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PostgreSQL: Difference between text and varchar (character varying)
...it's all varlena (variable length array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes too much space when dealing with values shorter than n (pads them to n)...
Makefile经典教程（入门必备） - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...的话，相信大家对这个人并不比我陌生，这是他的主页：http://www.stallman.org/ 。
第二位是：Roland McGrath
个人主页是：http://www.frob.com/~roland/ ，下面是他的一些事迹：
1） 合作编写了并维护GNU make。
2） 和Thomas ...
What MIME type should I use for CSV?
I've seen application/csv used and also text/csv .
5 Answers
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What is a raw type and why shouldn't we use it?
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Best way to implement Enums with Core Data
What is the best way to bind Core Data entities to enum values so that I am able to assign a type property to the entity? In other words, I have an entity called Item with an itemType property that I want to be bound to an enum, what is the best way of going about this.
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How to set time zone of a java.util.Date?
I have parsed a java.util.Date from a String but it is setting the local time zone as the time zone of the date object.
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Convert JSON String To C# Object
...est\":\"some data\" }");
More information can be found in this tutorial:
http://www.codeproject.com/Tips/79435/Deserialize-JSON-with-Csharp.aspx
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What is the easiest way to initialize a std::vector with hardcoded elements?
I can create an array and initialize it like this:
29 Answers
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Timing a command's execution in PowerShell
Is there a simple way to time the execution of a command in PowerShell, like the 'time' command in Linux?
I came up with this:
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Cast List to List
How can I cast List<Client> to List<IDic> ?
8 Answers
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