Sha256: ac4345246ec78ad93ff117e510e03ca873fdff50856358050ee678c99c25705c

Contents?: true

Size: 698 Bytes

Versions: 26

Compression:

Stored size: 698 Bytes

Contents

class Hash

  # Returns true if the hash contains
  # _only_ the given keys, otherwise false.
  #
  #   h = { :a => 1, :b => 2 }
  #   h.has_only_keys?( :a, :b )   #=> true
  #   h.has_only_keys?( :a )       #=> false
  #
  def has_only_keys?(*check_keys)
    unknown_keys = self.keys - check_keys
    return unknown_keys.empty?
  end

end


#  _____         _
# |_   _|__  ___| |_
#   | |/ _ \/ __| __|
#   | |  __/\__ \ |_
#   |_|\___||___/\__|
#
=begin test

  require 'test/unit'

  class TCHash < Test::Unit::TestCase

    def test_has_only_keys?
      assert( { :a=>1,:b=>2,:c=>3 }.has_only_keys?(:a,:b,:c) )
      assert( ! { :a=>1,:b=>2,:c=>3 }.has_only_keys?(:a,:b) )
    end

  end

=end

Version data entries

26 entries across 26 versions & 1 rubygems

Version Path
facets-1.0.0 lib/facet/hash/has_only_keys.rb
facets-0.9.0 lib/nano/hash/has_only_keys.rb
facets-1.0.3 packages/core/lib/facet/hash/has_only_keys.rb
facets-1.3.0 lib/facets/core/hash/has_only_keys.rb
facets-1.1.0 lib/facet/hash/has_only_keys.rb
facets-1.2.0 lib/facets/core/hash/has_only_keys.rb
facets-1.2.1 lib/facets/core/hash/has_only_keys.rb
facets-1.3.2 lib/facets/core/hash/has_only_keys.rb
facets-1.3.3 lib/facets/core/hash/has_only_keys.rb
facets-1.3.1 lib/facets/core/hash/has_only_keys.rb
facets-1.4.0 lib/facets/core/hash/has_only_keys.rb
facets-1.4.1 lib/facets/core/hash/has_only_keys.rb
facets-1.4.2 lib/facets/core/hash/has_only_keys.rb
facets-1.4.3 lib/facets/core/hash/has_only_keys.rb
facets-1.4.4 lib/facets/core/hash/has_only_keys.rb
facets-1.4.5 lib/facets/core/hash/has_only_keys.rb
facets-1.7.30 lib/facets/core/hash/has_only_keys.rb
facets-1.7.0 lib/facets/core/hash/has_only_keys.rb
facets-1.7.38 lib/facets/core/hash/has_only_keys.rb
facets-1.7.46 lib/facets/core/hash/has_only_keys.rb