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How to modify a specified commit?
...t into the stage. Now pick and commit any files as you wish. This flow is quite well explained in "git-rebase" man page. See section "Splitting commits". bit.ly/d50w1M
– Diego Pino
Mar 15 '10 at 19:18
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What is the intended use-case for git stash?
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@KikiJewell popped changes are applied on the index - they are not committed. so if you git stash pop twice, you'll lose the distinction between those two change sets.
– Mureinik
Jun 4 '18 at 20:01
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(How) can I count the items in an enum?
...4, but the integer values of the enum values would be way out of the array index range. Using enum values for array indexing is not safe, you should consider other options.
edit: as requested, made the special entry stick out more.
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Check if an apt-get package is installed and then install it if it's not on Linux
... was installed, type:
dpkg -s <packagename>
You can also use dpkg-query that has a neater output for your purpose, and accepts wild cards, too.
dpkg-query -l <packagename>
To find what package owns the command, try:
dpkg -S `which <command>`
For further details, see articl...
How to use Git Revert
...changes necessary to revert the named commits to your working tree and the index, but does not make the commits. In addition, when this option is used, your index does not have to match the HEAD commit. The revert is done against the beginning state of your index.
This is useful when reverting ...
jQuery vs document.querySelectorAll
I heard several times that jQuery's strongest asset is the way it queries and manipulates elements in the DOM: you can use CSS queries to create complex queries that would be very hard to do in regular javascript .
However , as far as I know, you can achieve the same result with document.querySele...
How to detect the device orientation using CSS media queries?
...screen and (orientation:landscape) { … }
The CSS definition of a media query is at http://www.w3.org/TR/css3-mediaqueries/#orientation
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HAproxy - Web负载均衡解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...VERID可在下面使用cookie关键字定义
option httpchk GET /test/index.php
# 开启对后端服务器的健康检测，通过GET /test/index.php来判断后端服务器的健康情况
server php_server_1 10.12.25.68:80 cookie 1 check inter 2000 rise 3 fall 3 weight 2
server ...
Does Python have a ternary conditional operator?
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You can index into a tuple:
(falseValue, trueValue)[test]
test needs to return True or False.
It might be safer to always implement it as:
(falseValue, trueValue)[test == True]
or you can use the built-in bool() to assure a Boo...
MongoDB with redis
...y Zawodny.
MongoDB is interesting for persistent, document oriented, data indexed in various ways. Redis is more interesting for volatile data, or latency sensitive semi-persistent data.
Here are a few examples of concrete usage of Redis on top of MongoDB.
Pre-2.2 MongoDB does not have yet an ex...