essential in today’s cosmopolitan nature of life in cities.
KViK's mission is to provide vocational training in trades which are in demand. It aims to extend its reach to towns and villages where large number of young people desirous of making a decent living needs to be skilled to secure employment in the industry and commerce. KViK provides short term (3 to 6 months) training for boys and girls as per government curriculum and fee structure in following skills:
Electrical repair, maintenance & repair of computers, electronic equipment repair and office assistant with TALLY, Plumbing and Carpentry and Tailoring. It has plans to introduce more skills based on the needs of the industry and availability of students. In addition, KViK runs special courses for the following stakeholders:
Eureka Forbes for technicians to install and maintain Water Purifiers.
Vidya, an NGO in education for poor, summer courses in variety of skills to make them employable.
KViK’s mission is to make employable young boys and girls in rural areas by training them skills which are needed in villages and towns, such as repair of computers/smart phones, repair of irrigation pump sets, installation of solar systems, wood working for buildings, furniture making, garment making, and so on. It’s focus will be on skills which can used to become a ‘self-entrepreneur’.
A dormitory is being set up near the KViK training centre in Weavers Colony in South Bengaluru to house students from far away villages. The training for these students will be ‘full time’ and will be completed in 2 months.
High quality training at reasonable cost is the corner stone on which KViK has built its credibility and reputation.
The KViK logo indicates the focus on 'hand skills' and what a highly skilled person can produce.  The curriculum of KViK is based on German “Dual training” model which emphasizes class room teaching and on-the-job training in equal measure. Emphasis is on technical skills as well as soft skills like work culture, adherence to standards, safety and discipline. The courses offered by KViK are affordable to students from economically weaker sections. The cost of the high quality training is met mainly by fees, placement fee and donations. The revenue model is designed to sustain and expand the training facilities in a steady manner.
The DGET has recognised KViK as a Vocational Training Provider (VTP) after a rigorous process of scrutiny and validation of its infrastructure, faculty and other resources. Under the Skill Development Incentive scheme, test of students and issuing of certificates after completion of curriculum and training is done by assessing bodies appointed by DGETs. Tailoring course is based on agreement with USHA International with special curriculum, duration and fee structure.
Kaushalya Vikas Kendra, as the name suggests believes that every person has the basic talent. It provides opportunity for the talent to develop in to an employable skill.
The KViK courses run on part time basis to allow poor students to earn some money by odd jobs. The class duration is 2 to 3 hours per day. Training in some skills is done in multiple batches during the day in order to utilise resources optimally. The duration of the courses vary from 3 to 6 months.


|
PU2CLR Si4735 Arduino Library 2.1.4
Arduino Library for Si47XX Devices - By Ricardo Lima Caratti
|
Functions | |
| void | SI4735::clearRdsBuffer2A () |
| Clear RDS buffer 2A (Radio Text / Program Information) | |
| void | SI4735::clearRdsProgramInformation () |
| Clear RDS buffer 2A (Radio Text / Program Information) | |
| void | SI4735::clearRdsBuffer2B () |
| Clear RDS buffer 2B (text / Station INformation 32 bytes) | |
| void | SI4735::clearRdsStationInformation () |
| Clear RDS buffer 2B (text / Station INformation 32 bytes) | |
| void | SI4735::clearRdsBuffer0A () |
| Clear RDS buffer 0A (text / Station Name) | |
| void | SI4735::clearRdsStationName () |
| Clear RDS buffer 0A (text / Station Name) | |
| void | SI4735::clearRdsBuffer () |
| Starts the control member variables for RDS. It is an alias to RdsInit (a better name to RdsInit) | |
| void | SI4735::rdsBeginQuery () |
