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OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
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2.2 easy_pool_t :内存池，和nginx的内存池实现几乎一样，见http://www.alidata.org/archives/1390 它不是一个全局的内存池，libeasy中可以有很多个，比如对于每个新的连接产生一个easy_pool_t
2.3 easy_buf_t : 用于管理连接的输入输出缓冲区
#d...
What is the difference between List (of T) and Collection(of T)?
I've seen them used in a lot of the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
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How does std::forward work? [duplicate]
I know what it does and when to use it but I still can't wrap my head around how it works. Please be as detailed as possible and explain when std::forward would be incorrect if it was allowed to use template argument deduction.
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Get Android .apk file VersionName or VersionCode WITHOUT installing apk
...lagged for upgrade/installation.
#/system/bin/sh
SERVER_LIST=$(wget -qO- "http://demo.server.com/apk/" | grep 'href' | grep '\.apk' | sed 's/.*href="//' | \
sed 's/".*//' | grep -v '\/' | sed -E "s/%/\\\\x/g" | sed -e "s/x20/ /g" -e "s/\\\\//g")
LOCAL_LIST=$(for APP in $(pm list packa...
ATL正则表达式库使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
... return 0;
}
CAtlREMatchContext<> mcUrl;
if (!reUrl.Match( "http://search.microsoft.com/us/Search.asp?qu=atl&boolean=ALL#results",
&mcUrl))
{
// Unexpected error.
return 0;
}
for (UINT nGroupIndex = 0; nGroupIndex < mcUrl.m_uNumGroups;
++nGr...
Wrap a delegate in an IEqualityComparer
Several Linq.Enumerable functions take an IEqualityComparer<T> . Is there a convenient wrapper class that adapts a delegate(T,T)=>bool to implement IEqualityComparer<T> ? It's easy enough to write one (if your ignore problems with defining a correct hashcode), but I'd like to know...
Generate a random point within a circle (uniformly)
...) * sin(angle)
This will give you uniform point distribution on a disk.
http://mathworld.wolfram.com/DiskPointPicking.html
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Format SQL in SQL Server Management Studio
... formatter, and other options.
It's available for immediate/online use at http://poorsql.com, and just today graduated to "version 1.0" (it was in beta version for a few months), having just acquired support for MERGE statements, OUTPUT clauses, and other finicky stuff.
The SSMS Add-in allows you ...
boost Composite keys - C/C++ - 清泛网 - 专注C/C++及内核技术
boost Composite keysComposite keysIn relational databases, composite keys depend on two or more fields of a given table The analogous concept in Boost MultiIndex is Composite keys
In relational databases, composite keys depend on two or more fields of a given table. The analogous concept in Boos...
LINQ Select Distinct with Anonymous Types
So I have a collection of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly:
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