June UDPL Night Match Information –
The June 27, 2009 UDPL
Night Match will be a Handgun/IDPA match. We will shoot 6 defensive stages with 80
rounds minimum required.
Schedule:
- 2:00
p.m. - Set Up
- 7:00
p.m. - Sign In and casual steel shooting ‘till 8:40
- 9:00
p.m. - Shooters Meeting
- 9:30
p.m. - Hammer Down
Requirements:
- No new shooters. Please
attend one daytime UDPL match before the night match. The final
UDPL match to be held before the Night Match is the 3-Gun Match on 6/20. If
you think you deserve a special exemption, contact Steve Koski at least
two days before the match at<EMAIL_ADDRESS>- A hand
held flashlight is required for the match.
You can share one with a buddy.
Nearly any hand held light will work. It doesn’t have to be tacti-cool.
- If you
have an LED head lamp or a less intense “non-tactical” flashlight, please
bring it too. It will help with
scoring and taping.
- We
will have two “nightstand start” stages where you can use any gun mounted
light/laser setup that you wish, or a hand held flashlight. I suggest you start these stages with
your actual nightstand setup.
- For
the rest of the match, you may only use a gun mounted light/laser if it
fits completely in your strong side hip holster. This will also bump you to a special
“Enhanced” scoring division.
- Some
folks like to shoot a few night match stages with carry ammo. Probably a good idea.
- The
entire match will be freestyle! No
strong hand/weak hand requirement.


88 // Oh well. We'll use the other mechanism below instead.
89 }
90 91 final View home = activity.findViewById(android.R.id.home); 92 if (home == null) {
93 // Action bar doesn't have a known configuration, an OEM messed with things.
676 677 case MotionEvent.ACTION_POINTER_DOWN:
678 final int index = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK)
679 >> MotionEvent.ACTION_POINTER_INDEX_SHIFT; 680 mLastMotionX = ev.getX(index);
681 mLastMotionY = ev.getY(index);
Note: This issue has an associated quickfix operation in Eclipse/ADT
Priority: 6 / 10
Category: Correctness
Severity: Warning
Explanation: Finds inlined fields that may or may not work on older platforms.
This check scans through all the Android API field references in the application and flags certain constants, such as static final integers and Strings, which were introduced in later versions. These will actually be copied into the class files rather than being referenced, which means that the value is available even when running on older devices. In some cases that's fine, and in other cases it can result in a runtime crash or incorrect behavior. It depends on the context, so consider the code carefully and device whether it's safe and can be suppressed or whether the code needs tbe guarded.
If you really want to use this API and don't need to support older devices just set the minSdkVersion in your AndroidManifest.xml file.
If your code is deliberately accessing newer APIs, and you have ensured (e.g. with conditional execution) that this code will only ever be called on a supported platform, then you can annotate your class or method with the @TargetApi annotation specifying the local minimum SDK to apply, such as @TargetApi(11), such that this check considers 11 rather than your manifest file's minimum SDK as the required API level.
81 @Override
82 public void run() {
83 if (mAttached) {
84 final int layerType = getLayerType(); 85 // If it's already a hardware layer, it'll be built anyway.
86 if (layerType != LAYER_TYPE_HARDWARE || mFirst) {
693 }
694 695 private void onPointerUp(MotionEvent ev) {
696 final int pointerIndex = ev.getActionIndex(); 697 final int pointerId = ev.getPointerId(pointerIndex);
698 if (pointerId == mActivePointerId) {
Note: This issue has an associated quickfix operation in Eclipse/ADT
Priority: 6 / 10
Category: Correctness
Severity: Error
Explanation: Finds API accesses to APIs that are not supported in all targeted API versions.
This check scans through all the Android API calls in the application and warns about any calls that are not available on all versions targeted by this application (according to its minimum SDK attribute in the manifest).
If you really want to use this API and don't need to support older devices just set the minSdkVersion in your AndroidManifest.xml file.
If your code is deliberately accessing newer APIs, and you have ensured (e.g. with conditional execution) that this code will only ever be called on a supported platform, then you can annotate your class or method with the @TargetApi annotation specifying the local minimum SDK to apply, such as @TargetApi(11), such that this check considers 11 rather than your manifest file's minimum SDK as the required API level.
If you are deliberately setting android: attributes in style definitions, make sure you place this in a values-v11 folder in order to avoid running into runtime conflicts on certain devices where manufacturers have added custom attributes whose ids conflict with the new ones on later platforms.
Similarly, you can use tools:targetApi="11" in an XML file to indicate that the element will only be inflated in an adequate context.
../AndroidManifest.xml:7: Not targeting the latest versions of Android; compatibility modes apply. Consider testing and updating this version. Consult the android.os.Build.VERSION_CODES javadoc for details.
Explanation: Checks that the manifest specifies a targetSdkVersion that is recent.
When your application runs on a version of Android that is more recent than your targetSdkVersion specifies that it has been tested with, various compatibility modes kick in. This ensures that your application continues to work, but it may look out of place. For example, if the targetSdkVersion is less than 14, your app may get an option button in the UI.
To fix this issue, set the targetSdkVersion to the highest available value. Then test your app to make sure everything works correctly. You may want to consult the compatibility notes to see what changes apply to each version you are adding support for: http://developer.android.com/reference/android/os/Build.VERSION_CODES.html
Explanation: Looks for old or obsolete Gradle library dependencies.
This detector looks for usages of libraries where the version you are using is not the current stable release. Using older versions is fine, and there are cases where you deliberately want to stick with an older version. However, you may simply not be aware that a more recent version is available, and that is what this lint check helps find.
../AndroidManifest.xml: Should explicitly set android:allowBackup to true or false (it's true by default, and that can have some security implications for the application's data)
Note: This issue has an associated quickfix operation in Eclipse/ADT
Priority: 3 / 10
Category: Security
Severity: Warning
Explanation: Ensure that allowBackup is explicitly set in the application's manifest.
By default, this flag is set to true. When this flag is set to true, application data can be backed up and restored by the user using adb backup and adb restore.
This may have security consequences for an application. adb backup allows users who have enabled USB debugging to copy application data off of the device. Once backed up, all application data can be read by the user. adb restore allows creation of application data from a source specified by the user. Following a restore, applications should not assume that the data, file permissions, and directory permissions were created by the application itself.
Setting allowBackup="false" opts an application out of both backup and restore.
To fix this warning, decide whether your application should support backup, and explicitly set android:allowBackup=(true|false)"
The following issues were not run by lint, either because the check is not enabled by default, or because it was disabled with a command line flag or via one or more lint.xml configuration files in the project directories.
Explanation: Looks for Back buttons, which are not common on the Android platform.
According to the Android Design Guide,
"Other platforms use an explicit back button with label to allow the user to navigate up the application's hierarchy. Instead, Android uses the main action bar's app icon for hierarchical navigation and the navigation bar's back button for temporal navigation."
This check is not very sophisticated (it just looks for buttons with the label "Back"), so it is disabled by default to not trigger on common scenarios like pairs of Back/Next buttons to paginate through screens.
An "easter egg" is code deliberately hidden in the code, both from potential users and even from other developers. This lint check looks for code which looks like it may be hidden from sight.
Explanation: Suggests replacing uses of getters with direct field access within a class.
Accessing a field within the class that defines a getter for that field is at least 3 times faster than calling the getter. For simple getters that do nothing other than return the field, you might want to just reference the local field directly instead.
NOTE: As of Android 2.3 (Gingerbread), this optimization is performed automatically by Dalvik, so there is no need to change your code; this is only relevant if you are targeting older versions of Android.
Explanation: Looks for dependencies using a dynamic version rather than a fixed version.
Using + in dependencies lets you automatically pick up the latest available version rather than a specific, named version. However, this is not recommended; your builds are not repeatable; you may have tested with a slightly different version than what the build server used. (Using a dynamic version as the major version number is more problematic than using it in the minor version position.)
More info:
To suppress this error, use the issue id "GradleDynamicVersion" as explained in the Suppressing Warnings and Errors section.
Explanation: Ensures that launcher icons, notification icons etc have the correct size.
There are predefined sizes (for each density) for launcher icons. You should follow these conventions to make sure your icons fit in with the overall look of the platform.
Disabled By: Default
Priority: 6 / 10
Category: Bi-directional Text
Severity: Error
Explanation: Looks for compatibility issues with RTL support.
API 17 adds a textAlignment attribute to specify text alignment. However, if you are supporting older versions than API 17, you must also specify a gravity or layout_gravity attribute, since older platforms will ignore the textAlignment attribute.
Disabled By: Default
Priority: 3 / 10
Category: Bi-directional Text
Severity: Warning
Explanation: Looks for usages of right-to-left text constants without enabling RTL support.
To enable right-to-left support, when running on API 17 and higher, you must set the android:supportsRtl attribute in the manifest <application> element.
If you have started adding RTL attributes, but have not yet finished the migration, you can set the attribute to false to satisfy this lint check.
Disabled By: Default
Priority: 5 / 10
Category: Bi-directional Text
Severity: Warning
Explanation: Looks for hardcoded left/right constants which could be start/end for bidirectional text.
Using Gravity#LEFT and Gravity#RIGHT can lead to problems when a layout is rendered in locales where text flows from right to left. Use Gravity#START and Gravity#END instead. Similarly, in XML gravity and layout_gravity attributes, use start rather than left.
For XML attributes such as paddingLeft and layout_marginLeft, use paddingStart and layout_marginStart. NOTE: If your minSdkVersion is less than 17, you should add both the older left/right attributes as well as the new start/right attributes. On older platforms, where RTL is not supported and the start/right attributes are unknown and therefore ignored, you need the older left/right attributes. There is a separate lint check which catches that type of error.
(Note: For Gravity#LEFT and Gravity#START, you can use these constants even when targeting older platforms, because the start bitmask is a superset of the left bitmask. Therefore, you can use gravity="start" rather than gravity="left|start".)
Disabled By: Default
Priority: 6 / 10
Category: Bi-directional Text
Severity: Error
Explanation: Ensures that specifying padding on one side is matched by padding on the other.
If you specify padding or margin on the left side of a layout, you should probably also specify padding on the right side (and vice versa) for right-to-left layout symmetry.
Explanation: Looks for TextViews which should probably allow their text to be selected.
If a <TextView> is used to display data, the user might want to copy that data and paste it elsewhere. To allow this, the <TextView> should specify android:textIsSelectable="true".
This lint check looks for TextViews which are likely to be displaying data: views whose text is set dynamically. This value will be ignored on platforms older than API 11, so it is okay to set it regardless of your minSdkVersion.
Explanation: Looks for comment markers of the form //STOPSHIP which indicates that code should not be released yet.
Using the comment // STOPSHIP can be used to flag code that is incomplete but checked in. This comment marker can be used to indicate that the code should not be shipped until the issue is addressed, and lint will look for these.
