LuaFunctions


Syntax

  • funcname = function(paramA, paramB, ...) body; return exprlist end -- a simple function
  • function funcname(paramA, paramB, ...) body; return exprlist end -- shorthand for above
  • local funcname = function(paramA, paramB, ...) body; return exprlist end -- a lambda
  • local funcname; funcname = function(paramA, paramB, ...) body; return exprlist end -- lambda that can do recursive calls
  • local function funcname(paramA, paramB, ...) body; return exprlist end -- shorthand for above
  • funcname(paramA, paramB, ...) -- call a function
  • local var = var or "Default" -- a default parameter
  • return nil, "error messages" -- standard way to abort with an error

Remarks

Functions are usually set with function a(b,c) ... end and rarely with setting a variable to an anonymous function (a = function(a,b) ... end). The opposite is true when passing functions as parameters, anonymous functions are mostly used, and normal functions aren't used as often.