Category:Libraries

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A library is a collection of programming instructions which can be reused in multiple programs. This allows code to be written once, then reused by multiple programs. Some libraries allow access to hardware-specific or operating system-specific features, such as DirectX, OpenGL and glibc. Others, such as pcre or JAMA, provide code which might be needed by multiple programs. Such libraries prevent the programmer from having to reinvent the wheel every time he faces a certain problem, or needs a particular facility (such as regular expressions or matrix mathematics).

Main article: Library.