Note: This issue has an associated quickfix operation in Eclipse/ADT
Disabled By: Default
Priority: 5 / 10
Category: Usability:Typography
Severity: Warning
Explanation: Looks for straight quotes which can be replaced by curvy quotes.
Straight single quotes and double quotes, when used as a pair, can be replaced by "curvy quotes" (or directional quotes). This can make the text more readable.
Note that you should never use grave accents and apostrophes to quote, `like this'.
(Also note that you should not use curvy quotes for code fragments.)
This resource id definition appears not to be needed since it is not referenced from anywhere. Having id definitions, even if unused, is not necessarily a bad idea since they make working on layouts and menus easier, so there is not a strong reason to delete these.
Lint errors can be suppressed in a variety of ways:
1. With a @SuppressLint annotation in the Java code
2. With a tools:ignore attribute in the XML file
3. With a lint.xml configuration file in the project
4. With a lint.xml configuration file passed to lint via the --config flag
5. With the --ignore flag passed to lint.
To suppress a lint warning with an annotation, add a @SuppressLint("id") annotation on the class, method or variable declaration closest to the warning instance you want to disable. The id can be one or more issue id's, such as "UnusedResources" or {"UnusedResources","UnusedIds"}, or it can be "all" to suppress all lint warnings in the given scope.
To suppress a lint warning in an XML file, add a tools:ignore="id" attribute on the element containing the error, or one of its surrounding elements. You also need to define the namespace for the tools prefix on the root element in your document, next to the xmlns:android declaration:
* xmlns:tools="http://schemas.android.com/tools"
To suppress lint warnings with a configuration XML file, create a file named lint.xml and place it at the root directory of the project in which it applies. (If you use the Eclipse plugin's Lint view, you can suppress errors there via the toolbar and Eclipse will create the lint.xml file for you.).
The format of the lint.xml file is something like the following:
<?xml version="1.0" encoding="UTF-8"?>
<lint>
<!-- Disable this given check in this project -->
<issue id="IconMissingDensityFolder" severity="ignore" />
<!-- Ignore the ObsoleteLayoutParam issue in the given files -->
<issue id="ObsoleteLayoutParam">
<ignore path="res/layout/activation.xml" />
<ignore path="res/layout-xlarge/activation.xml" />
</issue>
<!-- Ignore the UselessLeaf issue in the given file -->
<issue id="UselessLeaf">
<ignore path="res/layout/main.xml" />
</issue>
<!-- Change the severity of hardcoded strings to "error" -->
<issue id="HardcodedText" severity="error" />
</lint>
To suppress lint checks from the command line, pass the --ignore flag with a comma separated list of ids to be suppressed, such as:
"lint --ignore UnusedResources,UselessLeaf /my/project/path"


Structure:
| 0:00 | 0:30 | 1:00 | 1:30 | 2:00 |
|---|---|---|---|---|
4
Yeah yeah! |
4 This is a verse! words are awesome! |
4
Look guys! It's a chorus! yeah yeah yeah |
4
Take it to the bridge! like water under the bridge |
4
Final Chorus yeah yeah! we made it to the end |


Time remaining:
-
Terrorist plot:
Who?
Select group
Cube group
Tetrahedron group
Sphere group
What?
Select target
an airport
a military base
a pumping station
Where?
Select country
Bonoboland
Gibbonland
Lemurland
When?
Select month
January
February
March
April
May
June
July
August
September
October
November
December
Select day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
at
Select time
1:00
2:00
3:00
4:00
5:00
6:00
7:00
8:00
9:00
10:00
11:00
12:00
Select AM/PM
AM
PM


Next, lets add support for
- Data Structures
In the process of doing so, we will learn about
- Heap Allocation
- Run-time Tags
Creating Heap Data Structures
We have already support for two primitive data types
we could add several more of course, e.g.
Char
Double
orFloat
Long
orShort
etc. (you should do it!)
However, for all of those, the same principle applies, more or less
- As long as the data fits into a single word (4-bytes)
Instead, we’re going to look at how to make unbounded data structures
- Lists
- Trees
which require us to put data on the heap (not just the stack) that we’ve used so far.
Pairs
While our goal is to get to lists and trees, the journey of a thousand miles, etc., and so, we will begin with the humble pair.
Semantics (Behavior)
First, lets ponder what exactly we’re trying to achieve. We want to enrich our language with two new constructs:
Constructing pairs, with a new expression of the form
(e0, e1)
wheree0
ande1
are expressions.Accessing pairs, with new expressions of the form
e[0]
ande[1]
which evaluate to the first and second element of the tuplee
respectively.
For example,
should evaluate to 5
.
Strategy
Next, lets informally develop a strategy for extending our language with pairs, implementing the above semantics. We need to work out strategies for:
- Representing pairs in the machine’s memory,
- Constructing pairs (i.e. implementing
(e0, e1)
in assembly), - Accessing pairs (i.e. implementing
e[0]
ande[1]
in assembly).
1. Representation
Recall that we represent all values:
Number
like0
,1
,2
…Boolean
liketrue
,false
as a single word either
- 4 bytes on the stack, or
- a single register
eax
.
EXERCISE
What kinds of problems do you think might arise if we represent a pair (2, 3)
on the stack as:
| |
-------
| 3 |
-------
| 2 |
-------
| ... |
-------
Pairs vs. Primitive Values
The main difference between pairs and primitive values like number
and boolean
is that there is no fixed or bounded amount of space we can give to a pair. For example:
(4, 5)
takes at least 2 words,(3, (4, 5))
takes at least 3 words,(2, (3, (4, 5)))
takes at least 4 words and so on.
Thus, once you start nesting pairs we can’t neatly tuck all the data into a fixed number of 1- or 2- word slots.
Pointers
Every problem in computing can be solved by adding a level of indirection.
We will represent a pair by a pointer to a block of two adjacent words of memory.
The above shows how the pair (2, (3, (4, 5)))
and its sub-pairs can be stored in the heap using pointers.
(4,5)
is stored by adjacent words storing
4
and5
(3, (4, 5))
is stored by adjacent words storing
3
and- a pointer to a heap location storing
(4, 5)
(2, (3, (4, 5)))
is stored by adjacent words storing
2
and- a pointer to a heap location storing
(3, (4, 5))
.
A Problem: Numbers vs. Pointers?
How will we tell the difference between numbers and pointers?
That is, how can we tell the difference between
- the number 5 and
- a pointer to a block of memory (with address
5
)?
Each of the above corresponds to a different tuple
(4, 5)
or(4, (...))
.
so its pretty crucial that we have a way of knowing which value it is.
Tagging Pointers
As you might have guessed, we can extend our tagging mechanism to account for pointers.
| Type | LSB |
|---|---|
number |
xx0 |
boolean |
111 |
pointer |
001 |
That is, for
number
the last bit will be0
(as before),boolean
the last 3 bits will be111
(as before), andpointer
the last 3 bits will be001
.
(We have 3-bits worth for tags, so have wiggle room for other primitive types.)
Address Alignment
As we have a 3 bit tag, leaving 32 - 3 = 29 bits for the actual address. This means, our actual available addresses, written in binary are of the form
| Binary | Decimal |
|---|---|
| 0b00000000 | 0 |
| 0b00001000 | 8 |
| 0b00010000 | 16 |
| 0b00011000 | 24 |
| 0b00100000 | 32 |
| … |
That is, the addresses are 8-byte aligned. Which is great because at each address, we have a pair, i.e. a 2-word = 8-byte block, so the next allocated address will also fall on an 8-byte boundary.
2. Construction
Next, lets look at how to implement pair construction that is, generate the assembly for expressions like:
To construct a pair (e1, e2)
we
- Allocate a new 2-word block, and getting the starting address at
eax
, - Copy the value of
e1
(resp.e2
) into[eax]
(resp.[eax + 4]
). - Tag the last bit of
eax
with1
.
The resulting eax
is the value of the pair
- The last step ensures that the value carries the proper tag.
ANF will ensure that e1
and e2
are both immediate expressions which will make the second step above straightforward.
EXERCISE How will we do ANF conversion for (e1, e2)
?
Allocating Addresses
We will use a global register esi
to maintain the address of the next free block on the heap. Every time we need a new block, we will:
- Copy the current
esi
intoeax
- set the last bit to
1
to ensure proper tagging. eax
will be used to fill in the values
- Increment the value of
esi
by8
- thereby “allocating” 8 bytes (= 2 words) at the address in
eax
Note that if
- we start our blocks at an 8-byte boundary, and
- we allocate 8 bytes at a time,
then
- each address used to store a pair will fall on an 8-byte boundary (i.e. have last three bits set to
0
).
So we can safely turn the address in eax
into a pointer
+ by setting the last bit to 1
.
NOTE: In your assignment, we will have blocks of varying sizes so you will have to take care to maintain the 8-byte alignment, by “padding”.
Example: Allocation
In the figure below, we have
- a source program on the left,
- the ANF equivalent next to it.
The figure below shows the how the heap and esi
evolve at points 1, 2 and 3:
QUIZ
In the ANF version, p
is the second (local) variable stored in the stack frame. What value gets moved into the second stack slot when evaluating the above program?
0x3
(3, (4, 5))
0x6
0x9
0x10
3. Accessing
Finally, to access the elements of a pair, i.e. compiling expressions like e[0]
(resp. e[1]
)
- Check that immediate value
e
is a pointer - Load
e
intoeax
- Remove the tag bit from
eax
- Copy the value in
[eax]
(resp.[eax + 4]
) intoeax
.
Example: Access
Here is a snapshot of the heap after the pair(s) are allocated.
Lets work out how the values corresponding to x
, y
and z
in the example above get stored on the stack frame in the course of evaluation.
| Variable | Hex Value | Value |
|---|---|---|
anf0 |
0x001 |
ptr 0 |
p |
0x009 |
ptr 8 |
x |
0x006 |
num 3 |
anf1 |
0x001 |
ptr 0 |
y |
0x008 |
num 4 |
z |
0x00A |
num 5 |
anf2 |
0x00E |
num 7 |
| result | 0x018 |
num 12 |
Plan
Pretty pictures are well and good, time to build stuff!
As usual, lets continue with our recipe:
- Run-time
- Types
- Transforms
We’ve already built up intuition of the strategy for implementing tuples. Next, lets look at how to implement each of the above.
Run-Time
We need to extend the run-time (c-bits/main.c
) in two ways.
Allocate a chunk of space on the heap and pass in start address to
our_code
.Print pairs properly.
Allocation
The first step is quite easy we can use calloc
as follows:
int main(int argc, char** argv) {
int* HEAP = calloc(HEAP_SIZE, sizeof (int));
int result = our_code_starts_here(HEAP);
print(result);
return 0;
}
The above code,
- Allocates a big block of contiguous memory (starting at
HEAP
), and - Passes this address in to
our_code
.
