From: matz@... (Yukihiro Matsumoto)
Date: 2004-02-05T09:31:27+09:00
Subject: Re: case with multiple expressions

Hi,

In message "case with multiple expressions"
    on 04/02/05, Hal Fulton <hal9000@hypermetrics.com> writes:

|Is there anything wrong with this kind of solution?
|
|   case [x,y,z]
|     when [1,2,3] then #...
|     when [1,2,4] then #...
|     when [2,2,3] then #...
|     else ...
|   end

Hmm, if we define Array#=== as

  def ===(other)
    self.all?{|item| item === other}
  end

You can do

  case [x, y]
  when [0..50, 150..200]
    color = white
  when [0..100, 0..50]
    color = blue
  when [50..100, 50..200]
    color = gray
  else
    color = black
  end

Just an idea...

							matz.