| Retrieves the current RDS data to be utilized by other RDS functions. | |
| bool | SI4735::getRdsReceived () |
| Get the Rds Received FIFO. | |
| bool | SI4735::getRdsSyncLost () |
| Get the Rds Sync Lost object. | |
| bool | SI4735::getRdsSyncFound () |
| Get the Rds Sync Found. | |
| bool | SI4735::getRdsNewBlockA () |
| Get the Rds New Block A. | |
| bool | SI4735::getRdsNewBlockB () |
| Get the Rds New Block B. | |
| bool | SI4735::getRdsSync () |
| Get the Rds Sync. | |
| bool | SI4735::getGroupLost () |
| Get the Group Lost. | |
| uint8_t | SI4735::getNumRdsFifoUsed () |
| Get the Num Rds Fifo Used. | |
| void | SI4735::setFifoCount (uint16_t value) |
| Sets the minimum number of RDS groups stored in the RDS FIFO before RDSRECV is set. | |
| bool | SI4735::getEndIndicatorGroupA () |
| Check if 0xD or 0xA special characters were received for group A. | |
| void | SI4735::resetEndIndicatorGroupA () |
| Resets 0xD or 0xA special characters condition (makes it false) | |
| bool | SI4735::getEndIndicatorGroupB () |
| Check if 0xD or 0xA special characters were received for group B. | |
| void | SI4735::resetEndIndicatorGroupB () |
| Resets 0xD or 0xA special characters condition (makes it false) | |
| void | SI4735::getRdsStatus () |
| Gets RDS Status. | |
| void | SI4735::rdsClearFifo () |
| Empty FIFO. | |
| void | SI4735::rdsClearInterrupt () |
| Clears RDSINT. | |
| char * | SI4735::getRdsStationName (void) |
| Gets the Station Name. | |
| char * | SI4735::getRdsProgramInformation (void) |
| Gets the Program Information (RT - Radio Text) | |
| char * | SI4735::getRdsStationInformation (void) |
| Gets the Station Information. | |
| void | SI4735::RdsInit () |
| Starts the control member variables for RDS. | |
| void | SI4735::setRdsConfig (uint8_t RDSEN, uint8_t BLETHA, uint8_t BLETHB, uint8_t BLETHC, uint8_t BLETHD) |
| Sets RDS property. | |
| void | SI4735::setRdsIntSource (uint8_t RDSRECV, uint8_t RDSSYNCLOST, uint8_t RDSSYNCFOUND, uint8_t RDSNEWBLOCKA, uint8_t RDSNEWBLOCKB) |
| Configures interrupt related to RDS. | |
| void | SI4735::getRdsStatus (uint8_t INTACK, uint8_t MTFIFO, uint8_t STATUSONLY) |
| Gets the RDS status. Store the status in currentRdsStatus member. RDS COMMAND FM_RDS_STATUS. | |
| uint16_t | SI4735::getRdsPI (void) |
| Returns the programa type. | |
| uint8_t | SI4735::getRdsGroupType (void) |
| Returns the Group Type (extracted from the Block B) | |
| uint8_t | SI4735::getRdsFlagAB (void) |
| Returns the current Text Flag A/B | |
| uint8_t | SI4735::getRdsTextSegmentAddress (void) |
| Returns the address of the text segment. | |
| uint8_t | SI4735::getRdsVersionCode (void) |
| Gets the version code (extracted from the Block B) | |
| uint8_t | SI4735::getRdsProgramType (void) |
| Returns the Program Type (extracted from the Block B) | |
| void | SI4735::getNext2Block (char *) |
| Process data received from group 2B. | |
| void | SI4735::getNext4Block (char *) |
| Process data received from group 2A. | |
| char * | SI4735::getRdsText (void) |
| Gets the RDS Text when the message is of the Group Type 2 version A. | |
| char * | SI4735::getRdsText0A (void) |
| Gets the station name and other messages. | |
| char * | SI4735::getRdsText2A (void) |
| Gets the Text processed for the 2A group. | |
| char * | SI4735::getRdsText2B (void) |
| Gets the Text processed for the 2B group. | |
| bool | SI4735::getRdsAllData (char **stationName, char **stationInformation, char **programInformation, char **utcTime) |
| Gets Station Name, Station Information, Program Information and utcTime. | |
| char * | SI4735::getRdsTime (void) |
| Gets the RDS time and date when the Group type is 4. | |
| void | SI4735::mjdConverter (uint32_t mjd, uint32_t *year, uint32_t *month, uint32_t *day) |
| Converts the MJD number to integers Year, month and day. | |
| bool | SI4735::getRdsDateTime (uint16_t *year, uint16_t *month, uint16_t *day, uint16_t *hour, uint16_t *minute) |
| Decodes the RDS time to LOCAL Julian Day and time. | |
| char * | SI4735::getRdsDateTime (void) |
| Gets the RDS the Time and Date when the Group type is 4. | |
|
inlineprotected |
Clear RDS buffer 2A (Radio Text / Program Information)
same clearRdsProgramInformation
References SI4735::rds_buffer2A.