Now, our_code
needs to, at the beginning start with instructions that will copy the parameter into esi
and then bump it up at each allocation.
Printing
To print pairs, we must recursively traverse the pointers until we hit number
or boolean
.
We can check if a value is a pair by looking at its last 3 bits:
We can use the above test to recursively print (word)-values:
void print(int val) {
if(val & 0x00000001 ^ 0x00000001) { // val is a number
printf("%d", val >> 1);
}
else if(val == 0xFFFFFFFF) { // val is true
printf("true");
}
else if(val == 0x7FFFFFFF) { // val is false
printf("false");
}
else if(isPair(val)) {
int* valp = (int*) (val - 1); // extract address
printf("(");
print(*valp); // print first element
printf(", ");
print(*(valp + 1)); // print second element
printf(")");
}
else {
printf("Unknown value: %#010x", val);
}
}
Types
Next, lets move into our compiler, and see how the core types need to be extended.
Source
We need to extend the source Expr
with support for tuples
data Expr a
= ...
| Pair (Expr a) (Expr a) a -- ^ construct a pair
| GetItem (Expr a) Field a -- ^ access a pair's element
In the above, Field
is
NOTE: Your assignment will generalize pairs to n-ary tuples using
Tuple [Expr a]
representing(e1,...,en)
GetItem (Expr a) (Expr a)
representinge1[e2]
Dynamic Types
Let us extend our dynamic types Ty
see to include pairs:
Assembly
The assembly Instruction
are changed minimally; we just need access to esi
which will hold the value of the next available memory block:
Transforms
Our code must take care of three things:
- Initialize
esi
to allow heap allocation, - Construct pairs,
- Access pairs.
The latter two will be pointed out directly by GHC * They are new cases that must be handled in anf
and compileExpr
Initialize
We need to initialize esi
with the start position of the heap, that is passed in by the run-time.
How shall we get a hold of this position?
To do so, our_code
starts off with a prelude
prelude :: [Instruction]
prelude =
[ IMov (Reg ESI) (RegOffset 4 ESP) -- copy param (HEAP) off stack
, IAdd (Reg ESI) (Const 8) -- adjust to ensure 8-byte aligned
, IAnd (Reg ESI) (HexConst 0xFFFFFFF8) -- add 8 and set last 3 bits to 0
]
- Copy the value off the (parameter) stack, and
- Adjust the value to ensure the value is 8-byte aligned.
QUIZ
Why add 8
to esi
? What would happen if we removed that operation?
esi
would not be 8-byte aligned?esi
would point into the stack?esi
would not point into the heap?esi
would not have enough space to write 2 bytes?
Construct
To construct a pair (v1, v2)
we directly implement the above strategy:
compileExpr env (Pair v1 v2)
= pairAlloc -- 1. allocate pair, resulting addr in `eax`
++ pairCopy First (immArg env v1) -- 2. copy values into slots
++ pairCopy Second (immArg env v2)
++ setTag EAX TPair -- 3. set the tag-bits of `eax`
Lets look at each step in turn.
Allocate
To allocate, we just copy the current pointer esi
and increment by 8
bytes,
- accounting for two 4-byte (word) blocks for each pair element.
pairAlloc :: Asm
pairAlloc
= [ IMov (Reg EAX) (Reg ESI) -- copy current "free address" `esi` into `eax`
, IAdd (Reg ESI) (Const 8) -- increment `esi` by 8
]
Copy
We copy an Arg
into a Field
by * saving the Arg
into a helper register ebx
, * copying ebx
into the field’s slot on the heap.
The field’s slot is either [eax]
or [eax + 4]
depending on whether the field is First
or Second
.
pairAddr :: Field -> Arg
pairAddr fld = Sized DWordPtr (RegOffset (4 * fieldOffset fld) EAX)
fieldOffset :: Field -> Int
fieldOffset First = 0
fieldOffset Second = 1
Tag
Finally, we set the tag bits of eax
by using typeTag TPair
which is defined
setTag :: Register -> Ty -> Asm
setTag r ty = [ IAdd (Reg r) (typeTag ty) ]
typeTag :: Ty -> Arg
typeTag TNumber = HexConst 0x00000000 -- last 1 bit is 0
typeTag TBoolean = HexConst 0x00000007 -- last 3 bits are 111
typeTag TPair = HexConst 0x00000001 -- last 1 bits is 1
Access
To access tuples, lets update compileExpr
with the strategy above:
compileExpr env (GetItem e fld)
= assertType env e TPair -- 1. check that e is a (pair) pointer
++ [ IMov (Reg EAX) (immArg env e) ] -- 2. load pointer into eax
++ unsetTag EAX TPair -- 3. remove tag bit to get address
++ [ IMov (Reg EAX) (pairAddr fld) ] -- 4. copy value from resp. slot to eax
we remove the tag bits by doing the opposite of setTag
namely:
N-ary Tuples
Thats it! Lets take our compiler out for a spin, by using it to write some interesting programs!
First, lets see how to generalize pairs to allow for
- triples
(e1,e2,e3)
, —> (e1, (e2, e3)) - quadruples
(e1,e2,e3,e4)
, –> (e1, (e2, (e3, e4))) - pentuples
(e1,e2,e3,e4,e5)
and so on.
We just need a library of functions in our new egg
language to
- Construct such tuples, and
- Access their fields.
Constructing Tuples
We can write a small set of functions to construct tuples (upto some given size):
def tup3(x1, x2, x3):
(x1, (x2, x3))
def tup4(x1, x2, x3, x4):
(x1, (x2, (x3, x4)))
def tup5(x1, x2, x3, x4, x5):
(x1, (x2, (x3, (x4, x5))))
Accessing Tuples
We can write a single function to access tuples of any size.
So the below code
yuple = (1, (2, (3, (4, 5))))
get(yuple, 0) = 1
get(yuple, 1) = 2
get(yuple, 2) = 3
get(yuple, 3) = 4
get(yuple, 4) = 5
def get(t, i):
if i == 0:
t[0]
else:
get(t[1],i-1)
def tup3(x1, x2, x3):
(x1, (x2, x3))
def tup4(x1, x2, x3, x4):
(x1, (x2, (x3, x4)))
def tup5(x1, x2, x3, x4, x5):
(x1, (x2, (x3, (x4, x5))))
let t = tup5(1, 2, 3, 4, 5) in
, x0 = print(get(t, 0))
, x1 = print(get(t, 1))
, x2 = print(get(t, 2))
, x3 = print(get(t, 3))
, x4 = print(get(t, 4))
in
99
should print out:
0
1
2
3
4
99
How shall we write it?
QUIZ
Using the above “library” we can write code like:
def get(e, i):
if (i == 0):
head(e)
else:
get(tail(e), i-1)
let quad = tup4(1, 2, 3, 4) in
get(quad, 0) + get(quad, 1) + get(quad, 2) + get(quad, 3)
What will be the result of compiling the above?
- Compile error
- Segmentation fault
- Other run-time error
4
10
QUIZ
Using the above “library” we can write code like:
What will be the result of compiling the above?
- Compile error
- Segmentation fault
- Other run-time error
4
10
Lists
Once we have pairs, we can start encoding unbounded lists.
Construct
To build a list, we need two constructor functions:
```python def empty(): false
def cons(h, t): (h, t) ``
We can now encode lists as:
Access
To access a list, we need to know
- Whether the list
isEmpty
, and - A way to access the
head
and thetail
of a non-empty list.
Examples
We can now write various functions that build and operate on lists, for example, a function to generate the list of numbers between i
and j
which should produce the result
(1,(2,(3,(4,false))))
and a function to sum up the elements of a list:
which should produce the result 10
.
Recap
We have a pretty serious language now, with:
- Data Structures
which are implemented using
- Heap Allocation
- Run-time Tags
which required a bunch of small but subtle changes in the
- runtime and compiler
In your assignment, you will add native support for n-ary tuples, letting the programmer write code like:
(e1, e2, e3, ..., en) # constructing tuples of arbitrary arity
e1[e2] # allowing expressions to be used as fields
Next, we’ll see how to
- use the “pair” mechanism to add higher-order functions and
- reclaim unused memory via garbage collection.
data List = Node Int List -- (Int, List)
| Empty -- false
1:2:3:4:5:6:7:8:[]
(1,(2,(3,(4,(5,(6,(7,(8,false))))))))
def isEmpty(l):
l == false
def cons(h, t):
(h, t)
def head(e):
e[0]
def tail(e):
e[1]
def length(l):
if isEmpty(l):
0
else:
1 + length(tail(l))
data Tree = Node Int Tree Tree -- (Int, Tree, Tree)
| Leaf -- False
def node(n, l, r):
return (n, l, r)
def isLeaf(t):
t == false
def nodeVal(t)::
t[0]
def nodeLeft(t)::
t[1]
def nodeRight(t)::
t[2]


{% extends "base.html" %} {% block content %}
This example demonstrates how to use DocuSign Click to activate a new
clickwrap that you have already created.
By default, new clickwraps are inactive. You must activate your clickwrap before
you can use it.
Documentation about this example.
{% endif %}API method used: ClickWraps:updateClickwrapVersion and ClickWraps:getClickwraps
View source file {{ source_file }} on GitHub.
{% if args['clickwraps'] is empty %}
Problem: You do not have clickwraps to activate. Go to example#1 and create one: create clickwrap.
Please choose a clickwrap to activate
{% endif %} {% endblock %}


Controls whether the screen displays formulas, gridlines, row and column headings, and other screen attributes. There are two syntax forms of this function. Use syntax 1 to control screen display. Use syntax 2 to control the display of the Info Window.
Syntax 1 Controls screen display
Syntax 2 Controls display of Info Window
Return to index
Controls whether the screen displays formulas, gridlines, row and column headings, and other screen attributes. There are two syntax forms of this function. Use syntax 1 to control screen display. This function is provided for compatibility with Microsoft Excel version 4.0. To control screen display in Microsoft Excel version 5.0 or later, see OPTIONS.VIEW.
Arguments for this syntax form correspond to options and check boxes in the Display Options dialog box in Microsoft Excel version 4.0. Arguments that correspond to check boxes are logical values. If an argument is TRUE, Microsoft Excel selects the check box; if FALSE, Microsoft Excel clears the check box. If an argument is omitted, no action is taken.
Syntax
DISPLAY(formulas, gridlines, headings, zeros, color_num, reserved, outline, page_breaks, object_num)
DISPLAY?(formulas, gridlines, headings, zeros, color_num, reserved, outline, page_breaks, object_num)
Formulas corresponds to the Formulas check box. The default is FALSE on worksheets and TRUE on macro sheets.
Gridlines corresponds to the Gridlines check box. The default is TRUE.
Headings corresponds to the Row & Column Headings check box. The default is TRUE.
Zeros corresponds to the Zero Values check box. The default is TRUE.
