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How to check if all elements of a list matches a condition?
...a generator expression where appropriate):
>>> [x for x in items if x[2] == 0]
[[1, 2, 0], [1, 2, 0]]
If you want to check at least one element is 0, the better option is to use any() which is more readable:
>>> any(flag == 0 for (_, _, flag) in items)
True
...
How to record webcam and audio using webRTC and a server-based Peer connection
....css">
<h1> MediaRecorder API example</h1>
<p>For now it is supported only in Firefox(v25+) and Chrome(v47+)</p>
<div id='gUMArea'>
<div>
Record:
<input type="radio" name="media" value="video" checked id='mediaVideo'>Video
<input...
MFC的多国语言界面的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
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SetThreadLocale(MAKELCID(MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED), SORT_DEFAULT));
设置线程语言为“英语（美国）”的代码如下：
SetThreadLocale(MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT));
设置线程语言要在对话框创建之前...
About .bash_profile, .bashrc, and where should alias be written in? [duplicate]
...!), shell options with set and shopt, etc. For an example, see: My .bashrc
Now, as part of UNIX peculiarity, a login-shell does NOT execute ~/.bashrc but only ~/.profile or ~/.bash_profile, so you should source that one manually from the latter. You'll see me do that in my ~/.profile too: source ~/...
What's the algorithm to calculate aspect ratio?
...integer solution like 16:9 rather than a float:1 solution like 1.77778:1.
If so, what you need to do is find the greatest common divisor (GCD) and divide both values by that. The GCD is the highest number that evenly divides both numbers. So the GCD for 6 and 10 is 2, the GCD for 44 and 99 is 11.
...
What is Func, how and when is it used
...e to leverage the same code representing a pattern (with Select) with two different functions (p => p.Name and p => p.Age).
The alternative would be to write a different version of Select every time you wanted to scan a sequence for a different kind of value. So to achieve the same effect as ...
Generating random numbers in Objective-C
...
You should use the arc4random_uniform() function. It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random...
How do I print a list of “Build Settings” in Xcode project?
... com.apple.compilers.llvm.clang.1_0
GCC_VERSION_IDENTIFIER com_apple_compilers_llvm_clang_1_0
GCC_WARN_ABOUT_RETURN_TYPE YES
GCC_WARN_UNUSED_FUNCTION YES
GCC_WARN_UNUSED_VARIABLE YES
GENERATE_MASTER_OBJECT_...
MySql export schema without data
I'm using a MySql database with a Java program, now I want to give the program to somebody else.
13 Answers
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Stop all active ajax requests in jQuery
...uld use an array keeping track of all pending ajax requests and abort them if necessary.
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