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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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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...
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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LINQ Using Max() to select a single row
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Why does find -exec mv {} ./target/ + not work?
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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 ...
Fixed size queue which automatically dequeues old values upon new enques
I'm using ConcurrentQueue for a shared data structure which purpose is holding the last N objects passed to it (kind of history).
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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...
How to split a comma-separated value to columns
...S Surname
FROM Split_Names
and also check the link below for reference
http://jahaines.blogspot.in/2009/06/converting-delimited-string-of-values.html
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