Color_num is a number from 0 to 56 corresponding to the gridline and heading colors in the Display Options dialog box; 0 corresponds to automatic color and is the default value.
Reserved is reserved for certain international versions of Microsoft Excel.
Outline corresponds to the Outline Symbols check box. The default is TRUE.
Page_breaks corresponds to the Automatic Page Breaks check box. The default is FALSE.
Object_num is a number from 1 to 3 corresponding to the display options in the Object box.
| Object_num | Corresponds to |
| 1 or omitted | Show All |
| 2 | Show Placeholders |
| 3 | Hide |
Related Functions
OPTIONS.VIEW Controls display
WORKSPACE Changes workspace settings
ZOOM Enlarges or reduces a sheet in the active window
Syntax 2 Controls display of Info Window
Return to index
Equivalent to clicking the commands on the Info menu when the Info Window is active. Controls which commands on the Info Window are in effect. There are two syntax forms of this function. Use syntax 2 to control the display of the Info Window. The Info Window must be active to use this form of DISPLAY. This function is included for compatibility with Microsoft Excel 95 or earlier; the Info Window is not available in Microsoft Excel 97 or later.
Arguments in this syntax form correspond to commands on the Info menu with the same names.
For these arguments:
If the argument is TRUE, Microsoft Excel displays the corresponding Info item.
If the argument is FALSE, Microsoft Excel does not display the corresponding Info item.
If the argument is omitted, the status of the item is unchanged.
Syntax
For controlling Info Window display
DISPLAY(cell, formula, value, format, protection, names, precedents, dependents, note)
Cell is a logical value that corresponds to the Cell command and controls the display of cell information in the Info Window. If TRUE, cell information will be displayed; if FALSE, cell information will not be displayed.
Formula is a logical value that corresponds to the Formula command and controls the display of formula information in the Info Window. If TRUE, formula information will be displayed; if FALSE, formula information will not be displayed.
Value is a logical value that corresponds to the Value command and controls the display of value information in the Info Window. If TRUE, value information will be displayed; if FALSE, value information will not be displayed.
Format is a logical value that corresponds to the Format command and controls the display of format information in the Info Window. If TRUE, format information will be displayed; if FALSE, format information will not be displayed.
Protection is a logical value that corresponds to the Protection command and controls the display of protection information in the Info Window. If TRUE, protection information will be displayed; if FALSE, protection information will not be displayed.
Names is a logical value that corresponds to the Names command and controls the display of name information in the Info Window. If TRUE, name information will be displayed; if FALSE, name information will not be displayed.
Precedents is a number from 1 to 3 that specifies which precedents to list, according to the following table.
Dependents is a number from 1 to 3 that specifies which dependents to list, according to the following table.
| Precedents or dependents | List |
| 0 | None |
| 1 | Direct only |
| 2 | All levels |
Note is a logical value that corresponds to the Note command and controls the display of note information in the Info Window. If TRUE, note information will be displayed; if FALSE, note information will not be displayed.
Related Functions
SHOW.INFO Controls the display of the Info Window
ZOOM Enlarges or reduces a sheet in the active window
Syntax 1 Controls screen display
Return to index


fluor
Businessmodel of Fluor
Customer Segments
Fluor provides a range of engineering and procurement services to commercial and public clients operating across multiple sectors. The Company offers solutions primarily to companies and organisations in the following sectors:
- Energy and Chemicals, including onshore and offshore oil and gas producers, biofuel companies, gas treatment and processing companies, and petroleum refiners;
- Power, including renewable energy providers, nuclear energy companies, and energy transmission providers;
- Infrastructure, including rail and transit companies, aviation companies, and telecommunications groups;
- Mining and Metals, comprising mineral and metals miners, and mining processing companies;
- Life Sciences and Advanced Manufacturing, including pharmaceutical and biotechnology companies, water distribution companies, and maintenance solutions providers; and
- Government, including nuclear remediation and waste disposal operations, design-build projects, and disaster and emergency response projects. Fluor’s largest clients are the US Government and Exxon Mobil, which accounted in 2015 for 12% and 11% respectively of the Company’s total revenue.
Fluor’s principal operating jurisdiction is its home market of the US, which accounted for more than 40% of the Company’s total revenue for 2015. The Company, however, also serves a number of clients across Canada, Asia Pacific, Europe, Central and South America, and the Middle East and Africa.
Value Propositions
Fluor provides value to its clients in the following ways:
- Its industry standing and reputation, with the Company being one of the largest companies of its kind worldwide, and having a track-record for high-quality performance that has attracted notable clients such as Exxon Mobil and the US Government;
- Its technical expertise and experience, with the Company employing highly-trained employees across its five operating segments and technically experienced leadership staff;
- Its global breadth and operating presence, with the Company serving clients and working on projects across the Americas, Europe, Asia Pacific, the Middle East and Africa,
- Its range of services and target industries, with the Company providing tailored services to clients across multiple industries, including the oil and gas, infrastructure, and energy sectors. ### Channels
Fluor operates a website at www.fluor.com, which provides customers with information pertaining to the Company’s various services, operating locations, projects and markets. The complex nature of the Company’s operations, however, does not allow for the operation of an online sales channel.
Fluor deals with its customers through direct sales teams organised by operating segment and geographic region. The Company operates a broad network of offices that enable the Company to do business locally across all of its operating regions, including offices in the Us, Canada, Brazil, India, Indonesia, China, Kazakhstan, Puerto Rico, Kuwait, Spain and the UAE.
In some jurisdictions, Fluor also provides services via local alliances, and joint-ventures such as ICA Fluor in Mexico and CFPS Engenharia e Projeto in Brazil.
Customer Relationships
Fluor does not offer any services to clients on a purely self-service basis. The Company, instead, consults directly with its clients in order to establish an accurate brief of their individual needs, allowing them to provide an entirely bespoke service on a project-by-project basis. Fluor actively pursues relationships with new clients, and attempts to build upon its long-term relationships with existing clients, with the aim always to encourage recurring business and longstanding relationships.
Fluor works closely with its clients throughout its projects, and provides a range of ongoing support and maintenance services. The Company includes contact details for its various offices and departments on its website, with potential and existing clients able to contact the Company directly with sales enquiries, supplier and contracting queries, and general support and enquiries. Clients can also interact directly with Fluor through its social media accounts with Twitter, Facebook, YouTube, and LinkedIn.
Key Activities
Fluor operates as a holding company. Through its numerous subsidiaries and joint-ventures the Company provides engineering, procurement, construction, fabrication and modularisation, commissioning and maintenance, as well as project management services across multiple industries.
Fluor organizes its activities into five business segments, divided largely by target market: Oil and Gas, which serves oil and gas production, processing, and chemical and petrochemical industries; Industrial and Infrastructure, which provides design, engineering, procurement, construction, operations and maintenance, and project management services; Government, which provides engineering, construction, logistics, and environmental and nuclear services; Global Services, which provides a range of solutions to support projects across Fluor groups; and Power, which provides a range of services to the gas-fueled and solid-fueled markets.
Key Partners
Fluor collaborates with a range of partners throughout the process of delivering its engineering, maintenance and management solutions. The Company frequently collaborates with industrial partners, participating in consortium project bids and joint-venture operations. Fluor has, in recent years, collaborated on projects with Brazil’s CFPS, Netherlands-based Heijmans, Jersey-incorporated 3i Infrastructure, and the UK’s Cavendish Nuclear.
Fluor also functions as the preferred global engineering partner of BASF, and collaborates with a network of suppliers and contractors, including providers of architectural services, logistics services, processing equipment, courier services, piping and fitting products, and structural products and services.
Key Resources
Fluor’s key resources are its technology and intellectual properties, its physical infrastructure – including its network of fabrication yards, its equipment and machinery resources, its supply chain and supplier and contracting partners, its sales channels, its logistics facilities, and its personnel.
Fluor holds a range of patents and licenses for certain items that used in its operations, including those held by the Company’s operating subsidiary NuScale. While these patents and licences are material to the Company’s operations, Fluor does not consider any one to be so essential that its loss would materially affect its business.
Cost Structure
Fluor incurs costs in relation to its research and development activities – primarily through NuScale, the maintenance and development of its physical infrastructure, its acquisition of resources and equipment, the management and operation of its supply chain and logistics channels, and the retention of its personnel.
Fluor accrues substantial corporate general and administrative costs – including the payment of salaries and benefits to its workforce of more than 38,700 employees worldwide – which amounted to $168 million in 2015. The Company also accrues a comparable amount in rental expenses – relating principally to the lease of office facilities, and equipment used in connection with long-term construction contracts – which in 2015 reached $169 million.
Revenue Streams
Fluor generates revenue through the sale of various engineering and maintenance services across its five operating segments. These services are typically provided on a project-by-project basis under contracts categorised as follows:
- Cost Reimbursable; and
- Fixed-Price, Lump–Sum and Guaranteed Maximum In 2015 Fluor generated revenue in the amount of $18.11 billion, a decrease on the $21.53 billion recorded by the Company in 2014. The Company derived the majority of its revenue from its Oil and Gas segment, which generated $10.04 billion in revue for the year.
The only other segments to record more than $1 billion in annual revenue were the Company’s Industrial and Infrastructure, and Government segments, which generated $4.07 billion and $2.56 billion respectively.


Utilities for secure password hashing via the argon2 algorithm. It is a relatively new hashing algorithm and is believed to be very secure. The 'argon2' implementation included in the package is the reference implementation. The package also includes some utilities that should be useful for digest authentication, including a wrapper of 'blake2b'. For similar R packages, see sodium and 'bcrypt'. See <https://en.wikipedia.org/wiki/Argon2> or <https://eprint.iacr.org/2015/430.pdf> for more information.
| Version: | 0.2-0 |
| Depends: | R (≥ 3.0.0) |
| Published: | 2017-06-12 |
| Author: | Drew Schmidt [aut, cre] |
| Maintainer: | Drew Schmidt <wrathematics at gmail.com> |
| BugReports: | https://github.com/wrathematics/argon2/issues |
| License: | BSD 2-clause License + file LICENSE |
| Copyright: | See inst/COPYRIGHTS for files in src/argon2. argon2 copyright details |
| URL: | https://github.com/wrathematics/argon2 |
| NeedsCompilation: | yes |
| Citation: | argon2 citation info |
| Materials: | README ChangeLog |
| CRAN checks: | argon2 results |
| Reference manual: | argon2.pdf |
| Package source: | argon2_0.2-0.tar.gz |
| Windows binaries: | r-devel: argon2_0.2-0.zip, r-release: argon2_0.2-0.zip, r-oldrel: argon2_0.2-0.zip |
| OS X binaries: | r-release: argon2_0.2-0.tgz, r-oldrel: argon2_0.2-0.tgz |
| Reverse imports: | remoter |
| Reverse suggests: | getPass |
Please use the canonical form https://CRAN.R-project.org/package=argon2 to link to this page.


