hometown/lib/enumerable.rb
luigi 087ed84367
Optimize map { ... }.compact calls (#15513)
* Optimize map { ... }.compact

using Enumerable#filter_map, supported since Ruby 2.7

* Add poyfill for Enumerable#filter_map
2021-01-10 00:32:01 +01:00

27 lines
545 B
Ruby

# frozen_string_literal: true
module Enumerable
# TODO: Remove this once stop to support Ruby 2.6
if RUBY_VERSION < '2.7.0'
def filter_map
if block_given?
result = []
each do |element|
res = yield element
result << res if res
end
result
else
Enumerator.new do |yielder|
result = []
each do |element|
res = yielder.yield element
result << res if res
end
result
end
end
end
end
end