From: Michael Geary <Mike@...>
Date: 2004-07-10T01:47:31+09:00
Subject: Re: I love Ruby

> > why are 'begin...end' and { } not always equivalent?

Kaspar Schiess wrote:
> This comes up once in a while, tell me if this answer is short enough:
> [indentation added]
>
> def foo(arg=nil)
>     if block_given?
>         puts 'foo got block'
>     end
> end
>
> def bar(arg=nil)
>     if block_given?
>         puts 'bar got block'
>     end
> end
>
> foo bar do end  # > foo got block
> foo bar {}  # > bar got block

That is very helpful, thanks.

One thing I don't understand: *Why* does it work this way? What is the
purpose of having different precedence for {} and do...end? It's always
seemed a bit confusing to me, so knowing the purpose for this distinction
would help keep it straight.

Thanks,

-Mike