From: Joel VanderWerf <vjoel@...>
Date: 2009-04-29T10:07:25+09:00
Subject: Re: dynamically calling methods that require a block

Barun Singh wrote:
> Is it possible to call methods that require block inputs dynamically
> without resorting to "eval"?  For example, consider:
> 
> a = [1,2,3]
> a.detect{|x| x > 2}
> 
> I want to know if it's possible to do something like the following (this
> doesn't work):
> 
> a.send(:detect, {|x| x > 2})
> 
> I'm using Ruby 1.8.6
> 
> Thanks..

Just pass the block to the send method as you normally would pass a block:

a.send(:detect, &proc {|x| x > 2})
=> 3
a.send(:detect) {|x| x > 2}
=> 3

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407