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The English Wikipedia has several templates and Lua modules which can format or manipulate strings.In this context a "string" is any piece of text forming part of a page. This help page covers a few useful techniques; look in the navbox below for the full catalogue of templa
Functions can return any kind of value — including a function. This is a powerful feature that can readily confuse the beginner. If you set a = mw. ustring. gmatch (text, "(.)"), the result assigned to a will be a function, not a string character!
The string-search functions in Lua script can run extremely fast, comparing millions of characters per second. For example, a search of a 40,000-character article text, for 99 separate words (passed as 99 parameters in a template), ran within one second of Lua CPU clock time.
For function that manipulate strings, modern object-oriented languages, like C# and Java have immutable strings and return a copy (in newly allocated dynamic memory), while others, like C manipulate the original string unless the programmer copies data to a new string.
LuaJIT, a just-in-time implementation of Lua, has an FFI that allows "calling external C functions and using C data structures from pure Lua code". [4] [5]: 35 Nim has an FFI which enables it to use source from C, C++, and Objective-C. It can also interface with JavaScript.
Historically, the data structure used as a string intern pool was called an oblist (when it was implemented as a linked list) or an obarray (when it was implemented as an array). Modern Lisp dialects typically distinguish symbols from strings; interning a given string returns an existing symbol or creates a new one, whose name is that string ...
Wikipedia:Lua style guide – standards to improve the readability of code through consistency "What do converted templates look like?" (slideshow) Help:Lua debugging – a how-to guide about debugging Lua modules; Help:Lua for beginners – basic tutorial and pointers; Wikipedia:Lua string functions – string performance considerations and limits
REs are part of the language core library using PCRE built-in and an optional wrapper for (C code) ICU is available. Lua: Lua.org: MIT License: Uses simplified, limited dialect; can be bound to more powerful library, like PCRE or an alternative parser like LPeg. Mathematica: Wolfram: Proprietary.NET: MSDN: MIT License [Note 2] [Note 3] Nim: nim ...