Due Monday, November 20th, 2017 @ 11:59 PM
IMPORTANT INFO - PLEASE READ
- You are allowed to complete Project 4 in partners. Please note - you must create a new Bitbucket repo if you are choosing to work with a partner!
- You MUST test this on the hive machines! The code will probably no compile if you try to use it locally
- Update 11/12/17 @ 3:00 PM - The Makefile and the make speedup tests have been updated. It should no longer be necessary to run make check again after running make speedup. Additonally, make speedup will now check for correctness. This check will be VERY slow, so if you are confident in your correctness, feel free to skip it. It will occur after telling you your speedup amount.
- Update 11/12/17 @ 4:45 PM - Updated issue in the Makefile caused by previous update.
- Update 11/14/17 @ 6:30 PM - Updated make speedup to correctly test correctness with floating point rounding error
- Update 11/15/17 @ 9:20 AM - Gave make speedup a larger error bound for large values
Overview
In this project you will be implementing a slower version of numpy. Your version of numpy, numc (cause, you know, this is CS61C) will be much slower than numpy, but much faster than the naive version, dumbpy. It will compile into code that can be run in Python3, and will feel very similar to numpy, however it will not have all of the fancy algorithms and opitmizations of numpy. You will be given the naive code and you will need to optimize it to run much faster. Do not expect it to be as good as numpy, but you should expect a very large speedup compared to the naive solution.
FAQ
As questions are asked, this will be updated. If you ask a question that is answered in the spec or in the FAQ, the staff reserves the right to ignore your question. It is up to you to stay up to date on the FAQ section. This FAQ will also be updated on Piazza.
I added SIMD/unrolling/pragma, why did my code get slower? - Adding these things generally helps speedup your code, but sometimes they add more overhead than they do speed up. If you are running into this issue, double check your implementation, and maybe get rid of it and try something else. You can always come back and put it in later if you think it will help then.
How long should it take to run my code? - The inital code that we give you, with no changes should take about 12 minutes to run make speedup. If you're optimization is taking longer than 15 minutes, chances are it isn't working and you should try something else.
When I run make, it tells me No rule to make target, what should I do? - You must run all make commands from the root directory of the project. It will not work in any subdirectory
There is a warning saying that it cannot uninstall things and/or that it cannot find a conda environment, what should I do? - Try running make speedup once to install the conda virtual environment if you haven't already. Once you have installed the environment, you can ignore any errors along these lines.
Are we allowed to import and use packages that we have not talked about in class? - If they are already installed on the hive machines and the code will compile without adding anything new, please feel free to use the package. Please note that that the staff reserves the right to not help you debug if you use these packages.
The measured speedup from running make speedup is much greater than when I run make check, which do I trust? The timing is done differently, make check is unreliable at measuring speed. make check will let you determine the correctness of your matrix operations. The speedup measured by make speedup will determine your grade, assuming that make check determines that your implementations are correct.
Checking for correctness with make testAll and then make test2 is slow, can I test correctness on smaller matrices first? Yes. If you look in testing/shared.h, you'll see two arrays called row_numbers and col_numbers. During testing started by make testAll, random matrices are generated in the dimensions specified by those arrays. For example, matrices of size (mxn) will be generated if row_numbers[i] == m and col_numbers[i] == n for some i. What make check does is perform all the matrix operations possible (based on dimensions matching appropriately) on randomly generated matrices of the specified dimensions. Note, as a cautionary example, that this means that if you don't specify creation of any (mx1) matrices, no outer products will be calculated, which could lead you to believe that your outer_product implementation is correct even if it isn't.
Setting Up
Getting the file
The files are hosted on github. You will need to set up your own repository. Once you have gotten into the folder you want do the project in, run the following:
git init # Only do this if you haven't made this a git repo yet git remote add skeleton https://github.com/61c-teach/fa17-proj3-starter.git git pull skeleton master # Pull the files to start working
Setting up your repo
If you are working alone, you need to do this, but just do it for only your login. You will need to create a new Bitbucket repository for you and your partner. This should be created in the form: proj3-(your login)-(partner login) (example: proj3-aaa-bbb).
In order to copy over your files into your new directory, run the following steps:
cd proj3-XX # Go inside the project directory git remote add origin<EMAIL_ADDRESS>git push origin master
Getting Started
The code you will be modifying for this project is all in the performance directory. You can modify both matrix.c and matrix.h. You may NOT do the following:
- Modify function signatures
- Use preprocessor macros
- Remove the shape struct from the definition of the matrix struct
You are allowed to:
- Change the struct definition of the matrix as long as it continues to include a shape struct called dim
- Use SIMD and OpenMP to make it run faster. You will need to import the correct headers if you do
- Add functions to the header and body files
The Assignment
Your job is to make the code in the performance folder run as fast as you can. Specifically you will change performance/matrix.c and performance/matrix.h. The breakdowns for what speeds give what grades are given at the end of this spec. Please use any and all tricks you know to make it run faster. You may not break the rules that are listed above and the functionality of everything must be the same as the naive version.
To test that you are functionally correct, run the following:
make check
After running this once, you can do a faster test in the future with:
make test2
This command will give you a speedup, but that is not the speedup that your grade is based on, it is only a preliminary one.
Once you have code that is functionally the same, you can check the speedup amount by running:
make speedup
Do note that this can be pretty slow. It does test your speedup first, so you can kill the process after if you don't wnat to wait for the naive version to run.
Tips and Tricks
We recommend you start out by adding loop unrolling and SIMD instructions to your code first. Once you have done that, try out OpenMP. Finally, look at cache blocking for some added performance increase
In addition to performing the tricks discussed above, we recommend you look at the way that the data is stored in the struct. You are welcome to change the struct definition, and we encourage it. However, if you do change the struct, you will need to change every function in the matrix.c file to work with the new struct. If you do not, you will probably fail some of the tests. If you are ever having seg faults, please make sure that the functionality of the matrix is the same as the naive version.
Running the code you wrote in Python3
The code you are writing does get compiled into Python3 code that can be run. Please note that this code is pretty buggy, so please bear with it. If you want to try out the code yourself, you will need to step into the virtual environment we created for this project. The following commands only work after you have run make speedup at least once. To do so, run:
source activate venv
Once you are in your virtual environment, you will need to install the packages. Run this command in the main directory of your project:
pip install .
Now your package is installed and can be imported. Checkout testing/speedup.py for information on how to use the packages.
When you are done, you can leave the virtual environment by running:
source deactivate
Extra Credit
The extra credit for this project is as follows: you will continue to use your numc code to speedup a neural net. There will be two changes for this extra credit from the rest of the project. The first is that you may modify the python/numc.c file that acts a wrapper for the python file. You may not modify the struct declaration inside of this file, but you may modify the implemention of the methods and add more methods as you see fit. Do note that you may not modify the neural net (nn/letters_neural_net.py). The second is that the grading will be on the accuracy of your neural net, not on a speedup. You can see your accuracy after you run the makecommand:
make ec
You will be graded on the accuracy of the Validation Error. If you get higher accuracy than the staff solution, you will get 1 point of extra credit. From here it will be a competion between students. Whoever has the highest accuracy will get 5 points of extra credit in total (4 for winning and 1 for probably beating the staff solution). Second place will recieve 4 points, and third will recieve 3 points.
You will need to fetch the new files to do this, you can do this by pulling from the github repo:
git pull skeleton ec
Finally, you will need to download the data to run the neural net on. You can download it here
To submit, submit performance/matrix.h, performance/matrix.c, and python/numc.c. You must submit separately to enter the contest and be eligible for extra credit. Submit with:
submit proj3-ec
Submission
There are two steps required to submit proj3-2. Failure to perform both steps will result in loss of credit:
First, you must submit using the standard unix submit program on the instructional servers. This assumes that you followed the earlier instructions and did all of your work inside of your git repository. To submit, follow these instructions after logging into your -XX class account:
cd ~/proj3-XX # Or where your shared git repo is submit proj3
Once you type submit proj3, follow the prompts generated by the submission system. It will tell you when your submission has been successful and you can confirm this by looking at the output of glookup -t.
Additionally, you must submit proj3 to your Bitbucket repository:
cd ~/proj3-XXX # Or where your shared git repo is git add -u git commit -m "project 3 submission" # The commit message doesn't have to match exactly. git tag "proj3-sub" # The tag MUST be "proj3-sub". Failure to do so will result in loss of credit. git push origin proj3-sub # This tells git to push the commit tagged proj3-sub
Resubmitting
If you need to re-submit, you can follow the same set of steps that you would if you were submitting for the first time, but you will need to use the -f flag to tag and push to Bitbucket:
# Do everything as above until you get to tagging git tag -f "proj3-sub" git push -f origin proj3-sub
Note that in general, force pushes should be used with caution. They will overwrite your remote repository with information from your local copy. As long as you have not damaged your local copy in any way, this will be fine.
Deliverables
These should come from your performance directory
matrix.h
matrix.c
If you submit anything else, it will be ignored. Additionally, if your code does not compile, it will recieve a 0. It is on you to make sure it compiles!
Grading
This project will be graded based on the amount of speedup that you get. You will not be given an autograder for this project because the test suite that your grade is based on is given to you. When you submit, we will compile your code and run it the same way that you run it when you use make speedup. Your grade will be based on the following table:
| Speed Up Amount | Score (as percentage) |
| <= 1x | 0 |
| ~5x | 50 |
| ~10x | 75 |
| ~15x | 90 |
| >= 20x | 100 |
Note that the inital speedups are worth the most. Later speedups will be worth less.
You should test on the hive machines, but keep in mind that others will also be doing so, and when many processes are running at once, you may not see an accurate reflection of how much you've sped up the code. Unfortunately it's difficult to work around the fact that there are orders of magnitude more students than Hive machines. When we grade your submissions we will ensure that no one else is using the hive machine. Keep in mind that your code may perform (modestly) better during grading. To figure out what machine will be best to use to test, checkout hivemind
Good luck!


