From: Josh Cheek <josh.cheek@...>
Date: 2011-02-25T15:47:09+09:00
Subject: Re: why is $1 in a grep() equal to nil?

--0015173ff7fad09003049d15b234
Content-Type: text/plain; charset=ISO-8859-1

On Thu, Feb 24, 2011 at 8:04 PM, 7stud -- <bbxx789_05ss@yahoo.com> wrote:

>
> $1 is a *global* variable, so saying it doesn't persist outside of a
> block doesn't make any sense.
>
>
It isn't actually global. I don't know the specifics, but I used to worry
about that too, and found out later it was not necessary.

def meth_a
  "a" =~ /(.)/
  puts "in a, $1 = #{$1.inspect}"
end

def meth_b
  "b" =~ /(.)/
  puts "in b, $1 = #{$1.inspect}"
  meth_a
  puts "in b, $1 = #{$1.inspect}"
end

meth_b


# >> in b, $1 = "b"
# >> in a, $1 = "a"
# >> in b, $1 = "b"

--0015173ff7fad09003049d15b234--