From: "mame (Yusuke Endoh)" <mame@tsg.ne.jp>
To: ruby-core@ruby-lang.org
Subject: [ruby-core:44069] [ruby-trunk - Feature #6240][Assigned] Enumerable#drop with negative argument
Date: Mon, 2 Apr 2012 22:59:46 +0900 [thread overview]
Message-ID: <redmine.journal-25602.20120402225945@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-6240.20120401055741@ruby-lang.org
Issue #6240 has been updated by mame (Yusuke Endoh).
Status changed from Open to Assigned
Assignee set to matz (Yukihiro Matsumoto)
----------------------------------------
Feature #6240: Enumerable#drop with negative argument
https://bugs.ruby-lang.org/issues/6240#change-25602
Author: marcandre (Marc-Andre Lafortune)
Status: Assigned
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: 2.0.0
Currently, Enumerable#drop works only for non-negative arguments.
It could be extended so that negative arguments means dropping from the end:
[:hello, :world].drop(-1) # => [:hello]
This could especially be interesting for `Lazy#drop`, which would keep a circular buffer of elements before yielding them.
(1..6).lazy.drop(-3).each{|x| puts x} # -> prints 1, 2 and 3
Thoughts?
--
http://bugs.ruby-lang.org/
next prev parent reply other threads:[~2012-04-02 14:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-31 20:57 [ruby-core:44028] [ruby-trunk - Feature #6240][Open] Enumerable#drop with negative argument marcandre (Marc-Andre Lafortune)
2012-04-01 0:05 ` [ruby-core:44030] [ruby-trunk - Feature #6240] " shugo (Shugo Maeda)
2012-04-01 23:38 ` [ruby-core:44047] " marcandre (Marc-Andre Lafortune)
2012-04-02 1:41 ` [ruby-core:44051] " shugo (Shugo Maeda)
2012-04-02 13:59 ` mame (Yusuke Endoh) [this message]
2012-10-25 8:48 ` [ruby-core:48242] " yhara (Yutaka HARA)
2019-01-10 8:30 ` [ruby-core:90982] [Ruby trunk Feature#6240] " knu
2019-01-10 23:07 ` [ruby-core:91006] [Ruby trunk Feature#6240][Closed] " ruby-core
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