String

Supported platforms:
Available since: Gideros 2011.6

Description

This library provides generic functions for string manipulation, such as finding and extracting substrings, and pattern matching.

When indexing a string in Lua, the first character is at position 1 (not at 0, as in C). Indices are allowed to be negative and are interpreted as indexing backwards, from the end of the string. Thus, the last character is at position -1, and so on.

The string library provides all its functions inside the table string. It also sets a metatable for strings where the __index field points to the string table. Therefore, you can use the string functions in object-oriented style. For instance, string.byte(s, i) can be written as s:byte(i).

The string library assumes one-byte character encodings

Methods string.byte returns numerical code string.char returns a string built from 0 or more integers string.dump returns binary representation of function, used with loadstring string.find matches pattern in s, returns start,end indices, else nil string.format returns formatted string, printf-style string.gmatch returns iterator function that returns next captures from pattern pat on s string.gsub returns copy of s with pat replaced by repl, and substitutions made string.len returns string length string.lower returns string with letters in lower case string.match searches a string for a pattern string.rep returns string with n copies of string s string.sub returns substring from index i to j of s string.upper returns string with letters in upper case

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