From: duerst@it.aoyama.ac.jp
To: ruby-core@ruby-lang.org
Subject: [ruby-core:71329] [Ruby trunk - Feature #11653] Add to_proc on Hash
Date: Wed, 04 Nov 2015 05:24:44 +0000 [thread overview]
Message-ID: <redmine.journal-54703.20151104052444.0e77227b8f9fb5ea@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-11653.20151104025915@ruby-lang.org
Issue #11653 has been updated by Martin Dürst.
Assignee set to Yukihiro Matsumoto
I think this is an excellent idea. I hope this can make it into Ruby 2.3.
----------------------------------------
Feature #11653: Add to_proc on Hash
https://bugs.ruby-lang.org/issues/11653#change-54703
* Author: Daniel P. Clark
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
----------------------------------------
Procs can be called the same way a hash is with `[]`. But a Hash is not mappable as a Proc.
my_hash = ->key{{
a: 1, b: 2, c: 3, d: 4, e: 5, f: 6
}[key]}
my_hash[:a]
# => 1
[:e, :a, :b, :f, :c, :d].map(&my_hash) # hash is now mappable
# => [5, 1, 2, 6, 3, 4]
This seems so straight forward I believe it should be part of the language itself with the .to_proc method call.
--
https://bugs.ruby-lang.org/
next prev parent reply other threads:[~2015-11-04 4:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <redmine.issue-11653.20151104025915@ruby-lang.org>
2015-11-04 2:59 ` [ruby-core:71327] [Ruby trunk - Feature #11653] [Open] Add to_proc on Hash 6ftdan
2015-11-04 5:24 ` duerst [this message]
2015-11-04 6:01 ` [ruby-core:71330] [Ruby trunk - Feature #11653] " nobu
2015-11-09 8:03 ` [ruby-core:71404] " matz
2015-11-09 14:32 ` [ruby-core:71416] Unsubscribe Dan Whiteside
2015-11-09 8:08 ` [ruby-core:71405] [Ruby trunk - Feature #11653] Add to_proc on Hash ko1
2016-06-24 8:34 ` [ruby-core:76135] [Ruby trunk Feature#11653] " Ruby-Lang
2016-06-25 5:01 ` [ruby-core:76140] " duerst
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