From: Joel VanderWerf <vjoel@...>
Date: 2003-01-15T08:40:44+09:00
Subject: Re: Extracting elements from an array.

Daniel Carrera wrote:
> Hello,
> 
> I have a question about Enumerable#grep or perhaps Enumerable#map.
> 
> I have an array and I want to extract the entries that follow certain
> criteria.  I'd like to do something like:
> 
> array.grep { |x| valid?(x) }
> or
> array.map { |x| valid(x) ? x : return }

array.select { |x| valid?(x) }