Working with streaming IO
Akka Streams provides a way of handling File IO and TCP connections with Streams. While the general approach is very similar to the Actor based TCP handling using Akka IO, by using Akka Streams you are freed of having to manually react to back-pressure signals, as the library does it transparently for you.
Note
If you are not familiar with Akka Streams basic concepts, like Source, Sink and Flow, please refer to the Streams section of the document. Also higher level APIs like bind are used in Akka HTTP too. So you may get some hints from the Akka HTTP introduction.
Streaming TCP
Accepting connections: Echo Server
In order to implement a simple EchoServer we bind to a given address, which returns a Source<IncomingConnection, CompletionStage<ServerBinding>>, which will emit an IncomingConnection element for each new connection that the Server should handle:
// IncomingConnection and ServerBinding imported from Tcp
final Source<IncomingConnection, CompletionStage<ServerBinding>> connections =
Tcp.get(system).bind("<IP_ADDRESS>", 8889);
Next, we simply handle each incoming connection using a Flow which will be used as the processing stage to handle and emit ByteStrings from and to the TCP Socket. Since one ByteString does not have to necessarily correspond to exactly one line of text (the client might be sending the line in chunks) we use the delimiter helper Flow from akka.stream.javadsl.Framing to chunk the inputs up into actual lines of text. The last boolean argument indicates that we require an explicit line ending even for the last message before the connection is closed. In this example we simply add exclamation marks to each incoming text message and push it through the flow:
connections.runForeach(connection -> {
System.out.println("New connection from: " + connection.remoteAddress());
final Flow<ByteString, ByteString, NotUsed> echo = Flow.of(ByteString.class)
.via(Framing.delimiter(ByteString.fromString("\n"), 256, FramingTruncation.DISALLOW))
.map(ByteString::utf8String)
.map(s -> s + "!!!\n")
.map(ByteString::fromString);
connection.handleWith(echo, mat);
}, mat);
Notice that while most building blocks in Akka Streams are reusable and freely shareable, this is not the case for the incoming connection Flow, since it directly corresponds to an existing, already accepted connection its handling can only ever be materialized once.
Closing connections is possible by cancelling the incoming connection Flow from your server logic (e.g. by connecting its downstream to a Sink.cancelled() and its upstream to a Source.empty()). It is also possible to shut down the server's socket by cancelling the IncomingConnection source connections.
We can then test the TCP server by sending data to the TCP Socket using netcat:
$ echo -n "Hello World" | netcat <IP_ADDRESS> 8889
Hello World!!!
Connecting: REPL Client
In this example we implement a rather naive Read Evaluate Print Loop client over TCP. Let's say we know a server has exposed a simple command line interface over TCP, and would like to interact with it using Akka Streams over TCP. To open an outgoing connection socket we use the outgoingConnection method:
final Flow<ByteString, ByteString, CompletionStage<OutgoingConnection>> connection =
Tcp.get(system).outgoingConnection("<IP_ADDRESS>", 8889);
final Flow<String, ByteString, NotUsed> replParser =
Flow.<String>create()
.takeWhile(elem -> !elem.equals("q"))
.concat(Source.single("BYE")) // will run after the original flow completes
.map(elem -> ByteString.fromString(elem + "\n"));
final Flow<ByteString, ByteString, NotUsed> repl = Flow.of(ByteString.class)
.via(Framing.delimiter(ByteString.fromString("\n"), 256, FramingTruncation.DISALLOW))
.map(ByteString::utf8String)
.map(text -> {System.out.println("Server: " + text); return "next";})
.map(elem -> readLine("> "))
.via(replParser);
connection.join(repl).run(mat);
The repl flow we use to handle the server interaction first prints the servers response, then awaits on input from the command line (this blocking call is used here just for the sake of simplicity) and converts it to a ByteString which is then sent over the wire to the server. Then we simply connect the TCP pipeline to this processing stage–at this point it will be materialized and start processing data once the server responds with an initial message.
A resilient REPL client would be more sophisticated than this, for example it should split out the input reading into a separate mapAsync step and have a way to let the server write more data than one ByteString chunk at any given time, these improvements however are left as exercise for the reader.
Avoiding deadlocks and liveness issues in back-pressured cycles
When writing such end-to-end back-pressured systems you may sometimes end up in a situation of a loop, in which either side is waiting for the other one to start the conversation. One does not need to look far to find examples of such back-pressure loops. In the two examples shown previously, we always assumed that the side we are connecting to would start the conversation, which effectively means both sides are back-pressured and can not get the conversation started. There are multiple ways of dealing with this which are explained in depth in Graph cycles, liveness and deadlocks, however in client-server scenarios it is often the simplest to make either side simply send an initial message.
Note
In case of back-pressured cycles (which can occur even between different systems) sometimes you have to decide which of the sides has start the conversation in order to kick it off. This can be often done by injecting an initial message from one of the sides–a conversation starter.
To break this back-pressure cycle we need to inject some initial message, a "conversation starter". First, we need to decide which side of the connection should remain passive and which active. Thankfully in most situations finding the right spot to start the conversation is rather simple, as it often is inherent to the protocol we are trying to implement using Streams. In chat-like applications, which our examples resemble, it makes sense to make the Server initiate the conversation by emitting a "hello" message:
connections.runForeach(connection -> {
// server logic, parses incoming commands
final Flow<String, String, NotUsed> commandParser =
Flow.<String>create()
.takeWhile(elem -> !elem.equals("BYE"))
.map(elem -> elem + "!");
final String welcomeMsg = "Welcome to: " + connection.localAddress() +
" you are: " + connection.remoteAddress() + "!";
final Source<String, NotUsed> welcome = Source.single(welcomeMsg);
final Flow<ByteString, ByteString, NotUsed> serverLogic =
Flow.of(ByteString.class)
.via(Framing.delimiter(ByteString.fromString("\n"), 256, FramingTruncation.DISALLOW))
.map(ByteString::utf8String)
.via(commandParser)
.merge(welcome)
.map(s -> s + "\n")
.map(ByteString::fromString);
connection.handleWith(serverLogic, mat);
}, mat);
To emit the initial message we merge a Source with a single element, after the command processing but before the framing and transformation to ByteStrings this way we do not have to repeat such logic.
In this example both client and server may need to close the stream based on a parsed command - BYE in the case of the server, and q in the case of the client. This is implemented by using a custom GraphStage which completes the stream once it encounters such command.
Streaming File IO
Akka Streams provide simple Sources and Sinks that can work with ByteString instances to perform IO operations on files.
Streaming data from a file is as easy as creating a FileIO.fromPath given a target path, and an optional chunkSize which determines the buffer size determined as one "element" in such stream:
final Path file = Paths.get("example.csv");
Sink<ByteString, CompletionStage<Done>> printlnSink =
Sink.<ByteString> foreach(chunk -> System.out.println(chunk.utf8String()));
CompletionStage<IOResult> ioResult =
FileIO.fromPath(file)
.to(printlnSink)
.run(mat);
Please note that these processing stages are backed by Actors and by default are configured to run on a pre-configured threadpool-backed dispatcher dedicated for File IO. This is very important as it isolates the blocking file IO operations from the rest of the ActorSystem allowing each dispatcher to be utilised in the most efficient way. If you want to configure a custom dispatcher for file IO operations globally, you can do so by changing the akka.stream.blocking-io-dispatcher, or for a specific stage by specifying a custom Dispatcher in code, like this:
FileIO.toPath(file)
.withAttributes(ActorAttributes.dispatcher("custom-blocking-io-dispatcher"));
Contents


public class CompetitionParameters
extends java.lang.Object
| Modifier and Type | Field and Description |
|---|---|
static int |
ACTION_TIME
Milliseconds allowed per controller action.
|
static int |
ACTION_TIME_DISQ
Milliseconds for controller disqualification, if it returns an action after this time.
|
static int |
DELAY
Delay for human play.
|
static java.lang.String |
IMG_PATH
Path to sprite images.
|
static int |
INITIALIZATION_TIME
Milliseconds allowed for controller initialization.
|
static int |
LONG_DELAY
Longer delay for human play.
|
static int |
MAX_TIMESTEPS
Max time a game can run
|
static long |
WARMUP_ADV |
static long |
WARMUP_CP |
static long |
WARMUP_TIME
Java Warm-up time before starting the game.
|
| Constructor and Description |
|---|
CompetitionParameters() |
public static int ACTION_TIME
public static int ACTION_TIME_DISQ
public static int INITIALIZATION_TIME
public static java.lang.String IMG_PATH
public static int DELAY
public static int LONG_DELAY
public static int MAX_TIMESTEPS
public static final long WARMUP_TIME
public static final long WARMUP_CP
public static final long WARMUP_ADV


The ControlSet
structure provides facilities for managing sets
of controls, with associated information, by name.
Synopsis
signature CONTROL_SET
structure ControlSet : CONTROL_SET
Interface
type 'a control = 'a Controls.control
type ('a, 'b) control_set
val new : unit -> ('a, 'b) control_set
val member : (('a, 'b) control_set * Atom.atom) -> bool
val find : (('a, 'b) control_set * Atom.atom)
-> {ctl : 'a control, info : 'b} option
val insert : (('a, 'b) control_set * 'a control * 'b) -> unit
val remove : (('a, 'b) control_set * Atom.atom) -> unit
val infoOf : ('a, 'b) control_set -> 'a control -> 'b option
val listControls : ('a, 'b) control_set -> {ctl : 'a control, info : 'b} list
val listControls' : (('a, 'b) control_set * int) -> {ctl : 'a control, info : 'b} list
val app : ({ctl : 'a control, info : 'b} -> unit) -> ('a, 'b) control_set -> unit
val stringControls : 'a Controls.value_cvt -> ('a, 'b) control_set
-> (string, 'b) control_set
Description
type ('a, 'b) control_set
-
The abstract type of control set, where the first type parameter is the value-type of the controls in the set and the second is the type of the information associated with each control.
val new : unit -> ('a, 'b) control_set
-
new ()
creates a new, empty, set of controls. val member : (('a, 'b) control_set * Atom.atom) -> bool
-
member (ctlSet, name)
returns true if there is a control with the given name in the set. val find : (('a, 'b) control_set * Atom.atom) -> {ctl : 'a control, info : 'b} option
-
find (ctsSet, name)
returnsSOME{ctl, info}
when the controlctl
, which has the namename
is in the set andinfo
is its associated information. Otherwise,NONE
is returned. val insert : (('a, 'b) control_set * 'a control * 'b) -> unit
-
insert (ctsSet, ctl, info)
inserts the controlctl
with associated informationinto
into the control set. val remove : (('a, 'b) control_set * Atom.atom) -> unit
-
remove (ctlSet, name)
removes the named control from the set (if it is present). val infoOf : ('a, 'b) control_set -> 'a control -> 'b option
-
infoOf ctlSet ctl
returnsSOME info
, whenctl
is in the set with associated informationinfo
. Ifctl
is not in the set, thenNONE
is returned. val listControls : ('a, 'b) control_set -> {ctl : 'a control, info : 'b} list
-
listControls ctlSet
returns a list of the controls in the set ordered by priority. val listControls' : (('a, 'b) control_set * int) -> {ctl : 'a control, info : 'b} list
-
listControls (ctlSet, level)
returns a list of the controls in the set ordered by priority, but omits any controls with an obscurity level greater or equal tolevel
. val app : ({ctl : 'a control, info : 'b} -> unit) -> ('a, 'b) control_set -> unit
-
app f ctlSet
applies the functionf
to the controls (and their associated information). The order in whichf
is applied is unspecified. val stringControls : 'a Controls.value_cvt -> ('a, 'b) control_set -> (string, 'b) control_set
-
stringControls cvt ctlSet
returns a set of string controls, where the controls in the new set are created by applying the value-convertercvt
to the controls inctlSet
. The associated information is preserved.


