diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/enumerable.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/enumerable.rb | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb index 8ebe758078..90d7d2947f 100644 --- a/activesupport/lib/active_support/core_ext/enumerable.rb +++ b/activesupport/lib/active_support/core_ext/enumerable.rb @@ -12,7 +12,7 @@ module Enumerable # # [5, 15, 10].sum # => 30 # ['foo', 'bar'].sum # => "foobar" - # [[1, 2], [3, 1, 5]].sum => [1, 2, 3, 1, 5] + # [[1, 2], [3, 1, 5]].sum # => [1, 2, 3, 1, 5] # # The default sum of an empty list is zero. You can override this default: # @@ -29,9 +29,9 @@ module Enumerable # Convert an enumerable to a hash. # # people.index_by(&:login) - # => { "nextangle" => <Person ...>, "chade-" => <Person ...>, ...} + # # => { "nextangle" => <Person ...>, "chade-" => <Person ...>, ...} # people.index_by { |person| "#{person.first_name} #{person.last_name}" } - # => { "Chade- Fowlersburg-e" => <Person ...>, "David Heinemeier Hansson" => <Person ...>, ...} + # # => { "Chade- Fowlersburg-e" => <Person ...>, "David Heinemeier Hansson" => <Person ...>, ...} def index_by if block_given? result = {} @@ -67,10 +67,10 @@ module Enumerable # Returns a copy of the enumerable without the specified elements. # # ["David", "Rafael", "Aaron", "Todd"].without "Aaron", "Todd" - # => ["David", "Rafael"] + # # => ["David", "Rafael"] # # {foo: 1, bar: 2, baz: 3}.without :bar - # => {foo: 1, baz: 3} + # # => {foo: 1, baz: 3} def without(*elements) reject { |element| elements.include?(element) } end @@ -78,10 +78,10 @@ module Enumerable # Convert an enumerable to an array based on the given key. # # [{ name: "David" }, { name: "Rafael" }, { name: "Aaron" }].pluck(:name) - # => ["David", "Rafael", "Aaron"] + # # => ["David", "Rafael", "Aaron"] # # [{ id: 1, name: "David" }, { id: 2, name: "Rafael" }].pluck(:id, :name) - # => [[1, "David"], [2, "Rafael"]] + # # => [[1, "David"], [2, "Rafael"]] def pluck(*keys) if keys.many? map { |element| keys.map { |key| element[key] } } @@ -115,9 +115,14 @@ end # and fall back to the compatible implementation, but that's much slower than # just calling the compat method in the first place. if Array.instance_methods(false).include?(:sum) && !(%w[a].sum rescue false) - class Array - alias :orig_sum :sum + # Using Refinements here in order not to expose our internal method + using Module.new { + refine Array do + alias :orig_sum :sum + end + } + class Array def sum(init = nil, &block) #:nodoc: if init.is_a?(Numeric) || first.is_a?(Numeric) init ||= 0 |