Referenced by SI4735::getRdsStatus(), and SI4735::RdsInit().
|
inlineprotected |
Clear RDS buffer 2A (Radio Text / Program Information)
same clearRdsBuffer2A
References SI4735::rds_buffer2A.
|
inlineprotected |
Clear RDS buffer 2B (text / Station INformation 32 bytes)
Same clearRdsStationInformation
References SI4735::rds_buffer2B.
Referenced by SI4735::getRdsStatus(), and SI4735::RdsInit().
|
inlineprotected |
Clear RDS buffer 2B (text / Station INformation 32 bytes)
Same clearRdsBuffer2B
References SI4735::rds_buffer2B.
|
inlineprotected |
Clear RDS buffer 0A (text / Station Name)
clearRdsStationName
References SI4735::rds_buffer0A.
Referenced by SI4735::getRdsStatus(), SI4735::getRdsText0A(), and SI4735::RdsInit().
|
inlineprotected |
|
inline |
Starts the control member variables for RDS. It is an alias to RdsInit (a better name to RdsInit)
This method is called by setRdsConfig()
References SI4735::RdsInit().
|
inline |
Retrieves the current RDS data to be utilized by other RDS functions.
Just another way to call getRdsStatus. Both do the same thing.
This function must be called before calling any RDS function.
References SI4735::getRdsStatus().
Referenced by SI4735::getRdsAllData().
|
inline |
Get the Rds Received FIFO.
if FIFO is 1, it means the minimum number of groups was filled
Referenced by SI4735::getRdsAllData(), SI4735::getRdsPI(), SI4735::getRdsText0A(), and SI4735::getRdsText2A().
|
inline |
Get the Rds Sync Lost object.
returns true (1) if Lost RDS synchronization is detected.
|
inline |
Get the Rds Sync Found.
return true if found RDS synchronization
|
inline |
Get the Rds New Block A.
Returns true if valid Block A data has been received.
Referenced by SI4735::getRdsPI().
|
inline |
Get the Rds New Block B.
Returns true if valid Block B data has been received.
|
inline |
Get the Rds Sync.
Returns true if RDS currently synchronized.
Referenced by SI4735::getRdsAllData().
|
inline |
Get the Group Lost.
Returns true if one or more RDS groups discarded due to FIFO overrun.
|
inline |
Get the Num Rds Fifo Used.
Return the number of RDS FIFO used
|
inline |
Sets the minimum number of RDS groups stored in the RDS FIFO before RDSRECV is set.
Return the number of RDS FIFO used
| value | from 0 to 25. Default value is 0. |
|
inline |
Check if 0xD or 0xA special characters were received for group A.
References SI4735::rdsEndGroupA.
|
inline |
Resets 0xD or 0xA special characters condition (makes it false)
References SI4735::rdsEndGroupA.
|
inline |
Check if 0xD or 0xA special characters were received for group B.
References SI4735::rdsEndGroupB.
|
inline |
Resets 0xD or 0xA special characters condition (makes it false)
References SI4735::rdsEndGroupB.
|
inline |
Gets RDS Status.
Same result of calling getRdsStatus(0,0,0).
Please, call getRdsStatus(uint8_t INTACK, uint8_t MTFIFO, uint8_t STATUSONLY) instead getRdsStatus() if you want other behaviour.
References SI4735::getRdsStatus().
Referenced by SI4735::getRdsStatus(), SI4735::rdsBeginQuery(), SI4735::rdsClearFifo(), and SI4735::rdsClearInterrupt().
|
inline |
|
inline |
Clears RDSINT.
