@@ -1,5 +1,7 @@ *2.3.0/3.0* +* Added Enumerable#none? to check that none of the elements match the block #1408 [Damian Janowski] + * TimeZone offset tests: use current_period, to ensure TimeZone#utc_offset is up-to-date [Geoff Buesing] * Update bundled TZInfo to 0.3.12 [Geoff Buesing] activesupport/CHANGELOG @@ -104,4 +104,13 @@ module Enumerable size = block_given? ? select(&block).size : self.size size > 1 end + + # Returns true if none of the elements match the given block. + # + # success = responses.none? {|r| r.status / 100 == 3 } + # + def none?(&block) + return true if !block_given? || blank? + !any?(&block) + end end activesupport/lib/active_support/core_ext/enumerable.rb @@ -79,4 +79,14 @@ class EnumerableTests < Test::Unit::TestCase assert ![ 1, 2 ].many? {|x| x > 1 } assert [ 1, 2, 2 ].many? {|x| x > 1 } end + + def test_none + assert [].none? + assert [ 1 ].none? + + assert [].none? {|x| x > 1 } + assert ![ 2 ].none? {|x| x > 1 } + assert ![ 1, 2 ].none? {|x| x > 1 } + assert [ 1, 1 ].none? {|x| x > 1 } + end end activesupport/test/core_ext/enumerable_test.rb 917428bcce7bb22241bfc07daa5d0ddf9d107775 Damian Janowski djanowski damian.janowski@gmail.com http://github.com/rails/rails/commit/f451f0e5cfa358e88ac9d03d813a9c84facd6648 f451f0e5cfa358e88ac9d03d813a9c84facd6648 2008-11-19T01:48:41-08:00 2008-11-18T12:53:06-08:00 Added Enumerable#none? to check that none of the elements match the block [#1408 state:committed] Signed-off-by: David Heinemeier Hansson <david@loudthinking.com> 1b5f2831b934d92f21a8f5ab16ed536ee5e90dc8 David Heinemeier Hansson dhh david@loudthinking.com