From: Sharon Phillips <phillipsds@...>
Date: 2007-08-01T15:51:30+09:00
Subject: Re: Dynamic method call

> I'm trying, for the purpose of making something similar to a  
> grammar, to do
> this
>
> if_a_condition_is_true(condition, "method_name(arg1, arg2)")
>
> where
>
> def method_name(arg1, arg2)
> #do something
> end
>
> i've tried many way to implement
>
> def if_condition_is_true(condition , action)
> #such as
> eval(action)
> #or
> call self.method(action)
>
> end
>
> but noone worked, i've trying googling a bit but no chances. Have  
> you got an
> idea on how to call dynamically a method, with his arguments?

Hi,
I'm not sure of why you need to implement it like this, but that's up  
to you.
This works for me:

def if_condition_is_true(condition , action)
	eval(action) if condition
end

def method_name(arg1, arg2)
	puts arg1+ arg2
end

if_condition_is_true(true, "method_name(2, 3)")

Cheers,
Dave