INTACK Interrupt Acknowledge; 0 = RDSINT status preserved. 1 = Clears RDSINT.
References SI4735::getRdsStatus().
|
inline |
Gets the Station Name.
Alias for getRdsText0A
ATTENTION: You must call getRdsReady before calling this function.
References SI4735::getRdsText0A().
|
inline |
Gets the Program Information (RT - Radio Text)
Process the program information data. Same getRdsText2A(). It is a alias for getRdsText2A.
ATTENTION: You must call getRdsReady before calling this function.
References SI4735::getRdsText2A().
|
inline |
Gets the Station Information.
ATTENTION: You must call getRdsReady before calling this function.
References SI4735::getRdsText2B().
| void SI4735::RdsInit | ( | ) |
Starts the control member variables for RDS.
RDS implementation
This method is called by setRdsConfig()
References SI4735::clearRdsBuffer0A(), SI4735::clearRdsBuffer2A(), and SI4735::clearRdsBuffer2B().
Referenced by SI4735::clearRdsBuffer(), and SI4735::setRdsConfig().
| void SI4735::setRdsConfig | ( | uint8_t | RDSEN, |
| uint8_t | BLETHA, | ||
| uint8_t | BLETHB, | ||
| uint8_t | BLETHC, | ||
| uint8_t | BLETHD | ||
| ) |
Sets RDS property.
Configures RDS settings to enable RDS processing (RDSEN) and set RDS block error thresholds.
When a RDS Group is received, all block errors must be less than or equal the associated block error threshold for the group to be stored in the RDS FIFO.
IMPORTANT: All block errors must be less than or equal the associated block error threshold for the group to be stored in the RDS FIFO.
| Value | Description |
|---|---|
| 0 | No errors |
| 1 | 1–2 bit errors detected and corrected |
| 2 | 3–5 bit errors detected and corrected |
| 3 | Uncorrectable |
Recommended Block Error Threshold options:
| Exemples | Description |
|---|---|
| 2,2,2,2 | No group stored if any errors are uncorrected |
| 3,3,3,3 | Group stored regardless of errors |
| 0,0,0,0 | No group stored containing corrected or uncorrected errors |
| 3,2,3,3 | Group stored with corrected errors on B, regardless of errors on A, C, or D |
| uint8_t | RDSEN RDS Processing Enable; 1 = RDS processing enabled. |
| uint8_t | BLETHA Block Error Threshold BLOCKA. |
| uint8_t | BLETHB Block Error Threshold BLOCKB. |
| uint8_t | BLETHC Block Error Threshold BLOCKC. |
| uint8_t | BLETHD Block Error Threshold BLOCKD. |
References SI4735::RdsInit(), and SI4735::waitToSend().
| void SI4735::setRdsIntSource | ( | uint8_t | RDSRECV, |
| uint8_t | RDSSYNCLOST, | ||
| uint8_t | RDSSYNCFOUND, | ||
| uint8_t | RDSNEWBLOCKA, | ||
| uint8_t | RDSNEWBLOCKB | ||
| ) |
Configures interrupt related to RDS.
Use this method if want to use interrupt
| RDSRECV | If set, generate RDSINT when RDS FIFO has at least FM_RDS_INT_FIFO_COUNT entries. |
| RDSSYNCLOST | If set, generate RDSINT when RDS loses synchronization. |
| RDSSYNCFOUND | set, generate RDSINT when RDS gains synchronization. |
| RDSNEWBLOCKA | If set, generate an interrupt when Block A data is found or subsequently changed |
| RDSNEWBLOCKB | If set, generate an interrupt when Block B data is found or subsequently changed |
References SI4735::waitToSend().
| void SI4735::getRdsStatus | ( | uint8_t | INTACK, |
| uint8_t | MTFIFO, | ||
| uint8_t | STATUSONLY | ||
| ) |
Gets the RDS status. Store the status in currentRdsStatus member. RDS COMMAND FM_RDS_STATUS.
