From: sawadatsuyoshi@gmail.com
To: ruby-core@ruby-lang.org
Subject: [ruby-core:99384] [Ruby master Feature#6596] New method `Array#indexes`
Date: Wed, 29 Jul 2020 01:41:47 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-86791.20200729014145.5439@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-6596.20120615180505.5439@ruby-lang.org
Issue #6596 has been updated by sawa (Tsuyoshi Sawada).
TylerRick (Tyler Rick) wrote in #note-23:
> What can I do to help move this proposal forward?
Provide a use case.
----------------------------------------
Feature #6596: New method `Array#indexes`
https://bugs.ruby-lang.org/issues/6596#change-86791
* Author: robin850 (Robin Dupret)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
----------------------------------------
I submitted a pull request on Github that provides a new method `Array#indexes`. It departs from `Array#index` in such a way that it returns an array of indexes and not the single first occurrence that is relevant.
The reason I want this method is that I don't understand why `Array#index` returns a single index if the parameter is in the array several times.
Examples
```ruby
a = [1, 2, 3, 1]
a.indexes(1) #=> [0, 3]
a.index(1) # => 0
```
In my opinion, it's not logical to return only a single index since `1` is in the array twice.
--
https://bugs.ruby-lang.org/
prev parent reply other threads:[~2020-07-29 1:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <redmine.issue-6596.20120615180505.5439@ruby-lang.org>
2020-07-28 21:20 ` [ruby-core:99374] [Ruby master Feature#6596] New method for Arrays : Array#indexes tyler
2020-07-28 23:03 ` [ruby-core:99377] " tyler
2020-07-29 1:41 ` sawadatsuyoshi [this message]
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