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Why start a shell command with a backslash?
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How to profile a bash shell script slow startup?
...a quick demo/test to show how it work:
for i in {1..4};do echo now;sleep .05;done| date -f - +%N
Sample script:
#!/bin/bash
exec 3>&2 2> >( tee /tmp/sample-$$.log |
sed -u 's/^.*$/now/' |
date -f - +%s.%N >/tmp/sample-$$.tim)
set -x
for ((i=3...
Rails: convert UTC DateTime to another time zone
In Ruby/Rails, how do I convert a UTC DateTime to another time zone?
6 Answers
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What does the arrow operator, '->', do in Java?
While hunting through some code I came across the arrow operator, what exactly does it do? I thought Java did not have an arrow operator.
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Which characters need to be escaped when using Bash?
... E $'\004' 1E E $'\036' 38 - 8 52 - R 6C - l
05 E $'\005' 1F E $'\037' 39 - 9 53 - S 6D - m
06 E $'\006' 20 E \ 3A - : 54 - T 6E - n
07 E $'\a' 21 E \! 3B E \; 55 - U 6F - o ...
Why not use java.util.logging?
For the first time in my life I find myself in a position where I'm writing a Java API that will be open sourced. Hopefully to be included in many other projects.
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Escape double quotes in a string
Double quotes can be escaped like this:
6 Answers
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6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
6个变态的C语言Hello World程序下面的六个程序片段主要完成这些事情：输出Hello, World混乱C语言的源代码下面的所有程序都可以在GCC下编译通过，只有最后一个需要动用C++...下面的六个程序片段主要完成这些事情：
1、输出Hello, W...
Definitive way to trigger keypress events with jQuery
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– Nadia Alramli
May 6 '09 at 23:05
4
Very nice answer. Worth noting that jQuery.Event is avai...
C# short/long/int literal format?
In C / C# / etc. you can tell the compiler that a literal number is not what it appears to be (ie., float instead of double , unsigned long instead of int :
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