A Look at Lua
Although taking a look at embedding and extending Lua is outside the scope of this article, I touch on a few concepts here. First, the Lua API is very straightforward. Its design eliminates the need for manual reference when embedded in C code (unlike Python's API). Like the language, Lua's C API (for embedding) is fairly minimalistic. If you need advanced functionality, you can use a secondary library that is primarily made up of preprocessor macros.
Second, C and C++ are not the only languages in which Lua can be embedded. Tao.Lua provides straight .NET and Mono bindings to Lua, and LuaJava allows scripts written in Lua to manipulate Java components. LuaJava allows Java components to be accessed from Lua with the same syntax that Lua uses for accessing its native objects. It also allows Java to use a Lua interface so that any interface can be implemented in Lua and passed as a parameter to any method. The method's result (when called in the Java program) is called in Lua, and the result is sent back to Java.
Lua is a flexible, powerful, compact language that can be used and extended in myriad situations. Its focus on simplicity makes for easy debugging and has attracted many users. Its simple, powerful syntax provides flexibility because of Lua's metamechanisms. The small, fast interpreter uses less resources than Python, and its syntax allows for easier code readability. Its simple C API makes embedding a breeze. Whether you are doing data processing, GUIs or game programming, you will find a use for Lua.
Joseph Quigley has been a Linux user for more than two years. He enjoys fiddling with different Linux distros and exploring new programming languages.
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