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Double negation (!!) in javascript - what is the purpose? [duplicate]
...though, because it’s only used as the condition of the conditional operator, which will determine truthiness in the same way.
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Move (or “Undo”) last git commit to unstaged area [duplicate]
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"And otherwise"... these words doesn't make any sense in context
– PandaWood
Nov 24 '16 at 5:49
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Regex: ?: notation (Question mark and colon notation) [duplicate]
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I am going to guess this is more efficient too, since it does not need to hold the groups in memory for backreference use...
– tmn
Apr 29 '15 at 2:56
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Add Favicon to Website [duplicate]
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Simply put a file named favicon.ico in the webroot.
If you want to know more, please start reading:
Favicon on Wikipedia
Favicon Generator
How to add a Favicon by W3C (from 2005 though)
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Python way of printing: with 'format' or percent form? [duplicate]
In Python there seem to be two different ways of generating formatted output:
4 Answers
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PHP string “contains” [duplicate]
...t would be the most efficient way to check whether a string contains a "." or not?
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数据实时刷新/动态数据交换 技术，DDE or RTD？ - C/C++ - 清泛网 - 专注C/C++及内核技术
数据实时刷新/动态数据交换 技术，DDE or RTD？从Excel 2002开始，Excel引入了一种新的查看和更新实时数据的机制，即real-time data简称RTD函数，他是一种Push-Pull的方式，及在需要更 从Excel 2002开始，Excel引入了一种新的查看和更新实...
/usr/include/c++/4.9/bits/stl_iterator_base_types.h:165:53: error: ‘i...
/usr/include/c++/4.9/bits/stl_iterator_base_types.h:165:53: error: ‘int’ is not a class, struct, or union type先看下面的代码(来自:SO)：#include <iostream>#include <cmath>#include <vector>using namespace std;double distance(int a, in...先看下面的代码(来自: SO)：
#include <i...
【解决】remctl.so: cannot open shared object file: No such file or dir...
【解决】remctl.so: cannot open shared object file: No such file or directory缺少lib库文件，apt安装即可：apt-get install libremctl*缺少lib库文件，apt安装即可：
apt-get install libremctl*
linux,remctl
Building a notification system [closed]
I am at the start of building a Facebook style notification system for our page (social gaming type) and I'm now researching what would be the best way to design such system. I'm not interested in how to push notifications to the user or anything like that (for now even). I am researching how to bui...