Sha256: 210738f24caac52dcfed3dbed67ecf615acc3b59f5d8a8f7f3aeecf60b9a679e
Contents?: true
Size: 698 Bytes
Versions: 26
Compression:
Stored size: 698 Bytes
Contents
module Enumerable
# Iterators ovr each element pairing.
#
# [:a,:b,:c,:d].each_pair { |a,b| puts "#{a} -> #{b}" }
#
# _produces_
#
# a -> b
# c -> d
#
def each_pair #:yield:
e1 = nil
each_with_index do |e,i|
if i % 2 == 0
e1 = e
next
else
yield(e1,e)
end
end
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TCEnumerable < Test::Unit::TestCase
def test_each_pair
r = []
a = [1,2,3,4]
a.each_pair{ |a,b| r << [a,b] }
assert_equal( [[1,2],[3,4]], r )
end
end
=end
Version data entries
26 entries across 26 versions & 1 rubygems