Editing WoW:Common Lua shortcuts (section)

== Colon syntax for defining methods ==
The colon syntax is used for defining methods -- functions that have an implicit first parameter ''self''. The following function definitions are equivalent:
 t = {};
 function t:foo(bar) end
 function t.foo(self, bar) end

When you call a function using the colon syntax, you implicitly supply the table left of the colon as the first argument to the function. The following two function calls are equivalent:
 t:foo("baz");
 t.foo(t, "baz");

This notation is frequently used to emulate something resembling objects.