[ruby-core:96005] [Ruby master Feature#15323] [PATCH] Proposal: Add Enumerable#filter_map
| Newsgroups | gmane.comp.lang.ruby.core |
|---|---|
| Message-ID | <redmine.journal-82841.20191128041950.4a1c14f5e038e23d@ruby-lang.org> |
Issue #15323 has been updated by nobu (Nobuyoshi Nakada).
It seems OK as the original proposal is same as the current behavior.
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Feature #15323: [PATCH] Proposal: Add Enumerable#filter_map
https://bugs.ruby-lang.org/issues/15323#change-82841
* Author: alfonsojimenez (Alfonso Jiménez)
* Status: Closed
* Priority: Normal
* Assignee:
* Target version:
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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)
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