From: Dossy <dossy@...>
Date: 2002-09-20T23:55:21+09:00
Subject: Re: Checking hash key's and values, with case insensitivity

On 2002.09.20, Khurram <khabibiuf@hotmail.com> wrote:
> How can I check hash keys and values without case sensitivity?
> Specifically I'm referring to the hash ".has_key?" and ".has_value?"
> methods.  I believe these are case sensitive by default.

    class Hash
      def has_ikey?(key)
        self.keys.map { |key| key.upcase }.member? key.upcase
      end
    end

    hash = {"foo" => 1, "bar" => 2}

    hash.has_ikey? "foo"    # => true
    hash.has_ikey? "FOO"    # => true
    hash.has_ikey? "Foo"    # => true

    hash.has_ikey? "quux"   # => false

-- Dossy
    
-- 
Dossy Shiobara                       mail: dossy@panoptic.com 
Panoptic Computer Network             web: http://www.panoptic.com/ 
  "He realized the fastest way to change is to laugh at your own
    folly -- then you can let go and quickly move on." (p. 70)