From: jweirich@...
Date: 2001-12-31T15:26:25+09:00
Subject: [ruby-talk:29817] Re: Proc.class vs yield

>>>>> "Michael" == Michael Lucas-Smith <s3225202@student.anu.edu.au> writes:

    Michael> Otherwise, you could end up writing some code along the lines of:

    Michael> def childrenOf (aPersonName, people)
    Michael>   catch (:found) { |person| return person.children }
    Michael>   catch (:none) { return Array.new }
    Michael>   people.detect { |person| person.name = aPersonName }
    Michael> end

    Michael> but now the method is backwards and counter intuitive.

How about ... ?

  def children_of(name, people)
    if person = people.detect { |who| who.name == name }
      person.children
    else
      Array.new
    end
  end

-- 
-- Jim Weirich     jweirich@one.net    http://w3.one.net/~jweirich
---------------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct, 
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)