From: Michael Neumann <neumann@...>
Date: 2001-07-17T18:14:03+09:00
Subject: [ruby-talk:17974] Re: {} -vs- do/end blocks

Matt Armstrong wrote:
> I have a beginner Ruby question.  You can do this:
> 
>     @foo.each { |i|
>         ...
>     }
> 
> Or you can do this:
> 
>     @foo.each do |i|
>         ...
>     end
> 
> Why the two forms?  What are the advantages of each?

They differ only in precedence:

  @foo.each aMethod { |i| 
    ...
  }

is the same as

  x = aMethod { |i| .. }
  @foo.each x

whereas 

  @foo.each aMethod do |i|
    ...
  end

is

  @foo.each( aMethod ) do |i|
    ...
  end



Regards,

  Michael


-- 
Michael Neumann
merlin.zwo InfoDesign GmbH
http://www.merlin-zwo.de