{% extends 'layout.html' %} {% block body %}
This my first application built using Python Flask framework. I learned from the tutorial "Python Flask From Scratch" Youtube series.


Here are the Secretaries of our club!
Vida Feliz
A compassionate Computer Engineer
Here are the joint secretaries of our club!
Always Being Myself
Family Girl❤💞
Still trying to find out who i am btw dil da ni mada.
A calm and a fun loving person who always tries to find positivity in every aspect of life.
Here are the university passed out members of our club!
I am still trying to find who I am..! Funloving
Giving up is always an option, but it’s never my choice😎
I am the one who is having a dream to defeat myself and become bigger and stronger!!
Here are the loving members of our club!
Be happy 😇
The one who walks with cumulative steps and sometimes just stride as per need.
I am very honest and having positive attitude. I found myself happy by helping others in their difficult situation.
Sweet and innocent!
Strong Personality!
Pradhan Ji!!
I'm slave of my values
Hardworking, Punctual ,Dedicated towards work, Kind Nature ,Helpfull
Compassionate
Zip- Zap- Zoom
I believe in krishna , he is the one deciding my each step , m just born to be a good human being n do something for everyone !
Mostly I like dance, but i like to help some needy. I love nature mostly
An emphatic person.
Extrovertly awsome personality!!
Developer
I like everything I do in a well organized way......it's a kind of OCD to me🤔
Well, I have a 2 year old kiddo hidden inside of me who colors outside the lines once in a while. Coz duh, that's how a masterpiece is made.
Carpe Diem☺
I am honest with to own work . No compromise with our goals.
I m not best in anything😌 but i love to learn new things from others and myself also🙂 and i dont like others dominance over me.. Those type of people disgust me i dont knw why🙁🙁
Self-disciplined and good listener
Be Soft but not weak!
Always stay positive and be happy in each n every situation
Carpe Diem
hardworking and passionate
Nature loving...
I love making people’s day🤝🤝
Sab khush raho
Hacked NASA using HTML(Programming Language)
I m an enthusiastic and passionate person and love to perform any task with determination.
A girl who is a positive thinker, fun loving, loves reading books, tends to do things with perfection, a problem solver for her friends nd is always motivated nd keeps others the same
Think Different, Be Different 🤟
I do a thing called "what i want"
.🤷♂
I'm good at multi-tasking , i enjoy meeting new people every day.
Talented boy.
I’m very sincere towards my responsibilities and my work.
I am determined, passionate,philomath that believes in learning new things everyday. Keen Observer with never ending thoughts and disciplined attitude.
Crazy ! Happy ! Aggarwal 🔥
Friendly
I always remain with my words and stand on my made promises.
I am a man of my word......I will always complete a promise made by me.....
Helpful
Love to watch cricket match!
Happy person,wants to enjoy every moment and wants to learn and gain knowledge.
Helpful!
Happiest person!
Happiest person!
Fanatical! Cricket lover


4. GPIO Pins¶
Use machine.Pin to control I/O pins.
For Zephyr, pins are initialized using a tuple of port and pin number (\"GPIO_x\", pin#)
for the id
value. For example to initialize a pin for the red LED on a FRDM-k64 board:
LED = Pin(("GPIO_1", 22), Pin.OUT)
Reference your board’s datasheet or Zephyr documentation for pin numbers, see below for more examples.
Board |
Pin |
Format |
|---|---|---|
frdm_k64f |
Red LED = PTB22 |
(“GPIO_1”, 22) |
96b_carbon |
LED1 = PD2 |
(“GPIOD”, 2) |
mimxrt685_evk_cm33 |
Green LED = PIO0_14 |
(“GPIO0”, 14) |
4.1. Interrupts¶
The Zephyr port also supports interrupt handling for Pins using machine.Pin.irq()
.
To respond to Pin change IRQs run:
from machine import Pin
SW2 = Pin(("GPIO_2", 6), Pin.IN) # create Pin object for switch 2
SW3 = Pin(("GPIO_0", 4), Pin.IN) # create Pin object for switch 3
SW2.irq(lambda t: print("SW2 changed")) # print message when SW2 state is changed (triggers change IRQ)
SW3.irq(lambda t: print("SW3 changed")) # print message when SW3 state is changed (triggers change IRQ)
while True: # wait
pass


WITNESS LIST Environmental Regulation Committee September 8, 2004-10:00A Oversight For: O'Brien, Beth (Public Citizen) On: Cohen, Seth (Texas Public Interest Research Group) Eden, Dan (Texas Commission on Environmental Quality) Hartnett White, Kathleen (Chairman, Texas Commission on Environmental Quality) Jablonski, Susan (Texas Commission on Environmental Quality) Steib, John (Texas Commission on Environmental Quality) Oversight (Waste) Against: Smith, Tom "Smitty" (Public Citizen) TERP For: Frels, Kelly (Texas Clean Air Working Group) Harris, Judge Ron (Texas Clean Air Working Group) Heller, Joseph (Self) Roberts, Phil (Extengine Transport Systems) Sloan, Daniel (Self and Waste Management Inc) Smith, Tom "Smitty" (Public Citizen) Wickersham, Tod (Mobile Emissions Reduction Coalition) On: Blume, Dana (Port of Houston Authority) Fisher, Scott (Texas Petroleum Marketers & Convenience Store Assoc.) Marquez, Ralph (Commissioner, Texas Commission on Environmental Quality) Newton, Chris (Texas Petroleum Marketers & Convenience Store Assoc.) Walker, Scheleen (Travis County Transportation & Natural Resources Dept.)


1. Introduction and Goals
The development will consist of a WebApp whose objective is to be a decentralized chat, using SOLID technologies. This chat will allow users to exchange messages in different formats (audio, text, video), as well as other functions such as: share screen or video call; It will also allow you to save friends lists, show notifications, among other functions. It will be a web application developed at Angular, and an RDF library will be used to communicate and obtain information on the different PODs.
1.1. Requirements Overview
The application will mainly comply with the following:
-
The system will be based on a decentralized architecture where data storage is separated from the app
-
Users can store their chat data in their own pods
-
The app will allow a user to share pictures, videos or other kinds of files with other friends through the chat
-
A user can get notifications when some friend wants to chat with him
-
Users can have groups of friends with whom they may want to chat
-
It will be possible to have group chats where all members receive the messages
-
Users can have live calls and videos
-
Users can share their screens in the chat
1.2. Quality Goals
The main Stakeholders of this application are Inrupt and users, I will list the most important quality goals for them:
-
Usability : Ease of use by non-technical people.
-
Responsiveness : The application must send messages in real time.
-
Privacy: The application must keep the data private (this is what solid is based on, each one owns their data).
-
Security: The application must be secure, users must know who they are talking to and who has access to the chat.
1.3. Stakeholders
Stakeholders of the system:
-
Developers
-
Professor
-
Users
-
Inrupt
| Role/Name | Contact | Expectations |
|---|---|---|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development |
|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development |
|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development |
|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development |
|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development |
|
Developer |
Have to work with the architecture or with code, documentation of the architecture,have to come up with decisions about the system or its development https://forum.solidproject.org/u/danielferromeral/activity |
|
Professor |
Evaluate and guide the project |
|
Users |
Users can chat,they can have live calls and videos and they can share their screens in the chat |
|
Inrupt |
They has been proposed as a challenge |
2. Architecture Constraints
2.1. Technical Constraints
| Code | Restricction | Motive |
|---|---|---|
TC001 |
Online independence: no central control of data |
Linked-data are completely decentralized and fully under users' control rather than controlled by other entities. |
TC002 |
Frameworks: Angular |
We haven´t worked with this framework before, so we will have to learn how to use it. |
TC003 |
SOLID technology |
app based on the solid specifications. |
TC004 |
Data Storage |
Users can store their chat data in their own pods. |
TC005 |
Share files |
The app will allow a user to share pictures, videos or other kinds of files with other friends through the chat. |
TC006 |
Notifications |
A user can get notifications when some friend wants to chat with him. |
TC007 |
Groups |
Users can have groups of friends with whom they may want to chat. |
TC008 |
Program language: JavaScrip or TypeScript |
We have chosen this language, but we don’t have enough knowledge about this languages. |
2.2. Organizational Constraints
| Code | Restricction | Motive |
|---|---|---|
OC001 |
About Version Control: Git, Tool: Github |
Keep a version of the project after making changes |
OC002 |
6 person group |
We didn’t know each other |
OC003 |
Time schedule |
We don’t have a lot of time for developing the app. Furthermore, we are developing other proyects at the same time. |
0C004 |
Documentation |
|
CC005 |
Open source |
The project, including source code and documentation. |
CC005 |
Beta version |
Limited time to develop the project maximum in May 2019. |
2.3. Conventions Constraints
| Code | Restricction | Motive |
|---|---|---|
CC001 |
Language |
English. The project and the corresponding blog targets an international audience, so English should be used throughout the whole project. |
CC002 |
6 person group |
We didn’t know each other |
CC003 |
Time schedule |
We don’t have a lot of time for developing the app. Furthermore, we are developing other proyects at the same time. |
CC004 |
Non-technical |
Every user should manage the app. |
CC005 |
Security |
Data must not be in touch by external devices |
CC006 |
Privacy |
Only own users can manage their own data. |
CC007 |
Intuitive |
Aesthetics and friendliness of the application. |
CC008 |
Usability |
Usability of technical documentation. |
CC009 |
Originality |
Originality of the solution |
CC010 |
Documentation |
We use AsciiDoc |
3. System Scope and Context
The project that we are going to develop aims to communicate two people through different mechanisms:
-
Text messages.
-
Images.
-
Videos.
-
Video calls.
However, the approach that the application will take it´s around permits. A user can not send a file of any kind or speak with a person if they do not have explicit permission from the recipient.
But the most important point of the chat is not the permissions, but the decentralization. We want only users to have access to the content of those conversations, so that they are the owners of their personal information.
To achieve this goal we will use SOLID. SOLID is a project that consists of a decentralized website. It deals with establishing a connection between several users, separating data application. To establish this connection, we will use what is known as POD. A POD is a unique profile of each user, which allows to store information on the web about it.
We will use these PODs to connect both users, but the data they exchange will be stored in the interlocutors' devices. In this way, we will create a private chat that will have the advantage of being isolated, reliable and safe.
3.1. Business Context
-
Communication elements:
-
Users: Users are the main recipient of the application.
-
Web: Users will connect to the web through their PODs to establish secure communication.
-
-
Communication process:
-
The partners create a POD.
-
The user adds as friend through the PODs to the second interlocutor.
-
The interlocutors log in with their POD in the chat.
-
Ready!
