From: Wilson Bilkovich <wilsonb@...>
Date: 2007-09-09T12:30:39+09:00
Subject: Re: Bug in lambda?

On 9/8/07, kevin cline <kevin.cline@gmail.com> wrote:
> This looks like a pretty serious bug.  It seems that lambda-
> expressions are not properly localizing their formal arguments:
>
> bash-3.2$ ruby --version
> ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32]
>
> bash-3.2$ cat lambda-bug.rb
> a = 0
> f = lambda { |a| a }
> puts "a = #{a}"
> puts "f.call(1) => #{f.call(1)}"
> puts "now a = #{a}"
>
> bash-3.2$ ruby lambda-bug.rb
> a = 0
> f.call(1) => 1
> now a = 1
>

This is the expected behavior of Ruby 1.8.
'lambda' and 'proc' are expected to diverge further in future versions.