Class: Asciidoctor::LaTeX::TeXPreprocessor
- Inherits:
-
Extensions::Preprocessor
- Object
- Extensions::Preprocessor
- Asciidoctor::LaTeX::TeXPreprocessor
- Defined in:
- lib/asciidoctor/latex/tex_preprocessor.rb
Constant Summary
- TEX_DOLLAR_RX =
Map $…$ to stem: TEX_DOLLAR_RX = /(^|s|()$(.*?)$($|s|)|,|.)/ TEX_DOLLAR_SUB = '1latexmath:3' TEX_DOLLAR_SUB = '1\(2\)3'
/\$(.*?)\$/
- TEX_DOLLAR_SUB =
'pass:[\\\(\1\\\)]'
Instance Method Summary (collapse)
Instance Method Details
- (Object) process(document, reader)
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 |
# File 'lib/asciidoctor/latex/tex_preprocessor.rb', line 29 def process document, reader return reader if reader.eof? replacement_lines = reader.read_lines.map do |line| # (line.include? '$') ? (line.gsub TEX_DOLLAR_RX, TEX_DOLLAR_SUB) : line if line.include? '<-->' and document.basebackend? 'tex' line = line.gsub('<-->', 'CHEMLEFTRIGHTARROW') end if line.include? '->' and document.basebackend? 'tex' line = line.gsub('->', 'CHEMRIGHTARROW') end if line.include? '<-' and document.basebackend? 'tex' line = line.gsub('<-', 'CHEMLEFTARROW') end # SPECIAL CHARACTER SUBSTITUTIONS if line.include? '\\&' and document.basebackend? 'html' line = line.gsub '\\&', 'ESCAMPERSAND' end if line.include? '\\_' and document.basebackend? 'html' line = line.gsub '\\_', 'ESCUNDERSCORE' end if line.include? '\\' and document.basebackend? 'html' line = line.gsub '\\$', 'ESCDOLLAR' end # It is important the previous transformation # come before the next one if line.include? '$' line = line.gsub TEX_DOLLAR_RX, TEX_DOLLAR_SUB end # protect math, e.g., (a^2)^3 from Asciidoc subsitutions: if line =~ /^\\\[/ line = line.gsub '\\[', "+++\n\\[" # line = line.gsub /^\\\[/, '+\\]' # line = line.gsub '\\[', '\\[' end if line =~ /^\\\]/ line = line.gsub '\\]', "\\]\n+++\n" # line = line.gsub /'^\\\]/, '\\]+' # line = line.gsub '\\]', '\\]+' end # if line =~ /\[env\..*?\]/ # m = line.match /(\[env\..*?)\]/ # line = line.gsub m[1], m[1]+',subs=none' # end # if line =~ /\&/ # line = line.gsub('&', '\\\&') # en # We do need to make this substitution, but ONLY ouutside # of mathematical text. # Please $FIXME! # # We would like to ensure that underscores in names, # e.g., MACRO_NAME, do not cause LaTeX bugs. However, # the code below introduces a more serious bug: expressions # lik4 $\int_0^1 x^n dx$ are mapped to $\int\_0^1 x^n dx$. # I'm not sure this problem can be solved using regex's: # we need to apply a substitution to a line when there is a match # with '_' AND the word containing the '_' IS NOT in any enclosng # $ ... $ or \[ ... \]. If we had a parser that would recognize # $ ... $ and \[ ... \] and build them into the AST as nodes, # then there would be an easy solution. This issue may # have to wait. # if line =~ /_/ # line = line.gsub /_/, '\_' # end line end reader.unshift_lines replacement_lines reader end |


The Book Thief
Chapter 1
A girl on a train
Chapter 1
A girl on a train
It felt as though the whole globe was dressed in snow. Like it had pulled it on, the way you pull on a sweater. Next to the train line, footprints were sunken to their shins. Trees wore blankets of ice.
As you might expect, someone had died.
In a freak mishap Ranger 3 and its pilot Captain William Buck Rogers are blown out of their trajectory into an orbit which freezes his life support systems and returns Buck Rogers to Earth five-hundred years later.
If not for the courage of the fearless crew the Minnow would be lost. the Minnow would be lost? The Brady Bunch the Brady Bunch that's the way we all became the Brady Bunch.
Lorem


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Fingerstache tbh try-hard, pitchfork brunch bushwick quinoa chia literally tilde live-edge listicle venmo. Church-key echo park copper mug beard ramps wayfarers. Activated charcoal church-key cliche prism, austin franzen godard chia health goth crucifix tattooed edison bulb put a bird on it.
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When forced indoors, I watch movies and television shows,I enjoy cooking.I spend a large amount of my free time exploring the latest technology advancements in the front-end web development world.


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WITNESS LIST Public School Finance, Select Committee December 6, 2001 -10:00A Public School Finance ON: Barnett, Michael (Smith County Appraisal District) Booth, John (Beckvillle ISD) Carpenter, John (Highland Park ISD) Coffee, Roy (Park Cities Community) Dunlap, Jim (Hallsville ISD) Hickey, Wes (Big Sandy ISD) Hyden, Steve (Region 5 ESC) Lloyd, Sherrie (Whitehouse ISD) McGill, Jane (Harleton ISD) Miller, Dennis (Whitehouse ISD) Montgomery, Richard (White Oak ISD) Peterson, Jason (Hallsville ISD) Sanders, W.L. (Carthage ISD) Smith, Joe (Region 7 ESC) Stubblefield, Joe (Chapel Hill ISD) Yost, Jerry (Self)


How to Create Table Views in Swift
Goal
We are going to create an app that has a table view with a list of pet names! You will learn
how to create table views and populate them with data. You'll also learn the basics of arrays in Swift.
Create the Project
- Open Xcode
- Create a new Xcode project
- Under iOS, click Application
- Choose Single View Application
- A single view application creates a starting point (or template) for an app that has a single view. You can add more views to the single view if you want to.
- NEXT
- Fill out the data for the project
- Product Name is the name of your project
- Organization Name is used if you put your app in the app store, so I just put my name or initials
- Organization Identifier is also used for the app store, so I just put my name here as well
- Bundle Identifier is something Xcode create automatically
- Language should be Swift
- Devices should be iPhone. We will be dealing with the Universal selection later
- Make sure all checkboxes are unchecked
- NEXT
- Choose a place where you want your project located. I usually put it on my Desktop
- Keep Source Control: Create Git repository unchecked, we don’t need version control through xcode
- Version control is used to help keep your code organized and in different versions so you can revert back to a time before
Create the table view controller in the Storyboard
- Find the Project Navigator and go into Main.storyboard. This is the main layout file
- If you want more room to work, you can hide sections of Xcode by clicking on these square icons
- The initial scene is a view controller but we want a table view controller
- Click on the view controller in the storyboard and delete it
- Go over to the Object Library and drag onto the storyboard a table view controller
- In the attributes inspector make sure “Is Initial View Controller” is checked
- We need to make sure the ViewController.swift file is associated with our new view controller, so go into ViewController.swift and change its super class from UIViewController to UITableViewController
- Go back into Main.Storyboard, select the table view controller and change its class to ViewController
- Select the Table View Cell and in the attributes inspector make the identifier CellIdentifier
- If you run the app, you will see an empty table view!
Populate the Table View Cells With Data
- Go into ViewController.swift and add an array that will hold the pet names
- Then add strings (pet names) to the array
- var myArray = ["Patches", "Mocha", "Mittens", "Charlie", "Shadow", "Fifi", "Buddy", "Lucky"]
- We need to add required functions for the table view to work properly
- Copy the following two functions into ViewController.swift
-
// Customize number of rows in the table view
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// counts the number of items in the array
return myArray.count
}
// Displays the table view cells
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
//configure the cell
let cell = tableView.dequeueReusableCellWithIdentifier("CellIdentifier", forIndexPath: indexPath)
// Puts text into cell
cell.textLabel?.text = myArray[indexPath.row]
return cell
}
- The first function tells the view controller how many rows are going to be in the table view. myArray.count counts the number of items in the array we created
- The second function displays the cells, so you do any formatting here
- You will see the CellIdentifier is being used to access our cell in the view controller
- cell.textLabel?.text creates text for each of the cells
- myArray[indexPath.row] gives each cell one pet name
- If you run the app, you will be able to see the pet names!