-
What data are exchanged with the environment? Through the website, users will enter some small data on the SOLID website to obtain their POD. Once established the connection between both interlocutors, they will be the only owners and holders of the information they exchange.
| Communication Partner | Input | Output |
|---|---|---|
User |
Chat, video, images, POD information |
Chat, video, images, POD information |
Web |
POD, Server Connection |
3.2. Technical Context
As we have said before, we will use the so-called PODs provided by SOLID to connect to the server of the same, and through it, communicate with other people.
For the design of the connection we will use different mechanisms:
-
RDF: This library allows us to establish the connection. Act as a communicator and thanks to it we can obtain the POD information necessary to establish communication.
-
Authenticator: This tool receives the POD of a user and allows us to know if it is a valid POD.
-
Angular: It is a JavaScript framework that will allow us to handle the language in a more comfortable way.
4. Solution Strategy
4.1. Technology and IDE
The team had to choose between new technologies for us and technologies already kown but that did not have as much suport to SOLID. Based on what we knew, our first option was to choose Java as programming language, but after reading the SOLID documentation, we decided to choose TypeScript, which is a JavaScript-based language, and, more specifically, the Angular Framework.
About the IDE, we choose WebStorm due to its power and the fact that, as students, we have a free payment license. In addition, some of the members of the group have used it in previous subjects. Although, another powerful tools like Visual Studio Code have been really helpful when developing our project.
4.2. Architectural pattern
The development of our architecture is based on a service system. The main class relies on these services to perform the different operations that it needs throughout the execution of the application.
4.3. Methodology of work
We will use Scrum to develope this project. Scrum can provide us an early software development, and more independence when programming. Our project will start implementing the basic functions of a chat and it will grow in complexity (https://en.wikipedia.org/wiki/Scrum_(software_development)).
5. Building Block View
Here is a simple scheme that explains the basic organizations of the application components:
Red: Components of the chat
Light Blue: Different Utilities
Turquoise: Coverage Tests
Orange: Services.
5.1. Whitebox Overall System
We will explain some of the application parts functionality:
5.1.1. Components
This are the different components that interact between them. Each one component is divided in some files, but the most important ones are:
-
HTML: Is represents the interface layer.
-
JS: This is the logic layer, it must contain all the useful logic.
5.1.2. Services
Services are the utilities that our components use to help them improving it´s functionality.
5.1.3. Coverage
Represents the code testing. As we said before, tests are executed in Karma, with Jasmine framework. We use Google Chrome to execute the tests.
5.1.4. Utilities
It is all theuseful resources. In this case, weve used a core that allows us to interact with some librarys. It contains some useful methods.
6. Runtime View
The architecture of the application is very simple:
Once you launch the applicacion, youll see a login views. That login view will redirect you to the official solid login page.
In the solid login page, you´ll introduce your solid credentials. If your data is correct, you´ll login into your profile and see your solid profile page.
In the navegation bar of the application, you will see 4 labels:
-
Profile: The same page. In there you can edit your profile information
-
Chat: The chat page. We´ll introduce about it later.
-
Documentation: A documentation page.
-
A logout icon: It will redirect to the application login.
The chat page
As you can see, the chat page is divided in three layers:
-
Friends layer: In this layer you can search between your friends (for those you should add in solid), and start a conversation.
-
Conversation layer: Here it will show the different conversations.
-
Message layer: There you can send a message to your friend. Once you write you can press the button or simply the Enter key to send it. This message will appear as yours in the conversation layer and will be sended to your partner. Now you can choose to send emojis.
Lets see a couple runtimes scenarios
Scenario 1 Actor 1 wants to send a message to one of his friends, after login in successfully, his runtime would be like this:
Scenario 2 Actor 1 wants to send a message to Actor 2, Actor 2 sends a message to Actor 3 and Actor 3 sends a message to Actor 1:
Scenario 3 Actor 1 log in the app and modify its profile. Pod info will be upload.
7. Deployment View
¿What hardware do you need to use the application?
Fortunately, to use the application you just need one computer connected to Internet. You can also use a mobile phone to chat with your friends, but we haven´t developed the app specyfically to be used on it, so there will be some problems. We are working hard to try to make it more comfortable for mobile users.
At this point of the development, there is no need for geographical permissions or others like that, so the only thing you need is a computer and an Internet connection.
Although, this is an early version of the project, and it hasn´t been optimized yet, so you´ll need some available RAM in your computer, but not too much for worrying about it.
We developed this app mostly in Google Chrome and Firefox, so we recommend this browser.
Mapping of relationship between hardware and software
The relationship between software and hardware is very simple, there are three main components that need special attention:
-
Computer.
-
Browser: As we said before, we recommend Google Chrome and Firefox. Browser connects to the application.
-
Application: It connects to server.
-
Server: Automatically synchronizes with solid server.
It is important to notice that talking about resources the application consumes the same resources as another app, because it is launched in a browser.
There are other ways of deploying our app. We can deploy it using docker. For that there are 8 files we have to take a look into it.
-
In Dockerfile we chooser how our image will be and how to create the docker container. To run a file type "docker-compose -f Dockerfile.XXX up" and "docker-compose -f Dockerfile.XXX down"
-
Dockerfile.dev and docker-compose.dev: those files make our application run in a container during develop phase, we can access to the container through 4200 port.
-
Dockerfile.test and docker-compose.test: those files allow karma and e2e tests run inside container. To make this possible we had to configure ChromeHeadless.
-
Dockerfile.prod and docker-compose.prod: those files allow running the app on a server. An important feature is that the app run in a Nginx server web, unlike running our app in other server(github project). To make this possible we need other files
-
nginx.conf: this file allow us to configure the web server. It is a standard file that we need even we are not running it o a web server.
-
entrypoint.sh: this script is needed because we are going to deploy it on Heroku and we don’t know which port will be assigned so this allow us to communicate the container with the outere.
Another way of deploying the app is cloning the github repository and running it as localhost
8. Cross-cutting Concepts
8.1. Important modules
As we saw before, the architecture of the application is based on services, like printers, creators and another useful ones.
It is important to remember that for the application we are using npm, working (obviously) in Node.js, which is a package administrator that allows you to easily manage your resources.
-
Testing * To test our application, we are using karma testing, with the Jasmine framework.
Jasmine is an easy OpenSource framework that allows you to test JavaScript functionality developed in Angular. More information here:
8.2. Directory Structure and Required Files
This is the directory structure of the source folder:
├───app │ ├───card │ ├───dashboard │ ├───fragments │ │ ├───footer │ │ ├───header │ │ └───navbar │ ├───friends │ ├───login │ ├───login-popup │ ├───models │ ├───register │ └───services │ ├───creators │ ├───printers │ ├───query │ ├───sorters │ └───utils ├───assets │ ├───images │ ├───js │ │ └───libs │ └───types │ └───rdflib ├───coverage │ └───Chrome 73.0.3683 (Windows 10 0.0.0) └───environments
9. Design Decisions
-
First decision is that we are using Git as version control system instead of using mercurial, vsn, etc. and GitHub as source code management instead of using Bitbucket, this decision was imposed by the teachers of the subject.
-
The advantages of GitHub is that this plattform allows us to easily share and deploy our code.
-
One important feature of GitHub is the control versions. If we lose our code, we`ll be able to retrieve it easily.
-
We are using javascript family language(javascript, typescript, node.js, angular, etc) to build the application as the main programming language. As we understand, javascript is the easiest way to make a SOLID application.
-
The concrete language we are using is TypeScript. It is synchronized with Angular framework, and it`s usage is the same as if we were working with JavaScript. We are also using basic languages for the web such as html, css, etc as complements for the TypeScript code. When working with Angular, and you create a chat component, this tool will generate automatically a new folder with the component`s name, with a personalyzed css, ts and html.
-
Social linked data(SOLID) based application. A must decision we have to follow if we want to make a decentralized application. This means following several important constraints to build the application. One of them is storing date in PODS, so the user is the owner of their data.
-
Using a Service architecture that helps us to easily separate responsabilities. This services are used from the main app to obtain extra-functionality. There is a lot of different services, such as writers, sorters and queries services.
-
Following Angular components structure, so we can build a high cohesion and low coupling app. Our main component is FriendComponent and it represents the chat page where we can select chats and send messages to our Solid friends. We decided to have all chat functionality in the same page because we though it was better for the final user as it will be able to move in our app with just a few clicks. The most importan feature of Angular is that you can build Single Pages Applications.
-
Single pages applications means that the whole application works on a single page. This page updates itself dinamically, and allows you to exchange information between tha app parts easily and faster.
-
We use the known Karma-Jasmine framework for implementing unit test, a tool that allow us to easily test code on Angular, it helps us separating test code from the application code, it is also useful and easy to learn how to test. We though about using Mocha.js for tests but we had a few tests done yet so we decide to keep on with Karma-Jasmine.
-
At the beginning we used a simple text file to keep message info. Later on we decide to store messages in a ttl file. We stored message content and metadata in Turtle language (.ttl). The main reason to store data in rdf is that we can communicate with other applications that have the same ontology. It is useful to store the information in Turtle language because when trying to obtain pod`s information, you will be able to obtain it faster when working with Sparql queries.
-
As we store message data in ttl format, we need a tool for getting that ttl info. The way we recover that info is with Sparql queries, We create queries to access the Turtle files and get resources faster than using plain text.
-
We have a notifications service that works in every browser and allows us to send a notification to a user when he receives a message. We decide to use this notification service because we think it’s relevant in a real time chat application.
-
Group chat develop is in a alpha version, we have decided to store all the conversation in group creators/owner pod. The main difference between group and single chats is that in group chats messages store in thw group owner`s pod, but in single conversations, information stores in the mmessage writer`s pod.
-
When trying to store information in another user`s pod, you will not have edit permissions, so you need an acl (Access Control List) to control the permissions.
10. Quality Requirements
There are some important quality requirements that need to be considered when developing an application, specially when you develop a server-connected one.
The most importants are:
-
Velocity: When you are chatting with a friend, you need a fast application to make sure the conversation is fluid.
-
Security: When talking about a de-centralized chat, we ensure that our application is well-safe and we have control of our own informations.
-
Fluency: We need a optimized application.
-
Space: This is a forgotten one. This kind of application should be light and easy to convert to an executable file.
10.1. Quality Tree
Heres a map that allows us to easily get a high quality application:
10.2. Quality Scenarios
Scenario 1 - Security
When a user tries to access to a private conversation, it should´t be permitted.
Scenario 2 - Velocity and Fluency
When conversating with a friend, it is really logic that conversation should be fast.
Scenario 3 - Space
As we said, an application should be as lighter as possible, if a concrete use wants to create a portable version.
11. Risks and Technical Debts
A list of identified technical risks or technical debts, ordered by priority
“Risk management is project management for grown-ups” (Tim Lister, Atlantic Systems Guild.)
This should be your motto for systematic detection and evaluation of risks and technical debts in the architecture, which will be needed by management stakeholders (e.g. project managers, product owners) as part of the overall risk analysis and measurement planning.
