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Check if a string matches a regex in Bash script
...]] && echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && echo "yes"
# |^^^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^ ^^^^^^^^^^ ^^^^^^ |
# | | ^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^ |
# | | | ...
jQuery: Wait/Delay 1 second without executing code
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177
$.delay is used to delay animations in a queue, not halt execution.
Instead of using a while ...
Camera 扩展：相机拍照和录像，程序控制拍照、自动拍照实现，而无需点击系...
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Authorize Attribute with Multiple Roles
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189
Try to create custom authorize attribute like this.
public class AuthorizeRolesAttribute : Au...
How to trigger a build only if changes happen on particular set of files
...e stock Git plugin does not have a "included region" feature at this time (1.15). However, someone posted patches on GitHub that work on Jenkins and Hudson that implement the feature you want.
It is a little work to build, but it works as advertised and has been extremely useful since one of my Git...
How to redirect Valgrind's output to a file?
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419
valgrind --log-file="filename"
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How to write to file in Ruby?
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181
The Ruby File class will give you the ins and outs of ::new and ::open but its parent, the IO ...
How can a Java variable be different from itself?
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Class JavaLaunchHelper is implemented in both … libinstrument.dylib. One of the two will be used. Wh
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12 Answers
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Where should signal handlers live in a django project?
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41
I actually like to make them classmethods of the model itself. That keeps everything within one ...