<< Back to Lesson 7
Use lighting
(Use cursor keys to spin the box and
Page Up
/
Page Down
to zoom out/in)
Directional light:
Direction:
X:
Y:
Z:
Colour:
R:
G:
B:
Ambient light:
Colour:
R:
G:
B:
<< Back to Lesson 7


VisComp: 1
VisCompClass Features
| GEOS SDK TechDocs
|
| VisComp
| 2 VisCompClass Instance Data
Composite visible objects provide several features and functions that normal visible objects can not.
VisCompClass
has several instance data fields above and beyond those found in
VisClass
(since
VisCompClass
is a subclass of
VisClass
, it inherits all its instance data and methods). Although it only handles a few messages not defined in
VisClass
, it provides much more functionality. Some of the main features of composite objects are listed below:
-
They can have children.
Normal visible objects can exist only as leaves of a visible object tree.
VisCompClass
can have children, allowing the tree to be built to any number of levels. See the VisClass chapterfor full information on visible trees.
-
They can manage their children's geometry.
A composite's children can be managed arbitrarily by the composite, or the composite can use the geometry manager to automatically position and size its children. Since a composite can have other composites as its children, this sizing can descend recursively throughout the visible tree, making the entire tree's geometry completely self-managed. See Managing Geometry
for information on geometry management.
-
They can create and manage their own windows.
Composite objects can create their own graphics windows. Though this is not typically done (except in Specific UI libraries), it is possible. See Managing Graphic Windows
for more information on windows.
-
They support other
VisClass
functions.
VisCompClass
inherits all the instance data fields and messages of
VisClass
. As such, it can do everything normal
VisClass
objects can do. See the VisClass chapterfor full information on
VisClass
.
| GEOS SDK TechDocs
|
| VisComp
| 2 VisCompClass Instance Data


Contents
Short Descriptions
|
is an assembler for the emu10k1 DSP chip present in the Creative SB Live, PCI 512, and emu APS sound cards. It is used to make audio effects such as a flanger, chorus or reverb. |
|
|
is an SB16/AWE32 Creative Signal Processor (ASP/CSP) control program. |
|
|
is the Linux equivalent of the Echoaudio console application from Echoaudio. It is a tool to control all the features of any Echoaudio soundcard. This includes clock sources, input and output gains, mixers, etc. |
|
|
is a control tool for Envy24 (ice1712) based sound cards. |
|
|
is a GUI to make it easy to retask your jacks - e g, turn your Mic jack into an extra Headphone, or why not make them both line outs and connect them to your surround receiver. |
|
|
is a small program to send HD-audio commands to the given ALSA hwdep device on the hd-audio interface. |
|
|
is a GUI to control the Hammerfall HDSP Alsa Settings. Up to four hdsp cards are supported. |
|
|
is used to load the firmware required by the Hammerfall HDSP sound cards. |
|
|
is the Linux equivalent of the Totalmix application from RME. It is a tool to control the advanced routing features of the RME Hammerfall DSP soundcard series. |
|
|
allows you to control the volume of individual streams on sound cards that use hardware mixing. |
|
|
are tools used to initialize Creative Sound Blaster Audigy-series cards. |
|
|
is a tool used to initialize Creative Sound Blaster Live cards. |
|
|
is the server of a EMU10K{1,2} patch loader for ALSA. |
|
|
is the client of a EMU10K{1,2} patch loader for ALSA. |
|
|
loads config dumps generated by lo10k1 and ld10k1. |
|
|
is an init script for the ld10k1 patch loader. |
|
|
is a helper program to load the firmware binaries onto the Digigram's miXart board sound drivers. The following modules require this program: snd-mixart. These drivers don't work properly at all until the certain firmwares are loaded, i.e. no PCM nor mixer devices will appear. |
|
|
is a helper program to load the firmware binaries onto Digigram's pcxhr compatible board sound drivers. The following modules require this program: snd-pcxhr. These drivers don't work properly at all until certain firmwares are loaded, i.e. no PCM nor mixer devices will appear. |
|
|
is a control tool for RME Digi32 and RME Digi96 sound cards. It provides a graphical frontend for all the sound card controls and switches. |
|
|
is an OPL2/3 FM instrument loader for the ALSA sequencer. |
|
|
is an ALSA SoundScape control utility. |
|
|
is a Tascam US-428 control program. |
|
|
is a helper program to load the 2nd Phase firmware binaries onto the Tascam USX2Y USB sound cards. It has proven to work so far for the US122, US224 and US428. The snd-usb-usx2y module requires this program. |
|
|
is a helper program to load the firmware binaries onto the Digigram's VX-board sound drivers. The following modules require this program: snd-vx222, snd-vxpocket, snd-vxp440. These drivers don't work properly at all until the certain firmwares are loaded, i.e. no PCM nor mixer devices will appear. |


After being on the hunt for LSD for several months with no luck I decided to give morning glory seeds a try. I went to my local store Picking up 3 packets of heavenly blue morning Glory seeds 5 grams of seeds per packet. I also picked up a bottle of Dasani bottled water. I got home finding a Pepper grinder that I had recently found (The sort of grinder Which has to be turned manually.) so I emptied the contents of the each packet into grinder and began grinding the seeds onto a plate. This took quite awhile, Realizing halfway through tht I should have just bought an electric coffee grinder.
After all of the seeds have been turned into a fine powder I take a funnel and siphon the seed matter into the bottle of water. I wrapped the bottle in a towel and put it hidden in a box in a completely dark room. I let it sit for 45-60 mins then took a spaghetti strainer and drained the now murky brown liquid Through the strainer into a bowl, Discarding the seed mush.
Now comes the hard part...Drinking the vile tasting stuff, Others may not think its that bad it basically tastes exactly how it smells, Just a stomach turning smell, But its not hard to swallow while chasing it down with a Pepsi. After drinking the liquid I decide to go up to the video store and rent a movie, I figure the matrix would be cool to watch while trippin'. So, I rent it and walk back home. I get home pop in the matrix, While starting to come up for the trip, I feel similar to being quite high on a substantial amount of marijuana, yet with a clarity of my mind Unlike the stupor feeling of weed.
By this time My stomach is feeling watery-bloated feeling and my thigh area is cramping quite badly (This is about 1 hr 30 mins after) I remember really getting into the movie almost feeling 'as if I were a part of it' Not like a character in it but my mind was completely centered on the movie it was as if the movie was the only thing that mattered for the moment. It was at the part where neo takes the pill and pukes when I began feeling like I was going to puke, But thinking that probably wouldnt be a good idea if I wanted to trip I fought it for another 40 mins or so. I paused the movie and decided to go outside for a little while to look at the stars and think about things.
I lay on my back porch swing and look upon the stars with a clarity and understanding of everything. The sky seemed to bulge out at me, and the trees around me developed a strange green pattern to its leaves. I recall talking to myself about things just questioning everything, Wondering about how life works etc.  I found it extremely easy to talk to people without them having any idea that i was on anything. So, I go on a walk thinking about just everything, recently my girlfriend had been put on Probation and was not allowed to see me or have any contact whatsoever with me which had really gotten me down until I had taken the LSA, I was thinking of her and all I could think was, dont worry things will be ok, everything will work out, Just dont worry.
I get home and watch more of the matrix, which seemed like a good idea at the time, but I realize that it probably is a little influential while under the influence of a psychedelic, but do you think I stop watching it? Of course not..So I finish watching this and start questioning reality. Im talking full blown questions and feeling a lack of reality. Everything seems like it was happening just like the matrix, Nothing seemed real, Not because of the Drug but the way the world in general is. We were all wired into a reality trip, without the knowledge needed to set us free. I go upstairs and start writing things, Everything was so easy to think fully through, everything seemed to flow without any mental blockage.
I feel the freedom of childhood that seemed to have passed by so quickly. I was truly happy at this moment I then saw what looked like a Mexican Jumping bean (remember those?!?) That was an animated one, bouncing in circles with the sound BOING BOING
BA-BOING BOING! repeating over and over. I Was peaking at this time, which was probably 3 hours into the trip. Everything still had so much clarity I found it so easy to express my inner emotions into words. Its now 2 am and i decided to go down to the bathroom and as I walk down the stairs the whole room looked like one of those strange crazy mirror mazes.
I make it to the bathroom and look into the mirror and notice my pupils are continuously Contracting and expanding. This was not a halucination my eyes were just continously getting big then small big then small. It didnt freak me out or anything I thought it was kinda cool though ;P So anyways Its like 3 am and I'm feeling really drowsy at this time so i decide to shut off all the lights and go upstairs and lay in my bed. This is when I really started trippin' ballz.  TRUST ME!
So, Im laying in my bed looking up at the ceiling and i see this light on a coffee table thing spinning around on my ceiling (Almost exactly like the table/light from alice in wonderland) and I look in the corner and see a shadow creature with a large nose and glowing eyes looking at me (not scary though) At the same time I feel as if Im in nazi era germany I hear a voice speaking what sounds like german through a megaphone with a crowd saying YEAH! as he speaks. Then I hear what can only be described as an infinite space vaccuum Sound. It sounds like a loop of a vaccuum sound going on this circle with a warp at the same point everytime.
Then I hear 'Injected with a poison' with an echo repeating over and over. Also I hear another voice saying 'The Madman's drug, The drug of madness.' All of this going on at the same time. While also hearing a record player being slowed down, then I realize I can slow it down with my own thoughts, Or speed it up if I prefer. It was truly AMAZING! So at somepoint I eventually drift off into dreamland, that of which I dont recall falling asleep or dreaming for that matter. Overall it was an amazing trip though. A 3-4 hour peak at least Id say it was amazing.
The next day I woke up feeling somewhat normal. I realize now I definately shouldn't have watched the matrix while trippin'. For more than a month I was almost positive reality wasn't real and I still am having a difficult time believing that it is real.  Imagine waking up to a feeling of voidness, A lack of feeling of anything at all really. Im not sure if this was due completely to watching the matrix on LSA or from my previous use of the Disassociative, DXM. But all i can say is that it isn't great thing to be constantly wondering if reality is real, or not.
I still havent fully recovered from the whole lack of reality thing. Maybe the quest for the understanding of reality is one of the few mysteries better left unsolved, because there is no true answer. So, If you decide to embark on this quest for answers to reality, BE WARNED.  I was in a state of total lack of feeling for almost 3 months and I still have not fully recovered.
Its undescribable but just be aware, question reality it it will only make you question yourself with the punishments it chooses.
Peace and Serenity,
Diluted 0
Experience Reports are the writings and opinions of the individual authors who submit them.
Some of the activities described are dangerous and/or illegal and none are recommended by Erowid.


CaseyCZ is a Cydia repository (Ios 12+).
Add to CydiaGUI Process Viewer for iOS 13+. CocoaTop is a free Process Viewer for iOS wit option to monitor CPU and RAM activity on installed apps.
More infoThis is a sample package with lots of information.
More infoThis is a sample package with lots of information.
More info


{% extends "base.html" %} {% block body-class %} class="frontpage-body"{% endblock body-class %} {% load staticfiles %} {% block content %} Know what Todo. Ticked is a wesite that allows you to track your daily todos. Use it instead of your normal lists or post-its to keep your desk and your mind clear. {% endblock content %}
Ticked is a wesite that allows you to track your daily todos. Use it instead of your normal lists or post-its to keep your desk and your mind clear.


