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How to create index on JSON field in Postgres?
In PostgreSQL 9.3 Beta 2 (?), how do I create an index on a JSON field? I tried it using the -> operator used for hstore but got the following error:
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How do I set the size of an HTML text box?
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Just use:
textarea {
width: 200px;
}
or
input[type="text"] {
width: 200px;
}
Depending on what you mean by 'textbox'.
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List directory tree structure in python?
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edited Mar 16 '12 at 3:14
answered Mar 15 '12 at 21:29
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What's the best way to iterate over two or more containers simultaneously
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edited Nov 19 '18 at 11:25
answered Sep 25 '13 at 13:19
K...
How to sort a list of objects based on an attribute of the objects?
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edited Sep 9 '19 at 12:57
Dorian Turba
72699 silver badges2020 bronze badges
answered Dec 31 '08 at...
How to check if an appSettings key exists?
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223
MSDN: Configuration Manager.AppSettings
if (ConfigurationManager.AppSettings[name] != null)
{...
String comparison in bash. [[: not found
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edited Jul 23 at 6:31
Abhay
2,1421414 silver badges2525 bronze badges
answered Sep 1 '12 ...
Internet Explorer 11 detection
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Edit 18 Nov 2016
This code also work (for those who prefer another solution , without using ActiveX)
var isIE11 = !!window.MSInputMethodContext && !!document.documentMode;
// true on IE11
// false on Edge and other IEs/brow...
select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术
...。连接如下所示：
select：http://www.cnblogs.com/Anker/archive/2013/08/14/3258674.html
poll：http://www.cnblogs.com/Anker/archive/2013/08/15/3261006.html
epoll：http://www.cnblogs.com/Anker/archive/2013/08/17/3263780.html
今天对这三种IO多路复用进行对比，参考网上和...
Given an emacs command name, how would you find key-bindings ? (and vice versa)
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2
So, I can where-is where-is when I forget C-h w. That's great ! ;)
– Sake
Jun 9 '09 at 0:48
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