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What command means “do nothing” in a conditional in Bash?
Sometimes when making conditionals, I need the code to do nothing, e.g., here, I want Bash to do nothing when $a is greater than "10", print "1" if $a is less than "5", otherwise, print "2":
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libevent对比libev的基准测试 - C/C++ - 清泛网 - 专注C/C++及内核技术
...次发布）是一个高性能事件循环，支持简单的 API、两 Google翻译自：http://libev.schmorp.de/bench.html
本文档简要描述了针对 libevent 和 libev 运行 libevent 基准程序的结果。
Libevent 概述
Libevent（于 2000-11-14 首次发布）是一个高性能事...
Reactjs convert html string to jsx
I'm having trouble dealing with facebook's ReactJS. Whenever I do ajax and want to display an html data, ReactJS displays it as text. (See figure below)
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Is it possible to add dynamically named properties to JavaScript object?
In JavaScript, I've created an object like so:
19 Answers
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How to slice an array in Bash
Looking the "Array" section in the bash(1) man page, I didn't find a way to slice an array.
4 Answers
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How to get year/month/day from a date object?
alert(dateObj) gives Wed Dec 30 2009 00:00:00 GMT+0800
16 Answers
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How to avoid “RuntimeError: dictionary changed size during iteration” error?
... the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is to use list to force a copy of the keys to be made. This one also works in Python 3.x:
for i in list(d):
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Windows batch: echo without new line
What is the Windows batch equivalent of the Linux shell command echo -n which suppresses the newline at the end of the output?
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Split string based on regex
What is the best way to split a string like "HELLO there HOW are YOU" by upper case words (in Python)?
3 Answers
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How to find the foreach index?
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foreach($array as $key=>$value) {
// do stuff
}
$key is the index of each $array element
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