[#51213] [ruby-trunk - Bug #7645][Open] BigDecimal#== slow when compared to true/false — "mathie (Graeme Mathieson)" <mathie@...>

11 messages 2013/01/01

[#51328] [ruby-trunk - Bug #7676][Open] Comparison of Float::NAN in array behaves unexpectedly — "simonrussell (Simon Russell)" <spam+ruby@...>

11 messages 2013/01/09

[#51347] [ruby-trunk - Bug #7679][Open] IRB history is broken — "zzak (Zachary Scott)" <zachary@...>

15 messages 2013/01/10

[#51389] [ruby-trunk - Bug #7688][Open] Error hiding with rb_rescue() on Comparable#==, #coerce and others — "Eregon (Benoit Daloze)" <redmine@...>

34 messages 2013/01/11

[#51430] [ruby-trunk - Bug #7696][Open] Lazy enumerators with state can't be rewound — "marcandre (Marc-Andre Lafortune)" <ruby-core@...>

15 messages 2013/01/14

[#51437] [ruby-trunk - Bug #7698][Open] RubyGems 2.0 has an incompatibility about installation of extension libraries — "mrkn (Kenta Murata)" <muraken@...>

21 messages 2013/01/15

[#51454] [CommonRuby - Feature #7701][Open] Non-optional (required) keyword args — "headius (Charles Nutter)" <headius@...>

31 messages 2013/01/15

[#51499] [ruby-trunk - Feature #7712][Open] Add .txt extensions to all plain-text documentation files for Windows users — "postmodern (Hal Brodigan)" <postmodern.mod3@...>

9 messages 2013/01/18

[#51619] [ruby-trunk - Feature #7738][Open] Deprecate Set#+ as an alias of Set#|, use it for symmetric difference. Introduce Hash#| for Hash#reverse_merge in Rails. — "alexeymuranov (Alexey Muranov)" <redmine@...>

11 messages 2013/01/24

[#51623] [ruby-trunk - Feature #7739][Open] Define Hash#| as Hash#reverse_merge in Rails — "alexeymuranov (Alexey Muranov)" <redmine@...>

24 messages 2013/01/24

[#51714] [CommonRuby - Feature #7747][Open] Expanded API for Binding semantics — "jballanc (Joshua Ballanco)" <jballanc@...>

19 messages 2013/01/27

[#51742] [ruby-trunk - Bug #7756][Open] clang 3.2 sees through UNINITIALIZED_VAR macro, gives warning — "drbrain (Eric Hodel)" <[email protected]>

10 messages 2013/01/29

[#51763] [ruby-trunk - Bug #7758][Open] Ruby on Windows crashes when active codepage is codepage 65001 and outputting unicode character — "joshc (Josh C)" <josh.nw@...>

16 messages 2013/01/30

[ruby-core:51668] [ruby-trunk - Feature #7580] Range translation

From: "charliesome (Charlie Somerville)" <charlie@...>
Date: 2013-01-25 14:15:29 UTC
List: ruby-core #51668
Issue #7580 has been updated by charliesome (Charlie Somerville).

Target version set to next minor


----------------------------------------
Feature #7580: Range translation
https://bugs.ruby-lang.org/issues/7580#change-35634

Author: charliesome (Charlie Somerville)
Status: Assigned
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: 
Target version: next minor


=begin
I would like to propose the (({#+})) and (({#-})) methods on (({Range})).

These would be useful for translating ranges - for example, given a range where the endpoints are 1-indexed, the range could be translated by 1 in the negative direction to use in (({Array#[]})).

Instead of doing a syntactically-bulky manual translation like so:

  ary[(range.begin - 1)..(range.end - 1)]

(({Range#-})) could be used instead:

  ary[range - 1]

The translation methods would not handle certain endpoint types specially, they would just pass the call on.

Here's an example implementation in Ruby:

  class Range
    def +(other)
      Range.new(self.begin + other, self.end + other, exclude_end?)
    end

    def -(other)
      Range.new(self.begin - other, self.end - other, exclude_end?)
    end
  end

=end


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