List of risks and/or technical debts, probably including suggested measures to minimize, mitigate or avoid risks or reduce technical debts.
| Risks | Solutions |
|---|---|
Lack of knowledge and use of angularjs |
|
Lack of knowledge of solid |
|
Abandonment / lack of work of a member |
|
Lack of time to complete the project |
|
Misunderstood the requirements of the application |
|
Problems with git |
|
Privacy risks |
|
12. Glossary
Definition of most important terms every stakeholder should know to understand the documentation.
Order by rarety.
Only in english at the moment.
| Term | Definition |
|---|---|
Decentralized |
User is the owner of their data and not the application |
Git |
Version control system |
Inrupt |
SOLID enterprise |
MVC |
Model-View-Controler, software architecture |
PODS |
Personal Online Data Stores, used to save data |
RDF |
Resource Description Framework, standard model for data interchange in the web |
Scrum |
Agile methodology for working in group |
SOLID |
Social Linked Data |
Stakeholders |
People interested in a proyect |
Angular |
A framwork for working in typescript |
Turtle |
Is a syntax for expressing data in RDF |
Karma |
IDE for testing an application |
Jasmine |
Framework to easily test Angular JavaScript based applications |
Sparql |
Query language to obtain RDF graphs |
About arc42
arc42, the Template for documentation of software and system architecture.
By Dr. Gernot Starke, Dr. Peter Hruschka and contributors.
Template Revision: 7.0 EN (based on asciidoc), January 2017
© We acknowledge that this document uses material from the arc 42 architecture template, http://www.arc42.de. Created by Dr. Peter Hruschka & Dr. Gernot Starke.


Premier
Logout
Settings
About
Sidebar
View Documents
Change Your Settings
Logout
Document Type
Monthly Statments
Document listing with .
24
Account Notice
Example of possible document filter type.
3
Payments
Use @media queries to get the layout you want.
119
Monthly Statements
Statment
January 2013
Statment
Febuary 2013
Statment
March 2013


|
|
Of all these steps RStudio Cloud is the most important. If you run into issues with any of the installations, we can take a look at it during lunch break. We will not be needing them before lunch.
Download instructions
LA Police Payroll To be downloaded in csv format.
HIV Antibody Test Note that the data is in XPT format.
Mine Dogucu, Assistant Professor of Teaching, Department of Statistics, University of California
minedogucu.com
[@MineDogucu](http://www.twitter.com/MineDogucu)
This workshop will be TA’ed by Mary Ryan [@Marym_Ryan](https://twitter.com/Marym_Ryan).
The source code is available here
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 Generic License.


Platzi Game
Player 1
100%
Play
Player 2
100%
Play
Hecho por @JuanFe98
The winner is
Player 1
Play Again


MATTHEW_ONG
Memory Lane
Current Address:
Urbana Champaign
Join Memory Lane on:
09/29/15
Missing Frouble.
(
edit
)
Missing Frouble.
Missing Frouble


TM3 partners with a number of leading companies to bring you the most robust software, made to cover every aspect of your day-to-day practice operations. From financial management integrations to exercise prescriber tools, TM3 leverages its strategic alliances to provide you with a complete software experience and yield the best results for its client base.
Australian integrations include Medicare/DVA amd HICAPS.


Room 203, Wenxin Building, Optics Valley Core Center, Optics Valley Avenue Wuhan, China
© 2011-2013 Wuhan Cazool Technology Co.,Ltd ICP:E14013274


Gujarat High Court Case Information System Print CR.MA/180520/2004 5/ 5 JUDGMENT IN THE HIGH COURT OF GUJARAT AT AHMEDABAD CRIMINAL MISC.APPLICATION No. 1805 of 2004 For Approval and Signature: HONOURABLE MR.JUSTICE R.P.DHOLAKIA : ======================================================= BALLARPUR INDUSTRIES LTD., & 1 - Applicant(s) Versus MUKESH SIDDHESHWAR SWARUP SHUKLA & 1 - Respondent(s) ======================================================= Appearance : MR JR NANAVATI, SR. ADVOCATE FOR MR AR THACKER for Applicants, MR KH BAXI for Respondent(s) : 1, MR AJ DESAI APP for Respondent(s) : 2, ======================================================= CORAM : HONOURABLE MR.JUSTICE R.P.DHOLAKIA Date : 19/09/2008 ORAL JUDGMENT
Heard learned Senior Advocate for the applicants, Mr.J.R. Nanavati for Mr.A.R. Thacker, learned counsel for the respondent no.1, Mr.K.H. Baxi and Learned Additional Public Prosecutor for the respondent no.2, Mr.A.J. Desai.
Against the Ballarpur Industries Ltd. and 10 others, complaint has been filed by the complainant before the Court of Learned Judicial Magistrate, First Class, Lalpur, District : Jamnagar on 07.10.1997 under Sections 43 and 44 of the Water (Prevention & Control of Pollution) Act, 1974 for the alleged breach of Sections 24 and 25 of the Act, which came to be registered as Criminal Case No.472/1997. The said complaint was filed by one M.S. Shukla, Deputy Environmental Engineer. In the said complaint, process was issued against all accused.
Against the same, the applicant-Company has preferred this application under Section 482 of the Code of Criminal Procedure for quashing the Criminal Case pending before the Court of Learned Learned Judicial Magistrate, First Class, Lalpur.
It has been mainly argued by the Learned Senior Advocate, Mr.Nanavati that powers for filing the complaint delegated by the Chairman to the said person are not just, legal and proper, for which, he has placed reliance upon the decision reported in Vol. XLIII (2) GLR 1580, more particularly, in para 10, which reads as under:-
?SEven if, sec.49(1)(a) and sec.11-A are read together, it can not be said that the legislature intended that the Chairman of a Board can exercise all powers and perform all duties from time to time without specific delegation made to him by the Board. Sec.49(1)(a) is clear enough, from which, it can be said that the complaint can be made firstly by a Board and secondly by any officer authorized in this behalf by the Board. Thus, filing of a complaint under this section can be made by the Board or by any officer authorized by the Board in this behalf. No specific authorization by the Board has been made under resolution dated 27-3-1984 to the Chairman for filing a complaint against any person committing offences under the Act. All that he is authorized under this resolution is power to sanction prosecution by the Chairman of the Board. Power to sanction prosecution is altogether different from power and authority to file complaint. Under this resolution, it is nowhere mentioned that the Chairman of the Board himself can file a complaint. If, the Chairman himself does not possess power to file complaint under a specific resolution from the Board, it is difficult to understand how he can delegate such power to another officer of the Board. In the absence of specific power delegated by the Board to the Chairman to file complaint or authorizing the Chairman to delegate power to file complaint to some other officer of the Board, no officer can file complaint, and in this view of the matter, the order dated 18-8-1989 Ex.31 can not be said to be valid delegation of power by the Chairman in favour of the Assistant Environmental Engineer of the Board. Even, under sec.11-A of the Act, the Chairman of the Board shall exercise such powers and perform such duties as may be prescribed or as may from time to time be delegated to him by the Board. Thus, without delegation of powers by the Board, the Chairman can not exercise power to delegate the authority to file complaint to some other person. It is not within the general powers of the Chairman of the Board to exercise power of delegation to some other officer of the Board to file complaint.
It can be said that cognizance of an offence can be taken by a Court, firstly on a complaint filed by the Board, and secondly by an officer authorized by the Board to file a complaint. Since, there is no authorization by the Board in favour of the complainant to file a complaint, the cognizance taken by the learned Magistrate was illegal, as a consequence of which, the entire trial and exercise in appeal becomes illegal, inasmuch as, the prosecution structure collapsed for want of a complaint filed by a person duly authorized by the Board.??
Mr.Nanavati has also taken me through the minutes of the 43 meeting of the Board, copy of which is annexed with the application as Annexure-B at page no.17 and argued that the powers are only given to the Chairman. It is also argued that as held by this Hon'ble Court, no such powers are delegated to the complainant to file such complaint and it has been delegated to the Chairman. Thus, the present applicants are protected in view of the above referred judgment. It is, therefore, argued that the present application may be allowed and the complaint as well as proceedings issued therein may be quashed.
I have gone through the application, complaint annexed with the application and the judgment relied upon by the learned counsel for the applicants. I have also considered the arguments advanced by the learned counsel for the applicant. Looking to the facts and circumstances of the case and keeping in mind the ratio laid down in the judgment relied upon by the learned counsel for the applicants, I am of the opinion that complaint as well as process issued therein are required to be quashed and set aside.
It is required to be noted that the complaint has been filed against the Company, its Directors as well as office bearers numbering 11. However, out of them, though the accused no.1-Company and its Deputy Manager have filed the present application for quashing of the complaint, benefit is also required to be given to all other accused of the said complaint.
In view of the aforesaid facts and circumstances of the case, the present application is allowed. Criminal Case No.472/1997 pending in the Court of Learned Judicial Magistrate, First Class, Lalpur, District : Jamnagar and the process issued therein are hereby quashed and set aside. Rule made absolute to the aforesaid extent.
(R.P.DHOLAKIA, J) /patil Top


ObserverPriority
public class ObserverPriority
This class provides standardized observer priority.
It is easy to extended this class to add your own priorities
Example Usage
extension ObserverPriority {
public static let myPriority: UInt8 = 42
}
Note
ObserverPriority must be of typeUInt8
-
Undocumented
Declaration
Swift
public static let lowest: UInt8
-
Undocumented
Declaration
Swift
public static let low: UInt8
-
Undocumented
Declaration
Swift
public static let normal: UInt8
-
Undocumented
Declaration
Swift
public static let high: UInt8
-
Undocumented
Declaration
Swift
public static let highest: UInt8


Book Review Store
menu
search
Home
About
Welcome
!
dehaze
My Wishlist
My Activity
Logout
Rating:
ISBN:
Publish date:
favorite_border
User Reviews:
Review the Book:
Rate the Book:
grade
grade
grade
grade
grade
Enter the review here.. (limited to 500 characters)
Post Review
send


Methods
Public Instance methods
Alias for localize
This method is also aliased as
l
[ show source ]
# File vendor/rails/actionpack/lib/action_controller/translation.rb, line 8 8: def localize(*args) 9: I18n.localize *args 10: end
Alias for translate
This method is also aliased as
t
[ show source ]
# File vendor/rails/actionpack/lib/action_controller/translation.rb, line 3 3: def translate(*args) 4: I18n.translate *args 5: end


true
is the tree is animated, or false
otherwise.
A map with all behaviors that were defined for this widget. The key is the name of the behavior, the value is the callback function that is invoked when the behavior is called.
true
if the content of dynamically loaded nodes is cached for the next time the node is
expanded, or false
to always fetch the content from the server.
true
is this widget is disabled, or false
otherwise.
Defines parent-child relationship when a node is dragged.
