From: grzegorz.jakubiak@... Date: 2019-04-30T21:35:59+00:00 Subject: [ruby-core:92505] [Ruby trunk Feature#15323] [PATCH] Proposal: Add Enumerable#filter_map Issue #15323 has been updated by greggzst (Grzegorz Jakubiak). alfonsojimenez (Alfonso Jim�nez) wrote: > I've updated the patch file increasing the ruby version in *spec/ruby/core/enumerable/filter_map_spec.rb* > > `Enumerable#filter_map` was already accepted in the last developers meeting: https://docs.google.com/document/u/2/d/e/2PACX-1vTUCmj7aUdnMAdunG0AZo0AdWK-9jvfXcB7DWYmzGtmPc0IuIPGn7eLARoR5tBd6XUUB08W-hH74k-T/pub Does the syntax allow for this kind of code? ~~~ruby (1..10).filter_map(&:even?) { |i| i * 2 } ~~~ ---------------------------------------- Feature #15323: [PATCH] Proposal: Add Enumerable#filter_map https://bugs.ruby-lang.org/issues/15323#change-77866 * Author: alfonsojimenez (Alfonso Jim�nez) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- This is a proposal for a combined `filter` + `map` method (https://bugs.ruby-lang.org/issues/5663). This method both filters and maps the elements of an enumerable in just one iteration: ~~~ ruby (1..10).filter_map { |i| i * 2 if i.even? } #=> [4, 8, 12, 16, 20] ~~~ GitHub PR: https://github.com/ruby/ruby/pull/2017 ---Files-------------------------------- 0001-Adding-Enumerable-filter_map.patch (4.61 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: