From: David Alan Black <dblack@...>
Date: 2002-07-27T23:55:46+09:00
Subject: Re: merge procs

Hello --

On Sat, 27 Jul 2002, Tom Sawyer wrote:

> okay, i've been staring blankly at this thing for almost 2 days now. i
> can't seem to think of a solution.
>
> the problem i'm having can be solved if i can get two seperate Procs to
> execute under the same scope:
>
> p = Proc.new {
>   x = 10
> }
>
> q = Proc.New {
>   puts "i know what x is #{x}"
> }
>
> r = p + q  # how?
>
>

If x comes into scope before the procs are defined, they can both
see x:

  x = nil
  pr1 = proc { x = 10 }
  pr2 = proc { puts "x is #{x}" }

  pr1.call
  pr2.call   # x is 10

> in general my problem is that i need to keep one processes seperate so
> that it is reusable.

I don't follow that -- ?


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav