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Is there a MySQL command to convert a string to lowercase?
...d-case. However, I want to convert them all to lowercase. Is there an easy command to do this, either using MySQL or MySQL and PHP?
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How can I select the first day of a month in SQL?
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Is there a command to undo git init?
... Git init'ed a repos with a wrong user, and want to undo it. Is there any command for this? Do I actually have to go in and edit the .git directory?
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How is Docker different from a virtual machine?
...d only part and a write part which are merged together. One could have the common parts of the operating system as read only (and shared amongst all of your containers) and then give each container its own mount for writing.
So, let's say you have a 1 GB container image; if you wanted to use a ful...
Whether a variable is undefined [duplicate]
...ough.You need to do:
if(page_name != '')
For other variables that don't come from something like jQuery.val() you would do this though:
if(typeof page_name != 'undefined')
You just have to use the typeof operator.
sh...
C# 能否获取一个对象所占内存的大小？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...null ConsoleApplication3.Student
延伸阅读： http://blogs.msdn.com/b/cbrumme/archive/2003/04/15/51326.aspx
原文如下：
We don't expose the managed size of objects because we want to reserve the ability to change the way we lay these things out. For example, on some systems we migh...
How to implement a rule engine?
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This snippet compiles the Rules into fast executable code (using Expression trees) and does not need any complicated switch statements:
(Edit : full working example with generic method)
public Func<User, bool> CompileRule(Rule r)
{
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iOS: How to get a proper Month name from a number?
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Documentation for monthSymbols: developer.apple.com/library/mac/#documentation/Cocoa/Reference/…
– firecall
Jan 2 '12 at 3:46
14
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How to get current location in Android [duplicate]
...tant defined by me. Here you can check the documentation developer.android.com/reference/android/location/…, float,android.location.Criteria, android.app.PendingIntent)
– Axxiss
Feb 14 '14 at 10:56
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项目管理实践【六】自动同步数据库【Using Visual Studio with Source Cont...
...g="utf-8"?>
<Project DefaultTargets="All" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<!-- 需要引入MSBuild Community Tasks -->
<Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets"/>
<PropertyGroup>
<!--数据库连接字符串，...