From: Adam Shelly <adam.shelly@...>
Date: 2006-01-10T03:46:44+09:00
Subject: Re: Iterator Fu Failing Me

why not write a new iterator: it will probably be useful again sometime:

module Enumerable
  def find_first_result
    each {|item| result = yield item; return result if result }
    nil
  end
end

irb(main):075:0> tokens = %w( adam codes in ruby )
=> ["adam", "codes", "in", "ruby"]
irb(main):076:0> classes = [/a/, /b/, /c/]
=> [/a/, /b/, /c/]
irb(main):077:0> elements = tokens.map do |token|
irb(main):078:1*   classes.find_first_result {|kind| kind =~ token}
irb(main):079:1> end
=> [0, 0, nil, 2]


-Adam