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(Note that if a numerical escape is to be followed by a digit, it must be expressed using exactly three digits.) Strings in Lua can contain any 8-bit value, including embedded zeros, which can be specified as '.
A long string starts with an opening long bracket of any level and ends at the first closing long bracket of the same level.
Literals in this bracketed form can run for several lines, do not interpret any escape sequences, and ignore long brackets of any other level.
contents · index · other versions · english · portugus · espaol Lua is an extension programming language designed to support general procedural programming with data description facilities.
It also offers good support for object-oriented programming, functional programming, and data-driven programming.
Lua is intended to be used as a powerful, light-weight scripting language for any program that needs one. This host program can invoke functions to execute a piece of Lua code, can write and read Lua variables, and can register C functions to be called by Lua code.
Through the use of C functions, Lua can be augmented to cope with a wide range of different domains, thus creating customized programming languages sharing a syntactical framework.
The Lua distribution includes a sample host program called , which uses the Lua library to offer a complete, stand-alone Lua interpreter.