Optional scope for the dragging and dropping, passed to JQuery UI.
true
if nodes are draggable, or false
otherwise.
When enabled, the copy of the selected nodes can be dropped from a tree to another tree using Shift key.
true
if nodes are droppable, or false
otherwise.
true
if the content of nodes is loaded dynamically as needed, or false
otherwise.
Event for the context menu.
true
if filtering is enabeld, false
otherwise.
Mode for filtering.
ID of the form to use for AJAX requests.
true
if selected nodes are highlighted, or false
otherwise.
The client-side ID of the widget, with all parent naming containers, such as
myForm:myWidget
. This is also the ID of the container HTML element for this widget. In case the widget needs
multiple container elements (such as Paginator), this may also be an array if IDs.
When enabled, the selected multiple nodes can be dragged from a tree to another tree.
Node type of nodes for which the context menu is available.
Callback that is invoked when a node is
clicked. If it returns false
, the click on the node is ignored.
Whether toggling a node checkbox is propagated downwards.
Whether toggling a node checkbox is propagated upwards.
How the node of this tree can be selected, if selection is enabled at all.
The name of the widget variables of this widget. The widget variable can be used to
access a widget instance by calling PF("myWidgetVar")
.
Generated using TypeDoc
The configuration for the BaseTree widget. You can access this configuration via BaseWidget.cfg. Please note that this configuration is usually meant to be read-only and should not be modified.


{% extends "static/templates/base.html" %} {% block title %}Home{% endblock %} {% block content %}
Here's a place to help you diagnose them, all you need is a garbage collector log, and we'll help you make sense of the data it contains
Learn more »


Test 1
You can pan around this map, and the center is updated.
When you edit the lat/lng the map center is updated
Lat:
Lng:


Developed an e-commerce responsive web application from scratch with React, Next.js and Node.js. Developed a product picker, cart, checkout and member portal
At Scotiabank I worked with Big Data and ML tech like Hadoop, Spark, Hive, SciKit-Learn and Flask to build a cutomer churn model, aggregate data and explore and visualize the data
As a Data Engineer at Groupby Inc, I constructed from scratch a data pipeline for an analytics dashboard. I extracted, cleansed, transformed, aggregated and loaded terabytes of e-commerce data using Node.js/Express.js, Google Platform's Kubernetes, BigQuery, Pub/Sub and MySql. It is being used by clients such as CVS Pharmacy, Sears and Urban Outfitters.
At Ingle International I developed from scratch a responsive, enterprise-level health application in a team of 5 with React, Redux and PHP's Laravel. Some Features I developed were searches, surveys, forms and various other modular components.
At Tiko 3D, my main task was to create a Chatbot to automate the customer service. It was built with the Wit.ai NLP machine learning API, Express.js, React and MongoDB. I also developed a web scraper to train the chatbot, a Mass Uploader for Zendesk and a Selenium package to test the company's Web App.
Are We There yet is a native android app which allows users to return the driving distance between two locations using the Google Maps API. I hope to release the app to the Play Store soon.
Studdy Buddy is a work in progress. The final product will help students meet studdy partners to complete assignments together.


Personal Life
I was born in Cuba on 1992. I discovered my love for coding as I was 17 and didn't stop since. Studied Computer Science back in my country for three years. Came to Berlin just to start again. Actually studying at the Technical University Berlin.
Professional Life
One year Scholarship at Devugees and a lot of online courses like CodeSchool or FreeCodeCamp. Making the Path to become a Web Developer. Always looking for a challenge to do.


Project Ryu: Loudspeaker Electrical Model
T/S Params
Enclosure
Model
Impedance
Loudspeaker T/S Parameters
Manufacturer
Model
Resonance Frequency, Fs [Hz]
Voice Coil DC Resistance, Re [Ω]
Voice Coil Inductance, Le [mH]
Total Quality Factor, Qts
Electrical Quality Factor, Qes
Mechanical Quality Factor, Qms
Motor Force Factor, Bl [Tm]
Equivalent Stiffness Air Volume, Vas [L]
Moving Mass, Mms [g]
Compliance, Cms [mm/N]
Mechanical Resistance, Rms [kg/s]
Piston Surface, SD [m^2]
Enclosure Parameters
Enclosure Type
None
Closed
Vented
Enclosure Volume, Vb [L]
Enclosure Loses, Ql
Vent Diameter, Dvent [mm]
For rectangular ports, use diameter of a disc with the same surface
Vent Length, Lvent [mm]
Model Result
Re [Ω]:
-
Le [mH]:
-
Lces [mH]:
-
Cmes [uF]:
-
Res [Ω]:
-
Lceb [mH]:
-
Reb [Ω]:
-
Cmep [uF]:
-
Rep [Ω]:
-
Impedance Curve


Physics Demonstrator UI
Demanded
°
Kts
Actual
000.00
°
00.00
m/s
00.00.00.N, 000.00.00.W
Time
01:00:00
/
[stopped]
Diagnostics
Select scenario
Please choose a scenario:
[please choose]
1a. Drive vessel
1b. Reading bearings
1c. Resolving ambiguity
2c. Full Self-noise
Scenario controls
Show Target


Fits PE and RLC data to one of a four published PE models. Simulates incident irradiance as a function of time and space. Calculates phytoplankton production by transposing modeled PE or RLC data to a water column with a user-defined theoretical in-situ irradiance field.
| Version: | 1.0 |
| Depends: | insol, FME |
| Published: | 2015-02-14 |
| Author: | Greg M. Silsbe, Sairah Y. Malkin |
| Maintainer: | Greg Silsbe <gsilsbe at gmail.com> |
| License: | GPL-2 |
| NeedsCompilation: | no |
| CRAN checks: | phytotools results |
| Reference manual: | phytotools.pdf |
| Package source: | phytotools_1.0.tar.gz |
| Windows binaries: | r-devel: phytotools_1.0.zip, r-release: phytotools_1.0.zip, r-oldrel: phytotools_1.0.zip |
| OS X binaries: | r-release: phytotools_1.0.tgz, r-oldrel: phytotools_1.0.tgz |
Please use the canonical form https://CRAN.R-project.org/package=phytotools to link to this page.


By Ryan M. Hoffman | 2016-11-21
Android Studio Shortcuts
If you have used Android Studio for even a short time I’m sure you have found some shortcuts and hot keys to speed up your coding and keep your hands on the keyboard where they belong! I’m going to run through some of the shortcuts I find most useful. Android Studio is built by Google, but it is based on Jetbrains Intellij Community Edition Java IDE. This means that all of the Intellij shortcut keys work on Android Studio, but Google have added a few of their own. Let’s jump into some of the best ones.
Searching For A Shortcut
Stop me if this has happened to you before. You read an awesome tutorial on shortcuts and hot keys in Android Studio and found a few that looked really useful, but when you sit down and start coding you can’t remember what they were. Fortunately someone thought of this and made several several search functions.
Search everywhere:
Shift Shift (Windows, Linux, Mac) This searches literally everywhere. It can even search outside of the scope of your project if you want it to (every file on your computer). Thankfully it groups what it finds into categories, with the most recent files first.
Search for commands:
Command + Shift + A (Mac) Control + Shift + A (Windows, Linux) This searches for any command. If you know there is a way to jump to the next error in your code but you can’t remember what it is, just use this command and start typing “error” and it will intelligently find it. This works for any command. If you only want to memorize one shortcut, this is the one.

Jump to Class
Command + O (Mac) Control + N (Windows, Linux)
Jump to File
Command + Shift + O (Mac) Control + Shift + N (Windows, Linux)
Jump to Method
Control + Up/Down (Mac) Alt + Up/Down (Windows, Linux) Up is the previous method, down is the next method.
Editing Code
This is the one we try to spend the most time on, and even though searching for the correct command is easy with the shortcut above, it is still quicker to memorize these shortcuts and add them to our workflow. These will really help you get past the editor and focus only on the editing.
Auto-Completion
Tab (Mac, Windows, Linux) Enter (Mac, Windows, Linux)
Comments
Single Line Comment Command + / (Mac) Control + / (Windows, Linux) Multi Line Comment Command + Alt + / (Mac) Control + Shift + / (Windows, Linux)
Show Parameters
Command + p (Mac) Control + p (Windows, Linux) This one is useful if you can’t remember what parameters a method takes.
Refactoring
Renaming a variable/method/class etc. Shift + F6 (Mac) Control + F6 (Windows, Linux)
Intelligent Code Generation
Command + N (Mac) Alt + Insert (Windows, Linux)
Live Templates
There are dozens of these available by default, and the great thing about Android Studio is that you have the freedom to create more if you wish. If you don’t know what live templates are, they are boilerplate sections of code that gets automatically inserted for you. All you have to do is tab through to fill in the variable values.
A commonly used one is “Toast”. You type “Toast” and hit Tab and it automatically gives you this:
Toast.makeText(MainActivity.this, "", Toast.LENGTH_SHORT).show();
If you hit Tab a second time it moves the cursor over to the quotation marks so you can type your message, and if you hit Tab one more time it moves your cursor to the end of the line.
Another common one is to type “fori” and hit Tab. That gives you this:
for(i = 0; i < ; i++){
}
Of course tabbing through allows you to modify the variable name, value, loop length, and finally it drops you inside the curly brackets to write the code to be executed.
As I mentioned there are dozens more and you can create your own. To find all the live templates included just search everywhere with Shift Shift and type “Live Templates”.
Conclusion
Thank you for reading this. I hope some of these tricks will help you become a better and faster developer. If you want the full and overwhelming list of shortcuts for Android Studio you can check out the list here.
As always, please follow me on twitter @hoffmanryan1 and on medium @rmhcompaines.


Overview
Runs LessPHP for a platform and a theme and outputs the compiled CSS. It only allows to preview the theme because
the file is not saved on the server.
Request Arguments
| Name |
Type |
Description |
Required |
| platform |
String |
The theme platform - /themes/clients/***PLATFORM***/themeName/. Accepted values are 'base' and 'portal'. |
No. (defaults to base) |
| themeName |
String |
The theme name - /themes/clients/platform/***THEMENAME***/. |
No. (defaults to default) |
| min |
Boolean |
Whether or not to minify the css |
No. (defaults to false) |
Request
{
platform: 'portal',
themeName: 'default',
min: false
}
Response Arguments
Response
Content-type: text/css
.someClass {
any-property: any-value;
}
Change Log
| Version |
Change |
|
v10
|
Added /css/preview GET endpoint.
|


That should not have happened. Please check if the HTML file "./html/inline-html" on server side was successfully generated.


pushpullfork.com
view presentation (with live links) at kshaffer.github.io/edtechalgorithms
fork presentation at github.com/kshaffer/edtechalgorithms
pushpullfork.com
view presentation (with live links) at kshaffer.github.io/edtechalgorithms
fork presentation at github.com/kshaffer/edtechalgorithms