Sha256: ef073d4aa8fc587214182785aa89556efb0a73806f1ea0a5bc82391786aa8be7
Contents?: true
Size: 948 Bytes
Versions: 22
Compression:
Stored size: 948 Bytes
Contents
require 'facet/hash/self/zipnew'
class Hash
# Returns a copy of the hash with _values_ arranged
# in new random order.
#
# h = {:a=>1, :b=>2, :c=>3}
# h.shuffle_hash #=> {:b=>2, :c=>1, :a>3}
#
def shuffle
Hash.zipnew( keys.sort_by{Kernel.rand}, values.sort_by{Kernel.rand} )
end
# Destructive shuffle_hash. Arrange the values in
# a new random order.
#
# h = {:a => 1, :b => 2, :c => 3}
# h.shuffle_hash!
# h #=> {:b=>2, :c=>1, :a=>3}
#
def shuffle!
self.replace( shuffle )
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCHash < Test::Unit::TestCase
def test_shuffle
h = {:a=>1, :b=>2, :c=>3 }
assert_nothing_raised { h.shuffle }
end
def test_shuffle!
h = {:a=>1, :b=>2, :c=>3 }
assert_nothing_raised { h.shuffle! }
end
end
=end
Version data entries
22 entries across 22 versions & 1 rubygems