Library (computing)

Library (computing) is a term used to describe a set of pre-compiled code that is stored and used for multiple projects. It is a set of shared resources, which can include routines, classes, and variables that can be used across multiple applications. They are usually written in a programming language such as C or C++, and reside in a directory or package.

Library functions are reusable pieces of code that can be used in a wide variety of programming projects, from commercial software to open source projects. Libraries can make programming faster, easier, and more efficient by reducing the amount of code that needs to be written and maintained. By providing standardized functions, libraries can also help improve the reliability and maintainability of applications.

There are two types of library functions: static and dynamic. Static libraries are compiled into a program and are loaded into memory as part of the executable. Dynamic libraries are loaded into memory when the program is started and can be used while the program is running.

Library functions can also be used for security and optimization. By providing a secure environment for running code, libraries can help prevent malicious code from exploiting applications. Libraries can also help improve the performance of applications by providing optimized code that can take advantage of system resources more efficiently.

Libraries are an important part of software development and are used extensively in the world of computing. They provide a set of tools that can help developers create more functional and powerful applications.