[#24648] [Bug #1852] Enumerable's #hash Raises ArgumentError When Recursive Values are Present — Run Paint Run Run <redmine@...>

Bug #1852: Enumerable's #hash Raises ArgumentError When Recursive Values are Present

20 messages 2009/08/01
[#24649] Re: [Bug #1852] Enumerable's #hash Raises ArgumentError When Recursive Values are Present — Tanaka Akira <akr@...> 2009/08/01

In article <4a73e51b5a4f9_138119f2a982704e@redmine.ruby-lang.org>,

[#24652] Re: [Bug #1852] Enumerable's #hash Raises ArgumentError When Recursive Values are Present — Run Paint Run Run <runrun@...> 2009/08/01

> Is it valuable to implement such function?

[#24682] Re: [Bug #1852] Enumerable's #hash Raises ArgumentError When Recursive Values are Present — Tanaka Akira <akr@...> 2009/08/02

In article <67e307490908010125r6fa76654pa8e2224f714588fc@mail.gmail.com>,

[#24673] [Feature #1857] install *.h and *.inc — Roger Pack <redmine@...>

Feature #1857: install *.h and *.inc

21 messages 2009/08/01

[#24732] [Bug #1873] MatchData#[]: Omits All But Last Captures Corresponding to the Same Named Group — Run Paint Run Run <redmine@...>

Bug #1873: MatchData#[]: Omits All But Last Captures Corresponding to the Same Named Group

12 messages 2009/08/03

[#24775] [Feature #1889] Teach Onigurma Unicode 5.0 Character Properties — Run Paint Run Run <redmine@...>

Feature #1889: Teach Onigurma Unicode 5.0 Character Properties

30 messages 2009/08/05

[#24786] [Bug #1893] Recursive Enumerable#join is surprising — Jeremy Kemper <redmine@...>

Bug #1893: Recursive Enumerable#join is surprising

24 messages 2009/08/06
[#28422] [Bug #1893] Recursive Enumerable#join is surprising — Yusuke Endoh <redmine@...> 2010/03/02

Issue #1893 has been updated by Yusuke Endoh.

[#28438] Re: [Bug #1893] Recursive Enumerable#join is surprising — Yukihiro Matsumoto <matz@...> 2010/03/03

Hi,

[#24854] embedding ruby 1.9 frustration — Rolando Abarca <funkaster@...>

Hello,

12 messages 2009/08/10

[#24982] [Feature #1961] Kernel#__dir__ — Yutaka HARA <redmine@...>

Feature #1961: Kernel#__dir__

26 messages 2009/08/19
[#28898] [Feature #1961] Kernel#__dir__ — Roger Pack <redmine@...> 2010/03/23

Issue #1961 has been updated by Roger Pack.

[#28900] Re: [Feature #1961] Kernel#__dir__ — Kornelius Kalnbach <murphy@...> 2010/03/23

On 23.03.10 19:10, Roger Pack wrote:

[#25025] [Backport #1975] Backport Dir.mktmpdir — Kirk Haines <redmine@...>

Backport #1975: Backport Dir.mktmpdir

12 messages 2009/08/21

[#25041] Proposal: Simpler block format — Yehuda Katz <wycats@...>

I'd like to propose that we add the following syntax for procs in Ruby:

45 messages 2009/08/23
[#25046] Re: Proposal: Simpler block format — Caleb Clausen <caleb@...> 2009/08/23

Yehuda Katz wrote:

[#25049] Re: Proposal: Simpler block format — Yehuda Katz <wycats@...> 2009/08/23

On Sat, Aug 22, 2009 at 7:38 PM, Caleb Clausen <caleb@inforadical.net>wrote:

[#25058] Re: Proposal: Simpler block format — Yukihiro Matsumoto <matz@...> 2009/08/23

Hi,

[#25059] Re: Proposal: Simpler block format — Yehuda Katz <wycats@...> 2009/08/23

On Sun, Aug 23, 2009 at 3:33 PM, Yukihiro Matsumoto <matz@ruby-lang.org>wrote:

[#25063] Re: Proposal: Simpler block format — "David A. Black" <dblack@...> 2009/08/23

Hi --

[#25068] Re: Proposal: Simpler block format — brian ford <brixen@...> 2009/08/24

Hi,

[#25086] [Bug #1991] ruby should use twolevel namespace on OS X — Michal Suchanek <redmine@...>

Bug #1991: ruby should use twolevel namespace on OS X

12 messages 2009/08/24

[#25208] Module#prepend and Array#prepend — Yehuda Katz <wycats@...>

Matz,

23 messages 2009/08/30

[#25210] [Feature #2022] Patch for ruby-1.8.6 and openssl-1.0 — Jeroen van Meeuwen <redmine@...>

Feature #2022: Patch for ruby-1.8.6 and openssl-1.0

15 messages 2009/08/30

[#25220] [Bug #2026] String encodings are not supported by most of IO on Linux — Vit Ondruch <redmine@...>

Bug #2026: String encodings are not supported by most of IO on Linux

18 messages 2009/08/31

[ruby-core:24786] [Bug #1893] Recursive Enumerable#join is surprising

From: Jeremy Kemper <redmine@...>
Date: 2009-08-06 04:01:47 UTC
List: ruby-core #24786
Bug #1893: Recursive Enumerable#join is surprising
http://redmine.ruby-lang.org/issues/show/1893

Author: Jeremy Kemper
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.2dev (2009-08-06) [i386-darwin9.7.0]

>> Bar = Struct.new(:a, :b)
=> Bar
>> bars = [Bar.new('1', '2'), Bar.new('3', '4')]
=> [#<struct Bar a="1", b="2">, #<struct Bar a="3", b="4">]
>> bars * '--'
=> "1--2--3--4"

Surprising? It looks like joining Arrays not Structs. Let's define to_s:

>> class Bar; def to_s; 'foo' end end
=> nil
>> bars * '--'
=> "1--2--3--4"

Doesn't work! Strange. But remove to_a and it works!

>> class Bar; undef_method :to_a end
=> Bar
>> bars * '--'
=> "foo--foo"

Also note that defining to_str works because ary_join_1 checks rb_check_string_type first, then rb_check_convert_type:

>> class Bar; def to_str; 'baz' end end
=> nil
>> bars * '--'
=> "baz--baz"

See r23951 for the change:
* array.c (ary_join_1): recursive join for Enumerators (and objects with #to_a).

There are two solutions:
* remove Struct#to_a, or
* tighten the recursive join check for arrays

I think we need a to_ary (like to_str) for the recursive array case instead of using to_a.


----------------------------------------
http://redmine.ruby-lang.org

In This Thread

Prev Next