Lua Quick Start Guide

Math operators

All of the following are binary mathematical operators. The meta method for each of these operators takes two arguments, the left- and the right-hand side of the equation. Each of the functions takes the following general form:

meta = {  __<method> = function(left, right)    -- Do stuff  end}

Here are the names and a brief description of each binary mathematical meta method:

• __add: Addition, when writing "table + object" or "object + table"
• __sub: Subtraction, when writing "table - object" or "object - table"
• __mul: Multiplication, when writing "table * object" or "object * table"
• __div: Division, when writing "table / object" or "object / table"
• __mod: Modulo, when writing "table % object" or "object % table"
• __pow: Involution ...