Lua check if method exists

use instance.myMethod or instance["myMethod"]

The colon syntax is only allowed in function calls and function definitions.

instance:myMethod() is short for instance.myMethod(instance)

function Class:myMethod() end is short for function Class.myMethod(self) end

function Class.myMethod(self) end is short for Class["myMethod"] = function (self) end

Maybe now it becomes obvious that a method is nothing but a function value stored in a table field using the method's name as table key.

So like with any other table element you simply index the table using the key to get the value.

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