diff options
Diffstat (limited to 'activesupport/lib/active_support')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/array.rb | 1 | ||||
| -rw-r--r-- | activesupport/lib/active_support/core_ext/array/extract.rb | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/array.rb b/activesupport/lib/active_support/core_ext/array.rb index 6d83b76882..a2569c798b 100644 --- a/activesupport/lib/active_support/core_ext/array.rb +++ b/activesupport/lib/active_support/core_ext/array.rb @@ -3,6 +3,7 @@ require "active_support/core_ext/array/wrap" require "active_support/core_ext/array/access" require "active_support/core_ext/array/conversions" +require "active_support/core_ext/array/extract" require "active_support/core_ext/array/extract_options" require "active_support/core_ext/array/grouping" require "active_support/core_ext/array/prepend_and_append" diff --git a/activesupport/lib/active_support/core_ext/array/extract.rb b/activesupport/lib/active_support/core_ext/array/extract.rb new file mode 100644 index 0000000000..cc5a8a3f88 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/array/extract.rb @@ -0,0 +1,21 @@ +# frozen_string_literal: true + +class Array + # Removes and returns the elements for which the block returns a true value. + # If no block is given, an Enumerator is returned instead. + # + # numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] + # odd_numbers = numbers.extract! { |number| number.odd? } # => [1, 3, 5, 7, 9] + # numbers # => [0, 2, 4, 6, 8] + def extract! + return to_enum(:extract!) { size } unless block_given? + + extracted_elements = [] + + reject! do |element| + extracted_elements << element if yield(element) + end + + extracted_elements + end +end |