From: Robert Klemme <bob.news@...>
Date: 2003-04-08T17:33:14+09:00
Subject: Re: a question about regexp

I'd say it should read

def mygrep( exp )
  ar = [ "element1", "element2" ]
  ar.grep( exp ) { |e|
    # works...
    print "grep: #$&\n"
    yield e
  }
end

mygrep( /(.*)/ ) { |e|
  # does work now
  print "mygrep: #{e}\n"
}

I would not have the block rely on some global var being set.

    robert

"Ben Thomas" <ben.thomas@wickedstudios.com> schrieb im Newsbeitrag
news:_4hka.1431$u13.938880113@news.nnrp.ca...
> Hi,
>
> I'm trying to make the following code works but I don't know how...
>
> -----------------------------------------------------
> def mygrep( exp )
>   ar = [ "element1", "element2" ]
>   ar.grep( exp ) { |e|
>     # works...
>     print "grep: #$&\n"
>     yield e
>   }
> end
>
> mygrep( /(.*)/ ) { |e|
>   # doesn't work...
>   print "mygrep: #$&\n"
> }
>
> -----------------------------------------------------
>
> Displaying $& in the inner loop of grep works fine, but when it enter my
own
> block, $& is put back to nil. Is there a way to keep the value of $&
(and
> all others $1...)?
>
> Thankx,
> Ben.
>
>