| INTACK | Interrupt Acknowledge; 0 = RDSINT status preserved. 1 = Clears RDSINT. |
| MTFIFO | 0 = If FIFO not empty, read and remove oldest FIFO entry; 1 = Clear RDS Receive FIFO. |
| STATUSONLY | Determines if data should be removed from the RDS FIFO. 0 = Data in BLOCKA, BLOCKB, BLOCKC, BLOCKD, and BLE contain the oldest data in the RDS FIFO. 1 = Data in BLOCKA will contain the last valid block A data received for the cur- rent station. Data in BLOCKB will contain the last valid block B data received for the current station. Data in BLE will describe the bit errors for the data in BLOCKA and BLOCKB. |
References SI4735::clearRdsBuffer0A(), SI4735::clearRdsBuffer2A(), SI4735::clearRdsBuffer2B(), and SI4735::waitToSend().
| uint16_t SI4735::getRdsPI | ( | void | ) |
Returns the programa type.
Read the Block A content
References SI4735::getRdsNewBlockA(), and SI4735::getRdsReceived().
| uint8_t SI4735::getRdsGroupType | ( | void | ) |
Returns the Group Type (extracted from the Block B)
| uint8_t SI4735::getRdsFlagAB | ( | void | ) |
Returns the current Text Flag A/B
| uint8_t SI4735::getRdsTextSegmentAddress | ( | void | ) |
Returns the address of the text segment.
2A - Each text segment in version 2A groups consists of four characters. A messages of this group can be have up to 64 characters.
2B - In version 2B groups, each text segment consists of only two characters. When the current RDS status is using this version, the maximum message length will be 32 characters.
| uint8_t SI4735::getRdsVersionCode | ( | void | ) |
Gets the version code (extracted from the Block B)
| uint8_t SI4735::getRdsProgramType | ( | void | ) |
Returns the Program Type (extracted from the Block B)
| void SI4735::getNext2Block | ( | char * | c | ) |
Process data received from group 2B.
| c | char array reference to the "group 2B" text |
Referenced by SI4735::getRdsText0A(), and SI4735::getRdsText2B().
| void SI4735::getNext4Block | ( | char * | c | ) |
Process data received from group 2A.
| c | char array reference to the "group 2A" text |
Referenced by SI4735::getRdsText(), and SI4735::getRdsText2A().
| char * SI4735::getRdsText | ( | void | ) |
Gets the RDS Text when the message is of the Group Type 2 version A.
References SI4735::getNext4Block(), SI4735::rds_buffer2A, and SI4735::rdsTextAdress2A.
| char * SI4735::getRdsText0A | ( | void | ) |
Gets the station name and other messages.
References SI4735::clearRdsBuffer0A(), SI4735::getNext2Block(), SI4735::getRdsReceived(), SI4735::rds_buffer0A, and SI4735::rdsTextAdress0A.
Referenced by SI4735::getRdsAllData(), and SI4735::getRdsStationName().
| char * SI4735::getRdsText2A | ( | void | ) |
Gets the Text processed for the 2A group.
References SI4735::getNext4Block(), SI4735::getRdsReceived(), SI4735::rds_buffer2A, and SI4735::rdsTextAdress2A.
Referenced by SI4735::getRdsAllData(), and SI4735::getRdsProgramInformation().
| char * SI4735::getRdsText2B | ( | void | ) |
Gets the Text processed for the 2B group.
References SI4735::getNext2Block(), SI4735::rds_buffer2B, and SI4735::rdsTextAdress2B.
Referenced by SI4735::getRdsAllData(), and SI4735::getRdsStationInformation().
| bool SI4735::getRdsAllData | ( | char ** | stationName, |
| char ** | stationInformation, | ||
| char ** | programInformation, | ||
| char ** | utcTime | ||
| ) |
Gets Station Name, Station Information, Program Information and utcTime.
This function populates four char pointer variable parameters with Station Name, Station Information, Programa Information and UTC time.
You must call setRDS(true), setRdsFifo(true) before calling getRdsAllData(...)
ATTENTION: You don't need to call any additional function to obtain the RDS information; simply follow the steps outlined below.
ATTENTION: If no data is found for the given parameter, it is assigned a NULL value. Prior to using the pointers variable, make sure to check if it is null.
the right way to call this function is shown below.