Hello guys! Angelo here! We have stunning and great updates for you to look at!
To start: We have these updates.
A New Cover! What do you think of it! You may use our covers to promote our podcast via the branding page. Don't modify the photo though!
A Transcripts Page is linked to our site! Here our podcast fans will be able to access our podcast transcripts to any available episode. However some episode won't have transcripts made by us because our main focus is to work on more episodes of our podcast. Whilst we work on more episodes, you may help us with transcripts! If you like to help us out and make transcripts for the site, download a copy of our episode and analyze our episode then begin writting. Audio to Text providers are also allowed and good to use. Contact us once after you made a copy to send us so we can put it on the website! We will credit you with your name if applicable. Thanks for contributing to our podcast resources!
Third, we have added a new video to our gallery, Robot on Chain Reaction Intro Parody! Hmm. We wonder why Robot is featured on our website....
So far, with that in mind, we have prepped a script for Episode 6 of our podcast! We are on the works right now, so we won't spoil anything so it's really much up to you to keep track of updates and new episodes coming. We are on multiple Streaming platforms so be sure to hit subscribe or follow on any cover you see where we distribute our podcast.
We are also thinking on having merch on for our podcast. We have to prioritize things first before we can get into that. We have set up a Spring account for later though. Stay tuned if your interested in seeing that.
And finally... we use Audry.io to grow our podcast. Although it may not live up to our standards, it is truely navigational and soon we will be using it even more to grow our podcast. To see for yourself, here is our profile!
As you see down below, we are interested in "Promo Swaps". You send us our podcast trailer, shoutouts or mentions and we promote it and you do the same thing to us! Basically.
Also we have content collabs, while we do caller collabs, we can still do podcast collabs and talk about anything we want, (eg. Interviews, content co-creation).
Be sure to check us out on Audry.io if you want. We might be doing more forms of promotion in the near future, but for now, more episodes are to be produced.
Thank you for taking the time to read this, and have fun, enjoy our website and our podcast!


{#{% include "_layouts/modal/aboutModal.html" %}#} {% include "_layouts/modal/loginModal.html" %} {% include "_layouts/modal/loadDynamoModal.html" %}


| Class | Description |
|---|---|
| AMDBusAddressableMemory | |
| AMDDeviceAttributeQuery | |
| AMDDeviceMemoryFlags | |
| AMDOfflineDevices | |
| APPLEContextLoggingUtil |
Utility class that provides CLContextCallback implementations that use
the APPLE_ContextLoggingFunctions callback functions.
|
| APPLEGLSharing | |
| APPLESetMemObjectDestructor | |
| CL |
LWJGL users must use this class to initialize OpenCL
before using any other class in the org.lwjgl.opencl package.
|
| CL10 |
The core OpenCL 1.0 API
|
| CL10GL |
The core OpenCL 1.0 OpenGL interrop functionality.
|
| CL11 |
The core OpenCL 1.1 API
|
| CL12 |
The core OpenCL 1.1 API
|
| CL12GL |
The core OpenCL 1.2 OpenGL interrop functionality.
|
| CLBuildProgramCallback |
Instances of this class can be used to receive OpenCL program build notifications.
|
| CLCapabilities | |
| CLCommandQueue |
This class is a wrapper around a cl_command_queue pointer.
|
| CLCompileProgramCallback |
Instances of this class can be used to receive OpenCL program compilation notifications.
|
| CLContext |
This class is a wrapper around a cl_context pointer.
|
| CLContextCallback |
Instances of this class can be used to receive OpenCL context error notifications.
|
| CLDevice |
This class is a wrapper around a cl_device_id pointer.
|
| CLDeviceCapabilities | |
| CLEvent |
This class is a wrapper around a cl_mem pointer.
|
| CLEventCallback |
Instances of this class can be used to handle OpenCL event callbacks.
|
| CLKernel |
This class is a wrapper around a cl_kernel pointer.
|
| CLLinkProgramCallback |
Instances of this class can be used to receive OpenCL program linkage notifications.
|
| CLMem |
This class is a wrapper around a cl_mem pointer.
|
| CLMemObjectDestructorCallback |
Instances of this class can be used to receive OpenCL memory object destruction notifications.
|
| CLNativeKernel |
Instances of this class can be used to execute native kernels.
|
| CLPlatform |
This class is a wrapper around a cl_platform_id pointer.
|
| CLPlatformCapabilities | |
| CLPrintfCallback |
Instances of this class can be used to receive OpenCL printf messages.
|
| CLProgram |
This class is a wrapper around a cl_program pointer.
|
| CLSampler |
This class is a wrapper around a cl_sampler pointer.
|
| EXTAtomicCounters32 | |
| EXTAtomicCounters64 | |
| EXTDeviceFission | |
| EXTMigrateMemobject | |
| INTELImmediateExecution | |
| INTELThreadLocalExec | |
| KHRDepthImages | |
| KHRFp16 | |
| KHRFp64 | |
| KHRGLDepthImages | |
| KHRGLEvent | |
| KHRGLMsaaSharing | |
| KHRGLSharing | |
| KHRICD | |
| KHRImage2DFromBuffer | |
| KHRInitializeMemory | |
| KHRSubgroups | |
| KHRTerminateContext | |
| NVDeviceAttributeQuery | |
| Util |
Utility methods for OpenCL
|
| Exception | Description |
|---|---|
| OpenCLException |
Copyright © 2002-2010 lwjgl.org. All Rights Reserved.


Enrolment List
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EnrolmentID
Date of Enrolment
Course ID
Course Name
Credits
courseStartDate
courseEndDate
Enrolment Status
Operation
NO
EnrolmentID
DateOfEnrolment
Course ID
Course Name
Credits
courseStartDate
courseEndDate
Enrolment Status
Withdraw
-
Enroll for a course
View Grades & GPA
View My Courses


| HOME | DOWNLOAD | DOCUMENTATION | FAQ |
> Home > Documentation
Python
|
Python notebooks (examples/notebooks) |
|
| Introduction 1 [html] | Grids and and Spherical Harmonic Coefficients. |
| Introduction 2 [html] | Localization windows and spectral analysis. |
| tutorial 1 [html] | Simple spherical harmonic analyses. |
| tutorial 2 [html] | Localized spectral analysis on the sphere. |
| tutorial 3 [html] | The SHTOOLS class interface. |
| tutorial 4 [html] | Spherical harmonic normalizations and Parseval's theorem. |
| tutorial 5 [html] | Multitaper spectral analysis class interface. |
| tutorial 6 [html] | 3D plots of gridded data. |
|
Python test programs (examples/python) |
|
| ClassInterface/ | Test the python class interfaces. |
| TestLegendre/ | Test and plot the Legendre functions. |
| IOStorageConversions/ | Read coefficients from a file and test conversions between real and complex coefficients. |
| GlobalSpectralAnalysis/ | Test functions to compute different power spectra from real and complex coefficients. |
| SHRotations/ | Test the rotation of spherical harmonic coefficients. |
| LocalizedSpectralAnalysis/ | Test the coupling matrix, localized spectral analysis, and bias routines. |
| GravMag/ | Test the gravity and magnetics routines, and compute the crustal thickness of Mars. |
| TimingAccuracy/ | Perform timing and accuracy tests using real and complex coefficients, with Driscoll and Healy (1994) and Gauss-Lengendre quadrature grids. |
| Other/ | Test a variety of other routines. |
Fortran 95
|
Fortran 95 example programs (examples/fortran) |
|
| SHCilmPlus | Demonstration of how to expand spherical harmonic files into gridded maps using the GLQ routines, and how to compute the gravity field resulting from finite amplitude surface relief. |
| SHExpandDH | Demonstration of how to expand a grid that is equally sampled in latitude and longitude into spherical harmonics using the sampling theorem of Driscoll and Healy (1994). |
| SHExpandLSQ | Demonstration of how to expand a set of irregularly sampled data points in latitude and longitude into spherical harmonics by use of a least squares inversion. |
| SHMag | Demonstration of how to expand scalar magnetic potential spherical harmonic coefficients into their three vector components and total field. |
| MarsCrustalThickness | Demonstration of how compute a crustal thickness map of Mars. |
| SHRotate | Demonstration of how to determine the spherical harmonic coefficients for a body that is rotated with respect to its initial configuration. |
| SHLocalizedAdmitCorr | Demonstration of how to calculate localized admittance and correlation spectra for a given set of gravity and topography spherical harmonic coefficients. |
| TimingAccuracy | Test programs that calculate the time required to perform the GLQ and DH spherical harmonic transforms and reconstructions and the accuracy of these operations. |
> Home > Documentation
| Laboratoire Lagrange | Observatoire de la Côte d'Azur | © 2017 SHTOOLS |


Unlocks the sidebar.
unlock()
Returns undefined.
Description
This method will unlock the sidebar previously locked with .lock() method. This method will call
w2utils.unlock() to perform the action.
If you have following sidebar:
And if the sidebar is locked, you can unlock it by


