String manipulation (or string handling) is a mechanism or a library feature of most programming languages that provides the capabilities of performing various operations on strings. Typically such operations include performing basic tasks such as concatenation, copying, tokenization, searching, and replacing.

Typically, most programming languages provide a string data type that holds a sequence of characters. Such types often expose a set of functions and various other low-level functionality for manipulating the contained characters.

Below is a summary of various string manipulation facilities in different languages.

ALGOL

Main article: String manipulation

C#

Main article: String manipulation

C

Main article: String handling

C++

Main article: String manipulation

Delphi

Main article: String manipulation

Go

Main article: String manipulation

Haskell

Main article: String manipulation

Java

Main article: String manipulation

JavaScript

Main article: String manipulation

Lua

Main article: String manipulation

mIRC

Main article: String manipulation

PHP

Main article: String manipulation

Python

Main article: String manipulation

Ruby

Main article: String manipulation