ATTENTION: the parameters below are point to point to array of char.
| stationName | (reference) - if NOT NULL, point to Name of the Station (char array - 9 bytes) |
| stationInformation | (reference) - if NOT NULL, point to Station information (char array - 33 bytes) |
| programInformation | (reference) - if NOT NULL, point to program information (char array - 65 nytes) |
| utcTime | (reference) - if NOT NULL, point to char array containing the current UTC time (format HH:MM:SS +HH:MM) |
References SI4735::getRdsReceived(), SI4735::getRdsSync(), SI4735::getRdsText0A(), SI4735::getRdsText2A(), SI4735::getRdsText2B(), SI4735::getRdsTime(), and SI4735::rdsBeginQuery().
| char * SI4735::getRdsTime | ( | void | ) |
Gets the RDS time and date when the Group type is 4.
Returns theUTC Time and offset (to convert it to local time)
return examples:
12:31 +03:00
21:59 -02:30
References SI4735::rds_time.
Referenced by SI4735::getRdsAllData().
| void SI4735::mjdConverter | ( | uint32_t | mjd, |
| uint32_t * | year, | ||
| uint32_t * | month, | ||
| uint32_t * | day | ||
| ) |
Converts the MJD number to integers Year, month and day.
()
Calculates day, month and year based on MJD
This MJD algorithm is an adaptation of the javascript code found at http://www.csgnetwork.com/julianmodifdateconv.html
| mjd | mjd number |
| year | year variable reference |
| month | month variable reference |
| day | day variable reference |
| bool SI4735::getRdsDateTime | ( | uint16_t * | rYear, |
| uint16_t * | rMonth, | ||
| uint16_t * | rDay, | ||
| uint16_t * | rHour, | ||
| uint16_t * | rMinute | ||
| ) |
Decodes the RDS time to LOCAL Julian Day and time.
This method gets the RDS date time massage and converts it from MJD to JD and UTC time to local time
The Date and Time service may not work correctly depending on the FM station that provides the service.
I have noticed that some FM stations do not use the service properly in my location.
Example:
| rYear | year variable reference |
| rMonth | month variable reference |
| rDay | day variable reference |
| rHour | local hour variable reference |
| rMinute | local minute variable reference |
| char * SI4735::getRdsDateTime | ( | void | ) |
Gets the RDS the Time and Date when the Group type is 4.
Returns the Date, UTC Time and offset (to convert it to local time)
return examples:
2021-07-29 12:31 +03:00
1964-05-09 21:59 -02:30
References SI4735::rds_time.


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1 houre ago
520
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30-02-2021
Lorem Ipsum is simply
#It is a long established
1 houre ago
520
58
11:05
30-02-2021
Lorem Ipsum is simply
#It is a long established
1 houre ago
520
58
11:05
30-02-2021
Lorem Ipsum is simply
#It is a long established
1 houre ago
520
58
11:05
30-02-2021
Lorem Ipsum is simply
#It is a long established
1 houre ago
520
58
11:05
30-02-2021
Lorem Ipsum is simply
#It is a long established
1 houre ago
520
58
11:05
30-02-2021


The census is taken every ten years, the growth of Vermont since the first census in 1791 is pronounced and the changes first in the south, then across the state and finally a rapid rise of Chittenden county is clear.
When viewed as a line the trends become much more obcious. In 1940 Chittenden County starts to grow in leaps and bounds over the rest of the state. Type in the year below to see the population, the census is every 10 years so 1790, 1800, 1810, etc.
Like most states, understanding how Vermont is aging had a direct impact on policy and public service operation. Here we can see seperation in gender and count of population in the ages above 65.


Putin: we hope Trump visits Russia for Victory Day in May
BRASILIA (Reuters) - Russian President Vladimir Putin said on Thursday he hoped his U.S. counterpart Donald Trump would come to Russia to mark Victory Day on May 9 next year and that Moscow was ready for talks with Washington.
Putin said it would be the “right” thing for Trump to attend a commemorative event in Moscow to mark the 75th anniversary of victory in World War Two, even as the U.S. president is campaigning for re-election.