How to use the Feathers PickerList
component
The PickerList
class displays a Button
that may be triggered to show a pop-up List
. The way that the list is displayed may be customized for different platforms by changing the picker list's pop-up content manager. Several different options are available, including drop downs, callouts, and simply filling the stage vertically.
The Basics
First, let's create a PickerList
control and add it to the display list:
var list:PickerList = new PickerList();
this.addChild( list );
Next, we want to actually allow it to select some items, so like a List
components, we pass in an IListCollection
implementation, such as ArrayCollection
or VectorCollection
, to the dataProvider
property.
var groceryList:ArrayCollection = new ArrayCollection(
[
{ text: "Milk" },
{ text: "Eggs" },
{ text: "Bread" },
{ text: "Chicken" },
]);
list.dataProvider = groceryList;
We need to tell the picker list's item renderers about the text to display, so we'll define the labelField
.
list.itemRendererFactory = function():IListItemRenderer
{
var itemRenderer:DefaultListItemRenderer = new DefaultListItemRenderer();
itemRenderer.labelField = "text";
return itemRenderer;
}
Since the selected item's label is also displayed by the picker list's button, we also need to pass a value to the labelField
of the picker list.
list.labelField = "text";
We can provide some text to display with the button's label when no item is selected. This is often called a hint, a description, or a prompt
:
list.prompt = "Select an Item";
list.selectedIndex = -1;
We need to set the selectedIndex
to -1
if you want to display the prompt because the picker list will automatically select the first item.
Skinning a PickerList
The skins for a PickerList
control are divided into several parts, including the button and pop-up list sub-components. For full details about what skin and style properties are available, see the PickerList
API reference.
Skinning the button
Please read How to use the Feathers Button
component for full details about how to skin this component.
With a Theme
If you're creating a theme, you can target the PickerList.DEFAULT_CHILD_STYLE_NAME_BUTTON
style name:
getStyleProviderForClass( Button )
.setFunctionForStyleName( PickerList.DEFAULT_CHILD_STYLE_NAME_BUTTON, setPickerListButtonStyles );
The styling function might look like this:
private function setPickerListButtonStyles( button:Button ):void
{
button.fontStyles = new TextFormat( "Helvetica", 20, 0xcc0000 );
}
You can override the default style name to use a different one in your theme, if you prefer:
list.customButtonStyleName = "custom-button-name";
You can set the function for the customButtonStyleName
like this:
getStyleProviderForClass( Button )
.setFunctionForStyleName( "custom-button-name", setPickerListCustomButtonStyles );
Without a Theme
If you are not using a theme, you can use buttonFactory
to provide skins for the picker list's button:
list.buttonFactory = function():Button
{
var button:Button = new Button();
//skin the button here, if not using a theme
button.fontStyles = new TextFormat( "Helvetica", 20, 0xcc0000 );
return button;
};
Skinning the List
Please read How to use the Feathers List
component for full details about how to skin this component.
With a Theme
If you're creating a theme, you can target the PickerList.DEFAULT_CHILD_STYLE_NAME_LIST
style name:
getStyleProviderForClass( List )
.setFunctionForStyleName( PickerList.DEFAULT_CHILD_STYLE_NAME_LIST, setPickerListPopUpListStyles );
The styling function might look like this:
private function setPickerListPopUpListStyles( list:List ):void
{
var skin:Image = new Image( texture );
skin.scale9Grid = new Rectangle( 2, 3, 1, 6 );
list.backgroundSkin = skin;
}
You can override the default style name to use a different one in your theme, if you prefer:
list.customListStyleName = "custom-list";
You can set the function for the customListStyleName
like this:
getStyleProviderForClass( List )
.setFunctionForStyleName( "custom-list", setPickerListCustomListStyles );
Without a Theme
If you are not using a theme, you can use listFactory
to provide skins for the picker list's pop-up list:
list.listFactory = function():List
{
var list:List = new List();
//skin the pop-up list here, if not using a theme
var skin:Image = new Image( texture );
skin.scale9Grid = new Rectangle( 2, 3, 1, 6 );
list.backgroundSkin = skin;
return list;
};
Customizing the Pop Up Behavior
Next, we'll take a look at how to use the popUpContentManager
property to customize how the pop-up list appears when you trigger the picker list's button.
Feathers comes with three pop-up content managers:
VerticalCenteredPopUpContentManager
provides a pop-up UI similar to Android. The list fills the entire vertical space of the screen. The list fills enough space horizontally to fit within the shorter edge of the screen, even when the device is in the landscape orientation. Along all edges, padding around the edges of the list may be customized.CalloutPopUpContentManager
places the list into aCallout
component. The callout points to the picker list's button.DropDownPopUpContentManager
displays the list as a drop down along the edge of the picker list's button. This is similar to a drop down list in a desktop UI.
Selecting the pop up content manager, is as simple as instantiating it and passing it to the picker list:
list.popUpContentManager = new DropDownPopUpContentManager();
You may customize properties of the pop up content manager first, if needed:
var popUpContentManager:VerticalCenteredPopUpContentManager = new VerticalCenteredPopUpContentManager();
popUpContentManager.marginTop = 20;
popUpContentManager.marginRight = 25;
popUpContentManager.marginBottom = 20;
popUpContentManager.marginLeft = 25;
list.popUpContentManager = popUpContentManager;
You can completely customize the pop-up behavior of the picker list by implementing the IPopUpContentManager
interface.


--- title: Multiple files vs. Tar.gz layout: sub-page date: 2022-1-7 excerpt: | The objective of these tests is to check if it is faster to transfer each file separately or compress all the files on a tar.gz file for a job on the Open Science Grid (OSG) using the HTCondor. ---
by Fabio Andrijauskas, as of January 7, 2022
The objective of these tests is to check if it is faster to transfer each file separately or compress all the files on a tar.gz file for a job on the Open Science Grid (OSG) using the HTCondor. Was used one tar.gz file with 50000 50KB (each file has a random content, the compress ratio is ≈ 1 : 1) to copy to the node, and the MD5 hash was calculated using the code from Listing 1 e 2.
Listing 1: Job requesting the tar.gz file.
error = short$(ProcId).error
Arguments = $(ProcId)
output = short$(ProcId).output
log = short$(ProcId).log
Requirements = GLIDEIN_Site == ”CU − Research Computing”
+DESIRED_Sites = ”CU − Research Computing”
transfer_input_files = /home/fandri/data2.tar.gz
should_transfer_files = yes
request_cpus = 1
request_memory = 100 MB
request_disk = 100 MB
executable = 1.sh
queue 20
Listing 2: Script to check the data
#!/bin/bash
tar −xf data.tar.gz
cd data
for f in file *;
do
md5sum $f
done
Code on Listing 3 e 4 was used to process 50000 files 50KB each (files have a random content, the compress ratio is ≈ 1 : 1) to copy to the node and calculate the MD5 hash.
Listing 3: Job
error = short$(ProcId).error
Arguments = $(ProcId)
output = short$(ProcId).output
log = short$(ProcId).log
Requirements = GLIDEIN_Site == ”CU − Research Computing”
+DESIRED_Sites = ”CU − Research Computing”
transfer_input_files = /home/fandri/data2/
should_transfer_files = yes
request_cpus = 1
request_memory = 100 MB
request_disk = 100 MB
executable = 1.sh
queue 20
Listing 4: Script
for f in file *;
do
md5sum $f
done
Table 1 shows the results using 50000 50KB (each file has a random content) on a tar.gz and multiple files requesting from Chicago - IL to:
The tests were executed 20 times. Table 1 contains statistical data from all the tests:
Table 1: Results from tests on SU-ITS, SDSC, and CU site from the Chicago OSG login.
Site | AVG transfer | AVG decompress | AVG proc | AVG total proc | STDEV transfer | STDEV untar | STDEV proc |
|---|---|---|---|---|---|---|---|
SU-ITS - targz | 211.59s | 35.24s | 868.80s | 1115.62s | 84.57s | 7.39s | 437.79s |
SU-ITS - files | 202.94s | – | 973.18s | 1176.12s | 40.41s | – | 296.78s |
CU - targz | 77.84s | 17.32s | 179.22s | 274.38s | 19.22s | 1.36s | 54.69s |
CU - files | 85.45s | – | 178.52s | 263.96s | 23.28s | – | 57.17s |
SDSC - targz | 40.309s | 27.99ss | 353.99s | 422.22s | 22.99s | 6.5s | 56.86s |
SDSC - files | 37.82s | – | 559.73s | 597.53s | 19.13s | – | 196.70s |
Figure 1 shows the time to transfer the data using multiple files or using only one tar.gz file. The error bars are the standard deviation. Due to the standard deviation of all measures, there is no statistical difference between the test using tar.gz or the multiple files.
All tests show no statistical difference when using the tar.gz or the multiple files. The investigations of the HTCondor source code (https://github.com/htcondor/htcondor/blob/master/src/condor_utils/file_transfer.cpp) and HTCondor developers comments, it is possible to conclude that there is no hugely overhead for the multiple file approach on HTCondor. The only vantage to use the tar.gz is the possibility to compress the data and have less network usage.


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<%= name %>
v<%= moduleVersion %> <%= moduleSize %>- Declarations
- <%= moduleObj.declarations.total %>
- Selectors
- <%= moduleObj.selectors.total %>
- Max. Specificity Score
- <%= moduleObj.selectors.specificity.max %>
- Size of Avg. Rule
- <%= moduleObj.rules.size.average %>
There are two classes for adding hover effects to elements. One dims an element on hover, the other will hide children within an element on hover. The dim class can be used on links of any color to give visual affordance to users that something can be interacted with.


