From c7a37c10ade8372c712be01a7e4ddbe8785c5139 Mon Sep 17 00:00:00 2001 From: Todd Bealmear Date: Sun, 1 Mar 2015 17:44:36 -0800 Subject: Add Enumerable#without --- activesupport/lib/active_support/core_ext/array/grouping.rb | 12 ++++++++++++ activesupport/lib/active_support/core_ext/enumerable.rb | 11 +++++++++++ 2 files changed, 23 insertions(+) (limited to 'activesupport/lib/active_support/core_ext') diff --git a/activesupport/lib/active_support/core_ext/array/grouping.rb b/activesupport/lib/active_support/core_ext/array/grouping.rb index 87ae052eb0..b3ada47880 100644 --- a/activesupport/lib/active_support/core_ext/array/grouping.rb +++ b/activesupport/lib/active_support/core_ext/array/grouping.rb @@ -113,4 +113,16 @@ class Array results end end + + # Returns a copy of the Array without the specified elements. + # + # people = ["David", "Rafael", "Aaron", "Todd"] + # people.without "Aaron", "Todd" + # => ["David", "Rafael"] + # + # Note: This is an optimization of `Enumerable#without` that uses `Array#-` + # instead of `Array#reject` for performance reasons. + def without(*elements) + self - elements + end end diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb index 1343beb87a..d699cf4241 100644 --- a/activesupport/lib/active_support/core_ext/enumerable.rb +++ b/activesupport/lib/active_support/core_ext/enumerable.rb @@ -60,6 +60,17 @@ module Enumerable def exclude?(object) !include?(object) end + + # Returns a copy of the enumerable without the specified elements. + # + # ["David", "Rafael", "Aaron", "Todd"].without "Aaron", "Todd" + # => ["David", "Rafael"] + # + # {foo: 1, bar: 2, baz: 3}.without :bar + # => {foo: 1, baz: 3} + def without(*elements) + reject { |element| element.in?(elements) } + end end class Range #:nodoc: -- cgit v1.2.3