大约有 30,000 项符合查询结果（耗时：0.0406秒） [XML]
Add unique constraint to combination of two columns
... to insert the row and returning an exception (exceptions are expensive).
http://www.sqlperformance.com/2012/08/t-sql-queries/error-handling
http://www.mssqltips.com/sqlservertip/2632/checking-for-potential-constraint-violations-before-entering-sql-server-try-and-catch-logic/
If you want to preve...
iPhone Simulator - Simulate a slow connection?
...
An app called SpeedLimit
https://github.com/mschrag/speedlimit
Works great.
chris.
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Date format Mapping to JSON Jackson
...u want predicted result. I have found real good tutorial and solution here http://www.baeldung.com/jackson-serialize-dates
There are examples for Date fields but I needed for Calendar fields so here is my implementation:
The serializer class:
public class CustomCalendarSerializer extends JsonSeri...
Format numbers to strings in Python
... tax: $14.07'
>>> d = {'web': 'user', 'page': 42}
>>> 'http://xxx.yyy.zzz/%(web)s/%(page)d.html' % d
'http://xxx.yyy.zzz/user/42.html'
Here are the equivalent snippets but using str.format():
>>> "Name: {0}, age: {1}".format('John', 35)
'Name: John, age: 35'
>&...
STL中map容器使用自定义key类型报错详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...是默认的使用了less进行比较。
关于这个_Pr详解可见：http://www.cnblogs.com/zjfdlut/archive/2011/08/12/2135698.html
解决方法
好了，知道了出错原因，我们就自己重载<操作符了：
bool operator<(const a& a1, const a& a2)
{
if ( a1.m_a>=a2.m_a )
...
Parsing JSON using Json.net
...t;
/// This class encodes and decodes JSON strings.
/// Spec. details, see http://www.json.org/
///
/// JSON uses Arrays and Objects. These correspond here to the datatypes ArrayList and Hashtable.
/// All numbers are parsed to doubles.
/// </summary>
using System;
using System.Collect...
What's the absurd function in Data.Void useful for?
...ost about the ideas behind Conduit which has an example of using absurd.
http://unknownparallel.wordpress.com/2012/07/30/pipes-to-conduits-part-6-leftovers/#running-a-pipeline
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Have the same README both in Markdown and reStructuredText
...ut the same way when rendered as markdown or rendered as reStructuredText: https://gist.github.com/dupuy/1855764 ☺
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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
TLSF源码及算法介绍tlsf-two-level-segregated-fit官网地址：http: www gii upv es tlsf 官网的代码应该是主分支，github上的几个仓库更新不是那么及时。英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator f 官网地址：http://www.gii.upv.es/...
What is %2C in a URL?
...
Check out http://www.asciitable.com/
Look at the Hx, (Hex) column; 2C maps to ,
Any unusual encoding can be checked this way
+----+-----+----+-----+----+-----+----+-----+
| Hx | Chr | Hx | Chr | Hx | Chr | Hx | Chr |
+----+-----+---...