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What is a mutex?
... a lock request to the OS. When the OS detects that the mutex was released from a thread, it merely gives it to you, and lock() returns - the mutex is now yours and only yours. Nobody else can steal it, because calling lock() will block him. There is also try_lock() that will block and return true w...
What is an initialization block?
...t the need of any instances. Therefor the correct access of static members from external class (class in which they are not defined) is by using the class name following by dot and then the static member, which you want to access (template: <CLASS_NAME>.<STATIC_VARIABLE_NAME>).
Now let'...
pg_config executable not found
...try also installing libpq-dev
sudo apt-get install libpq-dev python-dev
From the article: How to install psycopg2 under virtualenv
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How to link to a named anchor in Multimarkdown?
...
Taken from the Multimarkdown Users Guide (thanks to @MultiMarkdown on Twitter for pointing it out)
[Some Text][]will link to a header named “Some Text”
e.g.
### Some Text ###
An optional label of your choosing to help dis...
How to call a method after bean initialization is complete?
... really is the best solution, in my opinion.
It keeps your code decoupled from the Spring API (@PostConstruct is in javax.*)
It explicitly annotates your init method as something that needs to be called to initialize the bean
You don't need to remember to add the init-method attribute to your sprin...
UTF-8, UTF-16, and UTF-32
...ong. But that is not the context. The context of memory requirements comes from the fact that the question (and answer) is comparing UTF-8, UTF-16 and UTF-32, which will all encode Asian text but use differing amounts of memory/storage. It follows that their relative goodness would naturally be enti...
Batch file: Find if substring is in string (not in a file)
...% bit will replace a bcd in str1 with an empty string, making it different from the original.
If the original didn't contain a bcd string in it, the modified version will be identical.
Testing with the following script will show it in action:
@setlocal enableextensions enabledelayedexpansion
@ech...
Predicate Delegates in C#
...
Leading on from Andrew's answer with regards to c#2 and c#3 ... you can also do them inline for a one off search function (see below).
using System;
using System.Collections.Generic;
class Program
{
static void Main()
{
...
Viewing unpushed Git commits
...
All the other answers talk about "upstream" (the branch you pull from).
But a local branch can push to a different branch than the one it pulls from.
master might not push to the remote tracking branch "origin/master".
The upstream branch for master might be
Random / noise functions for GLSL
...us permutations of the idea to make it easier to derive your own functions from.
/*
static.frag
by Spatial
05 July 2013
*/
#version 330 core
uniform float time;
out vec4 fragment;
// A single iteration of Bob Jenkins' One-At-A-Time hashing algorithm.
uint hash( uint x ) {
x += ...