Putin presides over an annual parade on May 9 to commemorate the Soviet Union’s victory over Nazi Germany and uses the occasion to show off the country’s military hardware.
Trump said last week he was considering attending the commemorative events after receiving an invitation from the Kremlin.
Russia’s relations with the United States are at post-Cold War lows, but Trump and Putin have maintained the semblance of a good relationship.
“Even in the framework of the election campaign it would be the right (thing). But it’s not up to us to decide,” Putin said, when asked about Trump’s possible attendance.


Took the challenge of converting a design into a website using html css. Made few sites from this challenge.
A webpage with my 25days of Pure CSS challenge with 25 different Pure CSS Components.
Designed a Webpage with all freeCodeCamp Responsive projects and earned a certificate.
I have designed a Website on a very popular show on Netflix - "Stranger Things" using Sass.


Apps¶
Finally, we get to the subject of creating your own Apps inside of the FloatingTools Dashboard. The awesome thing about this is the capability to write UIs and networking tools easily and efficiently with as little code as possible.
UI’s that last¶
Industries using FloatingTools are usually heavily dependant on custom UI tools. These tools are usually dependant on libraries that are tethered to the application you are developing in. At the time this is being written, we are all ready starting to see the transition from a popular library, PySide, to now PySide2. This is requiring studios to write wrappers and make a number of work around’s just to try to salvage as much work as possible.
FT Apps are removed from this issue because all of the UI is managed and generated in HTML, which lasts much longer and is less likely to change anytime soon in a major way. We also can use browsers that are natively cross-platform which in turn lowers the risk of dependency issues. The down side is you are a little more limited with how interactive your UIs can be. But in the case of what you will probably be wanting to do in your App, you wont need too much UI interaction.
- Immediate benefits:
- Networking on your LAN is built-in
- Directly linked to your currently running application
- Cross-platform UI
- Your App can be accessed by other devices like tablets, phones, etc.
- Powered by Twitter Bootstrap
- Security:
- Your Dashboard host is NOT broadcast to the web. It is only accessible by your LAN
- Requests to Dashboard are directly handed to a handler that YOU write. You have full control of the data you share.
Concepts¶
The key to understand is integration. Because Dashboard acts similarly to a peer to peer system, you can afford to do more with your integration. For example; in many project management systems, you get an email with a note of something that needs to be done. The way you get this note is usually via email, checking the software’s homepage or in some cases they have integrated UI’s right in the application the work is being done in. This is all great, but what if we want a user to be able to simply click the thing that is broke in application A and send the issue through FT directly to the upstream user in application B and it will not only tell them the problem, but open up the source of the problem in application B. This is all possible using the power of Dashboard, Application Wrappers and Apps.
Dashboard.ui¶
All of these are html wrapped in python so you dont need to create html files. The html syntax is handled by the Element base class.
-
class
FloatingTools.Dashboard.ui.
Element
(tag, value=None, attributes=None, **kwargs)[source]¶ Base element for all python->html elements. Each Element has a tag, attributes that can be set, and value.
<”tag” “attributes”>”value”</”tag”>
-
addFlag
(flag)[source]¶ Add a flag to this element. This could be like setting an option to selected.
Parameters: flag – str
-
-
class
FloatingTools.Dashboard.ui.
Img
(src, **kwargs)[source]¶ Python equivalent to ul/ol lists in html.
-
class
FloatingTools.Dashboard.ui.
Row
[source]¶
-
class
FloatingTools.Dashboard.ui.
Panel
(type='panel-default', collapsible=False, collapseShown=False)[source]¶ Panels have a header, body, and footer. Python equivalent to bootstrap panels.
Add an element to the footer portion of the panel
Parameters: value – Element or str Returns: value
-
addToHeader
(value)[source]¶ Add an element to the header portion of the panel
Parameters: value – Element or str Returns: value
-
class
FloatingTools.Dashboard.ui.
List
(numbered=False, bootstrap=True)[source]¶ Python equivalent to ul/ol lists in html.
-
class
FloatingTools.Dashboard.ui.
Div
(value=None, **kwargs)[source]¶ Python equivalent to div in html.
