From: Martin DeMello <martindemello@...>
Date: 2003-01-23T07:41:52+09:00
Subject: Re: Applying an operator to a list

Travis Whitton <whitton@atlantic.net> wrote:
> Hello all, I have a quick question:
> Is it possible to create a Lisp style apply function with Ruby, and
> would I have to use eval to create one? The function would work as
> follows:
> 
> [1, 2, 3].apply('+'.intern) # => 6
> [2, 3, 4].apply('*'.intern) # => 24

But all apply does in lisp is call a function and pass it the rest of
the arguments as a list. The semantic definition of +(1,2,3) is an
entirely separate issue.

Along vaguely similar lines, take a look at
http://www.rubygarden.org/ruby?AutoMap.

martin