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| DOSE: T+ 0:00 |
180 mg |
oral |
MBDB |
(powder / crystals) |
| T+ 2:00 |
|
|
Kava |
|
Prelude
The opportunity finally presented itself for me to pay a visit to the shrine of the little known African deity Mbi Dibi. I've had plenty of experience with the MDMA family of entheogens, but I'd never knowingly taken MBDB. This is one that's always intrigued me, as it supposedly has neither hallucinogenic nor dopaminergic qualities.
11:30PM
180mg of MBDB down the hatch!
11:50PM
A little bit of a tingle? Maybe so...
12:00AM
Definitely feeling warm now, similar to but not identical to the MDMA come-up. My stomach is mildly unhappy, but I suspect this is due to the steak I ate for dinner... no different than I'd expect from taking MDMA after a heavy meal. This stuff seems to be kicking in faster than I'd expect from MDMA, but it's not dramatically different otherwise.
12:08AM
Feeling quite warm, and my pulse has increased quite a bit. This still feels quite similar to MDMA, but it's definitely got a different character. What exactly that is, I can't say yet. The warmth feels more on my skin than internal, but its still generally the same sort of warmth as from MDMA. Maybe a little bit warmer than the MDMA warmth.
12:20AM
There's been a very mild nausea for the past couple minutes, but no worse than I've gotten from MDMA on occasion. Vomiting definitely isn't a concern. The warm rush seems to be leveling out. There's some mild nystagmus. Feels good to close my eyes and lay back.
12:35AM
The rush has definitely leveled out, maybe even toned down a little. The nystagmus is very strong, like from a large MDMA dose. I like the fluttervision of MDMA, so this is a good thing. Some pretty bad jaw clench, worse than I get from MDMA (though in fairness, I don't get the bad jaw clench that many people report from MDMA).
The urge to lie back and close my eyes is very strong. This is not party stuff, that's for sure... unless your idea of a party is to curl up in a corner somewhere with your eyes closed. I don't think I could sleep on this stuff, but it does have a very powerful sedating quality, almost narcotic. I've had this same sort of effect before from pills which were alleged to be MDEA, but not quite to this extent!
The warmth is quite strong. At times I do motivate myself to get up and go open the door. It's a little above freezing outside, and the blast of cold air feels refreshing. This stuff causes much more of a warm feeling than MDMA, which is good now... but I have the feeling that taking MBDB on a hot summer day might be uncomfortable. As I mentioned before, the warmth feels to be more on my skin surface than the internal warmth from MDMA. It also doesn't seem to cause the sometimes profuse sweating MDMA does.
1:15AM
The effects are definitely decreasing slowly. This is a very drowsy MDMA-type experience. Its very comfortable, almost irresistably so, to curl up, close my eyes, and just think. Pupils are very dilated. I'm still getting a good deal of nystagmus. The warmth is fading though. I've got some kava I made earlier in the fridge that I think I'll drink soon.
1:30AM
Time for that kava I think...
This is an odd drug. It's very much like MDMA, but without the energetic stimulant effect. It's introspective & contemplative feeling (and I do feel I had some significant insights on the trip), though again not in the same manner as MDMA. It's much calmer feeling. I think it would be even harder to have a bad trip on MBDB than on MDMA.
2:15AM
Quite far down from the MBDB.
Still have some pretty bad jaw clenching & grinding. The kava is taking care of that nicely though. There's still some mild nystagmus, and colors all look much more vivid than normal. For a drug designed to eliminate the 'hallucinogenic' qualities of MDMA, it seems to produce more visual phenomena than MDMA.
Paradoxically, I'm feeling much more energetic now that I've drank kava. I don't feel the urge to curl up and close my eyes anymore. It says much about the sedating qualities of MBDB that drinking kava actually gives you more energy! Feels quite comfortable though. I like where I am very much.
3:30AM
Effects dramatically lower. Still increased color awareness, still a nice MBDB+kava body buzz... still some jaw trouble. A little drowsy, but I doubt I could sleep.
4:00AM
Pretty much down... as much as possible without sleep I think.
Conclusion
The next day, I experienced some very significant hangover effects. This took me by surprise, as MDMA type drugs almost never give me any negative aftereffects (and when they do, they're clearly attributable to insufficient sleep afterwards). Usually, MDMA type drugs leave me feeling a very positive happy glow for several days. Not MBDB!
First, I had a quite annoying headache for most of the day. From the location and type of pain, this was obviously due to the severe jaw clenching I had. If I do MBDB again, I will need to take precautions to prevent or minimize the jaw clenching effect.
Second, I had a drained, dull, chewed-up feeling all day. This was nothing like the tired but pleasant afterglow I get from MDMA. It sucked.
Last, and most unusual, I experienced some stomach effects. I had some mild diarrhea as well as recurring waves of mild nausea for most of the day. I've certainly never experienced this from MDMA nor heard of people having next-day nausea from such drugs. This makes me wonder if perhaps there was more at play than just a hangover... perhaps I managed to get a stomach flu or something, and that this was responsible for some of what I thought was a hangover.
By late evening, I was tired enough of the headache and the stomach problems to resort to some opiates. I obtained some poppy pods and made a tea, and this cleared up the headache and stomach problems fairly quickly. They didn't return, which probably rules out the stomach flu theory.
In summary, I found the MBDB experience to be enjoyable. I also found it to be insightful, but not nearly so much as MDMA... but then I don't think I took a big enough dose to get the full effects. Another 10-20mg would probably make this a much more rewarding drug for me. The next day effects pose a problem though... if what I experienced this time is the norm, it would probably prevent me from using MBDB again. The trip was not rewarding enough to compensate for that kind of hangover. However, due to the possibility that what I experienced was an abnormal reaction or a coincidental virus of some kind, I would give MBDB another try if the opportunity presented itself. I'd probably take a slightly higher dose, maybe 200mg. For now, I think the jury is still out on MBDB's value.
PostScript: I did, in fact, come down with a flu the next day and some of the after effects I experienced were very probably related to just being on the brink of getting sick.
Experience Reports are the writings and opinions of the individual authors who submit them.
Some of the activities described are dangerous and/or illegal and none are recommended by Erowid.


What is a responsive site, and why is responsiveness important?
Responsiveness, in regards to websites, means that the webpage(s) can be viewed in a streamlined, structured, and uncluttered way by all different types of devices. I.e. The website has code behind it that will allow for different screen sizes. It is important because people nowadays use multiple devices. Creating a rewarding user experience on all types of devices and screen sizes should always be a developer's goal.
What is mobile first design, and why is it important?
The term 'mobile first design' explains itself. It is the concept that websites should be developed first for mobile phones ( device with the lowest specs ) and then expanded upon as the screen resolution/bandwidth availability increases. A mobile first approach streamlines the development process, increasing effeciency, and makes sure the designer is creating a good product from the ground up. It is important also because mobile usage is becoming so popular, so a good mobile design is crucial.
What are frameworks, and what are their pros and cons?
Frameworks are code toolsets that solve problems that developers commonly encounter. They are often open-sourced, meaning that anyone can use them online, for free. There is a large community of framework developers on the web.
Frameworks are beneficial as they can help a projects effeciency. They assist in giving readliy-available structure to a site. Frameworks can possibly be detrimental to creativity and coming up with unique ways of site development, and also detrimental to coder development ( growth ) because not as much code is written, rather it's copied.
What is a wireframe and why do we use it?
A wireframe is a basic foundational element to website development. It is often a hand drawn schematic that sets out the site structure and design. Wireframes are used to give structure to ideas. Once the ideas are put into a wireframe, they can be elaborated on more easily, not only by oneself, but also a team.
Please see the below example - a wireframe of this site:
What aspects of my wireframes did I find difficult to implement, and why?
I found the CSS part the most difficult, in terms of implementing my design ideas. I'm still getting my head around many of its properties. In saying that, at this stage, I have decided to keep my site reasonably basic, so the design wasn't hugely problematic to implement.


--- layout: post title: ! 'Code Kata: Kata Two' date: 2013-08-27 22:04:43.000000000 +02:00 categories: - .NET tags: - C# - CodeKatas status: publish type: post published: true meta: _edit_last: '1' author: login: admin email<EMAIL_ADDRESS>display_name: Philippe first_name: Philippe last_name: Vlérick excerpt: !ruby/object:Hpricot::Doc options: {} ---
I haven’t been coding much at work recently, so I decided that I need to sharpen the saw a bit and exercise.
I decided to start with some Code Kata. The first one is somewhat an academical problem: implement binary search in five different ways.
Here is my first solution, the iterative way:
//Classic iterative method public int Chop1(int element, IEnumerable<int> collection) { //Empty collection -> not found if (collection.Count() == 0) return -1; var lower = 0; var upper = collection.Count() - 1; int index, candidate; while (lower != upper) { index = lower + ((upper - lower) / 2); candidate = collection.ElementAt(index); if (candidate == element) { return index; } else if (candidate < element) { lower = index + 1; } else //if (candidate > element) { upper = index; } } return (collection.ElementAt(upper) == element) ? upper : -1; }
I was actually scared at the time it took me. This is the kind of problem you are expected to solve in 5 minutes flat at university, but the lack of programming puzzles lately soften my brain. On the bright side, I challenged myself to get it right without compiling before being absolutely sure that the code would pass the tests, which it did. This involved some scratching paper to test the different corner cases, but I felt good when the green light of passing tests appeared.
Here is my second solution, recursive and passing slices of the original array:
//Recursively passing smaller slices of the initial array public int Chop2(int element, IEnumerable<int> collection) { //Empty collection -> not found if (collection.Count() == 0) return -1; var index = collection.Count() / 2; var candidate = collection.ElementAt(index); if (candidate == element) { return index; } else if (candidate < element) { var offset = index + 1; var position = Chop2(element, collection.Skip(index + 1)); return position > -1 ? offset + position : -1; } else //if (candidate > element) { return Chop2(element, collection.Take(index)); } }
After finishing this one, I started thinking about it and found it very funny that this came more naturally than a recursive function using boundaries inside the array. I tend to use LINQ a lot when I code in C#, and I guess this is where it shows. The good news is that this led me to the third possible solution, which would have been second if I was just out of university.
Third solution, recursive and passing arrays boundaries:
//Classic recursive method, passing boundaries around public int Chop3(int element, IEnumerable<int> collection) { //Empty collection -> not found if (collection.Count() == 0) return -1; return SubChop3(element, collection, 0, collection.Count() - 1); } //...and its sub method required for passing boundaries around private int SubChop3(int element, IEnumerable<int> collection, int lower, int upper) { //End case: lower == upper if (lower == upper) { if (collection.ElementAt(lower) == element) return lower; else return -1; } var index = lower + ((upper - lower) / 2); var candidate = collection.ElementAt(index); if (candidate == element) { return index; } else if (candidate < element) { return SubChop3(element, collection, index + 1, upper); } else //if (candidate > element) { return SubChop3(element, collection, lower, index); } }
Nothing too fancy here.
I don’t have a 4 and 5 yet, but I already have one idea that is very challenging: continuation passing style. I was also tempted to implement one version using TPL, but it wouldn’t be very different from the recursive methods, so I am not sure… Maybe using a custom partitioner?


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About Me
Speed was a very important factor in the early 20th century. From Sergei Eisenstein, Henry Ford and the artists of Cubism and Futurism, speed was everywhere to be found. In the “Manifesto of Futurism” created and written by Filippo Marinetti, he mentions that new art in the modern world was inspired by energy, courage, audacity and the beauty of speed. Marinetti goes onto compare a racing car and its pipes to that of a serpent and how a roaring engine is beautiful. Eisenstein followed in the footsteps on speed by creating the Russian film The Battleship Potemkin. In this film, Eisenstein displays 155 separate images within one minute and twenty seconds. He created this film so that each image only flashed for about 1.6 seconds on screen. That is extremely fast for this time period.
Henry Ford was also very well known for speed in the early 20th century. Ford is credited with the invention of the assembly line production. He hired a man named Fredrick Taylor to work out the exact speed at which each worker should be working as well as which motions workers should use to perform optimally. Cubism, founded by Pablo Picasso and Georges Braque, was a form of art that decomposed their subjects into planes which converged into an angular maze, so that the viewer would wander throughout the picture. Picasso and Braque became so abstract with their paintings that they became indistinguishable and their subjects nearly disappeared


