From: Daniel Brockman <daniel@...>
Date: 2005-08-12T12:31:56+09:00
Subject: Re: anonym variable $_ and foreach similar in Ruby ?

ngoc <ngoc@yahoo.com> writes:

> In perl
>
>    print $_, "\n" foreach (@array);
>
> In Ruby
>
>    array.each { |e| print e, "\n" }
>
> or
>
>    array.each do |e| print e, "\n" end
>
> So |e| is similar to $_. But I can not say
>
>    { |e| print e, "\n"} array.each
>
> because of block as argument and OO issue.

The following syntax comes out naturally for Ruby,

   print e, "\n" for e in array

but Matz does not want to allow it because he believes that
referencing a variable before binding it is too confusing.

> In addition, it looks a little bit complicated in Ruby.
> I think in THIS CASE perl is more elegant than Ruby?

Although I do loathe the forced dummy variable `e', I think
you could come up with lots of better examples of where Perl
code is more elegant than the equivalent Ruby.

-- 
Daniel Brockman <daniel@brockman.se>