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Function in JavaScript that can be called only once
...cuted only once, in each time after the first it won't be executed. I know from C++ and Java about static variables that can do the work but I would like to know if there is a more elegant way to do this?
...
How to install Java 8 on Mac
...lable for public download (license change).
First install and update brew from Terminal:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew tap homebrew/cask-versions
brew update
NEW as of June 2019
To install the JDKs from AdoptOpenJDK:
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Using success/error/finally/catch with Promises in AngularJS
...hey also provide exception handling, just like normal code, you can return from a promise or you can throw.
What you'd want in synchronous code is:
try{
try{
var res = $http.getSync("url");
res = someProcessingOf(res);
} catch (e) {
console.log("Got an error!",e);
throw...
How to check if Location Services are enabled?
...rvices: that one which shows a dialog where you may turn on your gps right from the dialog, without showing the settings activity. When user turns gps from that dialog, that statement returns always false, even when gps is on
– Marcelo Noguti
Sep 18 '15 at 14:2...
C# “as” cast vs classic cast [duplicate]
...ator will).
Specifically the as operator only allows for the following (from section 7.9.11 of the C# lang spec)
An identity (§6.1.1), implicit reference (§6.1.6), boxing (§6.1.7), explicit reference (§6.2.4), or unboxing (§6.2.5) conversion exists from the type of E to T.
The type of E or...
How to get a random number in Ruby
...
Use rand(range)
From Ruby Random Numbers:
If you needed a random integer to simulate a roll of a six-sided die, you'd use: 1 + rand(6). A roll in craps could be simulated with 2 + rand(6) + rand(6).
Finally, if you just need a rando...
Compiling/Executing a C# Source File in Command Prompt
How do you compile and execute a .cs file from a command-prompt window?
15 Answers
15
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How to convert an ArrayList containing Integers to primitive int array?
...i -> i).toArray();
What it does is:
getting a Stream<Integer> from the list
obtaining an IntStream by mapping each element to itself (identity function), unboxing the int value hold by each Integer object (done automatically since Java 5)
getting the array of int by calling toArray
Yo...
How to mark a build unstable in Jenkins when running shell scripts
... using TextFinder. Here's some info on it.
Basically you need a .jar file from http://yourserver.com/cli available in shell scripts, then you can use the following command to mark a build unstable:
java -jar jenkins-cli.jar set-build-result unstable
To mark build unstable on error, you can use:
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Stateless and Stateful Enterprise Java Beans
...tire life, there is no swapping or pooling of instances (it may be evicted from memory after passivation to save resources but that's another story) and maintain conversational state. This means that the instance variables of the bean can keep data relative to the client between method invocations. ...