-
class
FloatingTools.Dashboard.ui.
Select
(name, **kwargs)[source]¶ Python equivalent to select in html.
-
class
FloatingTools.Dashboard.ui.
Collapse
(id, shown=False, **kwargs)[source]¶ Python equivalent to collapse in html.
App¶
-
class
FloatingTools.
App
(name)[source]¶ Apps are written to interact directly with FloatingTools through the Dashboard web interface.
You must register your app by instantiating an instance of it. This instance is the object Dashboard will handle. The name of your app will be shown in the app list in Dashboard.
1 2 3 4 5 6
import FloatingTools class MyApp(FloatingTools.App): pass MyApp('MyApp')
UIs must be built in the App.BuildUI function via redefine. Doing this in the __init__ will not work unless the UI is static.
1 2 3 4 5
import FloatingTools class MyApp(FloatingTools.App): def buildUI(self): ui code here...
-
connectToElement
(element, function, flag='onclick', **kwargs)[source]¶ Connect an element through a passed flag to a callable.
Parameters: - element – FloatingTools.Dashboard.Element
- function – callable
- flag – str this should be a type of signal like ‘onclick’
-
connectToFunction
(function, **kwargs)[source]¶ This will create a function with pre-baked arguments in the url. Very useful for passing variables.
1 2 3 4 5 6 7 8
import FloatingTools class MyApp(FloatingTools.App): def buildUI(self): FloatingTools.Link('print the "var" variable', self.connectToFunction(self.printFunction, var='foo')) def printFunction(self): print self.arguments()['var']
Parameters: - function –
- kwargs –
-
page
()[source]¶ Get the page object that represents the Dashboard.Page associated with the application.
-
passVariables
(**kwargs)[source]¶ In order to pass variables to a function that gets called through a URL, you must use this function.
1 2 3 4 5 6 7 8
import FloatingTools class MyApp(FloatingTools.App): def buildUI(self): FloatingTools.Link('print the "var" variable', '/url/printFunction' + self.passVariables(var='foo')) def printFunction(self): print self.arguments()['var']
Parameters: **kwargs – dict
-


Senior Information Assurance Security Specialist
We are looking for an Information Assurance Security Specialist whom can work with a team to secure the Navy Expeditionary Combat Command (NECC) network and systems at the Expeditionary Service Support Centers (ESSC) located in Construction Battalion Centers Port Hueneme, CA. Prior Military Tactical Telecommunications experience is desirable.
Responsibilities:
Assists in developing and maintaining knowledge base on changing IA policies, threat, and technology landscapes to continually maintain security NECC networks and systems throughout the organization.
- Experience with Nessus cyber/network scanning software or similar software
- Travel may occur 1 - 2 times a year to Hawaii, Japan or Guam
Skills:
- Host-based Security Software
- Understand network/systems design with Security Design built in
- Configuring and monitoring network attached security appliances and products to include Firewalls and other IDS/IPS products on a large enterprise network.
- Comply with enterprise information assurance and security standards.
- Implement information assurance/security standards and procedures.
- Identifies, reports, and resolves security violations.
- Establishes and satisfies information assurance and security requirements based upon the analysis of user, policy, regulatory, and resource demands.
- Performs analysis, design, and development of security features for system architectures.
- Implements solutions that meet security requirements.
- Provides integration and implementation of the computer system security solutions.
- Performs vulnerability/risk analyses of NECC network, computers and applications
- Experience with applying DISA STIGs
- 3+ years of experience with IT, including at least one of the following areas: vulnerability scanning, such as the use of ACAS and VRAM, HBSS, boundary security, network security, and DNS
Preferred Requirements:
- 3 years’ experience
- Prior Military Tactical Telecommunications or System Administration experience is desirable.
Mandatory Requirements:
- U.S. citizenship certifications.
- Active TOP SECRET or SECRET security clearance.
- CompTIA Security+ CE or the equivalent 8570 certifications
Ka’ala Systems Technology Corp. is committed to hiring and retaining a diverse workforce.  For our complete EEO/AA. U.S. Citizenship is required for this position.


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