[#67346] Future of test suites for Ruby — Charles Oliver Nutter <headius@...>
I'll try to be brief so we can discuss all this. tl;dr: RubySpec is
19 messages
2015/01/05
[#67353] Re: Future of test suites for Ruby
— Tanaka Akira <akr@...>
2015/01/05
2015-01-06 7:18 GMT+09:00 Charles Oliver Nutter <[email protected]>:
[#67444] [ruby-trunk - Feature #10718] [Open] IO#close should not raise IOError on closed IO objects. — akr@...
Issue #10718 has been reported by Akira Tanaka.
3 messages
2015/01/09
[#67689] Keyword Arguments — Anthony Crumley <anthony.crumley@...>
Please forgive my ignorance as I am new to MRI development and am still
5 messages
2015/01/20
[#67733] [ruby-trunk - Bug #10761] Marshal.dump 100% slower in 2.2.0 vs 2.1.5 — normalperson@...
Issue #10761 has been updated by Eric Wong.
4 messages
2015/01/21
[#67736] Re: [ruby-trunk - Bug #10761] Marshal.dump 100% slower in 2.2.0 vs 2.1.5
— Eric Wong <normalperson@...>
2015/01/22
[email protected] wrote:
[#67772] Preventing Redundant Email Messages — Jeremy Evans <code@...>
For a long time, I've wondered why I sometimes receive redundant email
5 messages
2015/01/23
[ruby-core:67412] [ruby-trunk - Bug #10713] [Open] Assigning default value for a Hash as an empty Array creating unpredictable results
From:
punjcoder@...
Date:
2015-01-07 23:59:35 UTC
List:
ruby-core #67412
Issue #10713 has been reported by Arvinder Singh.
----------------------------------------
Bug #10713: Assigning default value for a Hash as an empty Array creating unpredictable results
https://bugs.ruby-lang.org/issues/10713
* Author: Arvinder Singh
* Status: Open
* Priority: Normal
* Assignee:
* Category: core
* Target version: current: 2.2.0
* ruby -v: ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin14]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
Creating a Hash with a default value works fine, unless the default value is an empty Array.
E.g. the following returns an empty Hash...
~~~
irb(main):001:0> letters = Hash.new([])
=> {}
irb(main):002:0> letters[:a] << 1
=> [1]
irb(main):003:0> letters[:a] << 2
=> [1, 2]
irb(main):004:0> letters[:a]
=> [1, 2]
irb(main):005:0> letters
=> {}
~~~
whereas the following code explicitly defining hash keys works.
~~~
irb(main):001:0> letters = {a: [], b: []}
=> {:a=>[], :b=>[]}
irb(main):002:0> letters[:a] << 1
=> [1]
irb(main):003:0> letters[:a] << 2
=> [1, 2]
irb(main):004:0> letters[:a]
=> [1, 2]
irb(main):005:0> letters
=> {:a=>[1, 2], :b=>[]}
~~~
Is this an unpredictable(bug) or an expected behavior(feature). I tend to lean towards the former, but I might be wrong.
--
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