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Remove the promoted attendee from the Primary meeting. This client will stop sharing audio, video, and data messages.
This will revert the end-user to precisely the state they were before a call to promoteToPrimaryMeeting
This will have no effect if there was no previous successful call to promoteToPrimaryMeeting
. This
may result in AudioVideoObserver.audioVideoWasDemotedFromPrimaryMeeting
but there is no need to wait for that callback
to revert UX, etc.
Dispose of this instance. The instance cannot be used after this method has been called.
Called when simulcast is enabled and simulcast uplink encoding layers get changed.
Iterates through each observer, so that their notification functions may be called.
This API will be deprecated in favor of ClientMetricReport.getRTCStatsReport()
.
It makes an additional call to the getStats
API and therefore may cause slight performance degradation.
Please subscribe to metricsDidReceive(clientMetricReport: ClientMetricReport)
callback,
and get the raw RTCStatsReport
via clientMetricReport.getRTCStatsReport()
.
Get all the remote video sending sources.
Handles the meeting session status and returns true if it will restart the session.
Pauses receiving stream on peer connection by streamId
Allows an attendee in a Replica meeting to immediately transition to a Primary meeting attendee without need for reconnection. The promise should always return a session status even upon failure (i.e. it should never reject). See the guide for more information.
The resolved MeetingSessionStatus
will contain a MeetingSessionStatusCode
of the following:
MeetingSessionStatusCode.OK
: The promotion was successful (i.e. session token was valid,
there was room in the Primary meeting, etc.), audio will begin flowing
and the attendee can begin to send data messages, and content/video if the call is not already at limit.MeetingSessionStatusCode.AudioAuthenticationRejected
: Credentials provided
were invalid when connection attempted to Primary meeting. There may be an issue
with your mechanism which allocates the Primary meeting attendee for the Replica
meeting proxied promotion. This also may indicate that this API was called in a
non-Replica meeting.MeetingSessionStatusCode.AudioCallAtCapacity
: Credentials provided were correct
but there was no room in the Primary meeting. Promotions to Primary meeting attendee take up a slot, just like
regular Primary meeting attendee connections and are limited by the same mechanisms.MeetingSessionStatusCode.SignalingBadRequest
or MeetingSessionStatusCode.SignalingInternalServerError
:
Other failure, possibly due to disconnect or timeout. These failures are likely retryable.Application code may also receive a callback on AudioVideoObserver.videoAvailabilityDidChange
to indicate they
can begin to share video.
chime::DeleteAttendee
on the Primary meeting attendee will result in AudioVideoObserver.audioVideoWasDemotedFromPrimaryMeeting
to indicate the attendee is no longer able to share.
Any disconnection will trigger an automatic demotion to avoid unexpected or unwanted promotion state on reconnection.
If the attendee still needs to be an interactive participant in the Primary meeting, promoteToPrimaryMeeting
should be called again with the same credentials.
This function should not be called until the first one resolves.
Promise which resolves to a session status for the request. See possible options above.
Restarts the peer connection and/or the session.
Restarts the local audio. This function assumes the peer connection is established and an active audio stream must be chosen in DeviceController
Replaces the local video device without a WebRTC negotiation on the sender side and
avoids that all video subscribers to re-negotiate at the same time.
This is an optimized way of replacing video stream and requires WebRTC Unified Plan
.
Restarts the local video device. The callback is called when the device has been restarted.
Resumes receiving stream on peer connection by streamId
Sets the audio profile to use for audio. The new audio profile takes effect
on the next call to start
or if already started, upon the next reconnect.
Set codec preferences for this clients send stream in order of most preferred to least preferred. The controller will fallback for one of two reasons
If there is no overlap between what is passed in and what is supported by the browser, this function may not have any effect, and the default set of codecs for this browser will be used.
Sets the max bandwidth for video publishing
Start the meeting session. By default this will connect and begin sending and receiving audio, depending on the implementation.
This method also allows you to provide options for how connection occurs.
The only supported option is signalingOnly
. Specifying this option will
cause the controller to only connect the meeting signaling channel. This
can be performed relatively early in the join lifecycle (e.g., prior to
choosing audio devices), which can improve join latency.
Your code is responsible for calling start
again without signalingOnly
to complete connection.
Updates the peer connection when video tiles have changed. If needsRenegotiation
is set explicitly to false, we may skip SDP negotiation if it is not necessary.
Called when the video input stream is changed.
Generated using TypeDoc
Called when the audio input stream is changed.


There will be a time in everyone’s life where we think we are at the lowest point of our lives. We think to ourselves how we will never be able to succeed and achieve what we set out to do. We pity ourselves about how miserable or unfortunate our lives have become. We see ourselves as failures, losers, and etc. The list goes on.
However, the secret to happiness is not what life is to us but what we do with it. Only those are able to accept the reality for what it is and continue to move forward or those who are able to keep their heads up even in the bleakest moment of life knows the secret to happiness.
Viktor Frankl, a famous psychologist and a Holocaust survivor who observed and analyzed how prisoners in concentration camps lived, posted the following questions in one of his most well-known books, Man’s Search for Meaning:
“Is there no spiritual freedom in regard to behavior and reaction to any given surroundings? Is that theory true which would have us believe that man is no more than a product of many conditional and environmental factors—be they of a biological, psychological or sociological nature? ... Most important, do the prisoners’ reactions to the singular world of the concentration camp prove that man cannot escape the influences of his surroundings?
Here, he questioned if life or our circumstance is what entirely determines the quality of our life. His answer was plain and simple: no.
"In the final analysis it becomes clear that the sort of person the prisoner became was the result of an inner decision, and not the result of camp influences alone. Fundamentally, therefore, any man can, even under such circumstances, decide what shall become of him--mentally and spiritually."
Man’s attitude to his existence is what determines life meaning and purpose. We can’t always choose our circumstance but we can choose is how we react to it. Frankl went on,
“And there were always choices to make. Every day, every hour, offered the opportunity to make a decision, a decision which determined whether you would or would not submit to those powers which threatened to rob you of your very self, your inner freedom; which determined whether or not you would become the plaything of circumstance, ...”
If we are miserable, drowning ourselves in our sorrow or in our fate will not improve the situation instead we become what Viktor described as “the plaything of circumstance.”
Randy Pausch, author of the book, The Last Lecture, told the lessons he learned in his last few months of his life after he has been diagnosed with pancreatic cancer. Here is what he has to said:
I can't do anything about the fact that I am going to die. I've been fighting pancreatic cancer. It has now come back after surgery, chemotherapy, and radiation and the doctor told me there is nothing more to do. And I have months to live. I don't like this. I have three little kids. Let's be clear. This stinks. But I can't control the cards I am dealt. Just how I played the hands. Now, if I am not morose enough for you, I'm sorry to disappoint, but I don't choose to be an object of pity. ... I am dying soon, and I am choosing to have fun today, tomorrow, and every day I have left. ... You can choose to take your finite time, and energy, and effort, and you can spend it complaining, or you can spend it playing the game hard.
Our negative and depressive thoughts are not going to get us out of our misery what will is our choice to live above it and do what is necessary to make changes.
Taking Action to Change.
Happiness requires action. It doesn’t have to be THE right action. It does not have to be drastic. It might even be an extremely small action which aims at changing yourself or the circumstance or both. However, it has to be something which allows us to at the end of the day look back and feel proud that we did not succumb to our fate but actually did something to improve and take charge of our lives.
This, in short, is growth or progress. It is a key ingredient to turning our life around. And it is something we all need to do every day to cultivate hope and keep ourselves out of depression–the feeling/belief that we can’t or that we are not in control of our own lives which naturally leads us to take no action which in turn create a self-fulfilling prophecy of how we can’t.
For this very reason, even if you don’t feel like taking any action, you should challenge yourself to take it. Even if it entails you to step outside of your comfort zone, you should still do it. Even if the action does not give you any immediate joy or benefit, you should persevere it. The key is to adapt.
Remember, you can’t always control the circumstance in life. But what you can control is what you do with it. This is what determines your happiness.
A Little Mental Candy For You <3 https://youtu.be/edkbfvJIo_k
Posted with : Understanding of True Happiness


The Input Editor allows the user to modify inputs for existing objects or assign inputs to new objects. When an object is selected, its parameters appear in the Input Editor window, grouped under a number of tabs. If a keyword has a default value assigned, it is shown in the Default column.
Hovering the cursor over a keyword will display a tooltip containing a brief description of the keyword and an example input.
The input for a keyword can be modified by clicking on the entry in the Value column and entering a new value with the appropriate units. Numbers must be entered without spaces or commas and Boolean keywords must take the value TRUE or FALSE (case sensitive). If an entry is made in the Value column, it will overwrite the default. If an input is not valid, an error message will be displayed showing the cause of the error.
Depending on the object, different keyword values will have different data types as shown in the following table.
|
Data Type |
Description |
Examples |
|
Numbers without units |
A number with or without a decimal point. |
5 5.0 |
|
Numbers with units |
A number followed by a unit separated by one or more spaces. The unit can be enclosed by square brackets, if preferred. |
1000 mm 1.0 m 0.001 km 0.001 [km] |
|
Times |
Times can be entered normally as a number and time unit or it can be entered in date/time format. The following formats are supported: hh:mm hh:mm.ss hh:mm:ss.sss, 'YYYY-MM-DD hh:mm' 'YYYY-MM-DD hh:mm:ss' 'YYYY-MM-DD hh:mm:ss.sss' YYYY-MM-DDThh:mm YYYY-MM-DDThh:mm:ss YYYY-MM-DDThh:mm:ss.sss If the date/time format includes a space, the entire text must be enclosed by a pair of single quotes. |
30.4 h 30:24:00.0 '0000-01-02 06:24:00.0' 0000-01-02T06:24:00.0 |
|
Vectors and Points |
Values for the three components followed by a unit. One or more spaces separate the values and unit. If only two values are entered, the z-component is assumed to be zero. The unit can be enclosed by square brackets, if preferred. |
2.0 1.0 0.0 m 2.0 1.0 m 2.0 1.0 0.0 [m] |
|
Expressions |
A formula containing object outputs and/or mathematical functions. Expressions are described in detail in Section 6.1. |
'1 + 2*[Queue1].QueueLength' '2[s] + [Queue1].QueueTimes(1)' |
|
Booleans |
A value of either TRUE or FALSE (case-sensitive). |
TRUE FALSE |
|
Colours |
A colour can be specified by a colour keyword or by RGB values. A list of named colours and their RGB equivalents are given in Section 0. Transparency can be specified by adding a fourth number after the RGB values. |
pink 255 192 203 255 192 203 125 |
|
Strings |
Text enclosed by a pair of single quotes. The single quotes can be omitted if the text does not include any spaces. |
'Quick red fox' Quick_red_fox |
|
Objects |
Specified by the object's name. |
Server1 Queue1 |
Braces are used to delineate distinct entries in a list. For example, a list of two points would be entered as { 0.0 1.0 0.0 m } { 1.0 1.0 0.0 m }. When an input has only one set of inner braces, it can be entered without the inner braces. For instance, { 1 2 3 } can be entered as 1 2 3.
A drop-down menu is available for most types of inputs.