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Bug #4559

closed

Proc#== does not match the documented behaviour

Added by aprescott (Adam Prescott) almost 13 years ago. Updated over 11 years ago.

Status:
Closed
Target version:
ruby -v:
ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]
Backport:
[ruby-core:35632]

Description

=begin
To see a paste concisely showing the problem, see https://gist.github.com/899026/ba84d66b02727675320dc4f031637d753a41c209

Code is shown below for 1.9.2p180.

The documented behaviour (and my own expectation for (({#==}))) is: "Return true if prc is the same object as other_proc, or if they are both procs with the same body."

RUBY_DESCRIPTION #=> ruby 1.9.2p180 (2011-02-18 revision 30909) [i686-linux]

proc { 1 } == proc { 1 } # => true
proc { 1 + 1 } == proc { 1 + 1 } # => false

proc { |x| x } == proc { |x| x } # => true
proc { |x| x.foo } == proc { |x| x.foo } # => false

lambda { 1 } == lambda { 1 } # => true
lambda { 1 + 1 } == lambda { 1 + 1 } # => false

lambda { |x| x } == lambda { |x| x } # => true
lambda { |x| x.foo } == lambda { |x| x.foo } # => false

Proc.new { 1 } == Proc.new { 1 } # => true
Proc.new { 1 + 1 } == Proc.new { 1 + 1 } # => false

Proc.new { |x| x } == Proc.new { |x| x } # => true
Proc.new { |x| x.foo } == Proc.new { |x| x.foo } # => false

Similar also occurs on 1.8.7; on version 1.8.7 (2011-02-18 patchlevel 334), all returned values are (({false})). I also reproduced this behaviour on 1.9.2p136 (2010-12-25 revision 30365) [i686-linux].

Attached is a file which will (({puts})) the values.
=end


Files

proc-equality.rb (550 Bytes) proc-equality.rb aprescott (Adam Prescott), 04/07/2011 05:07 AM

Related issues 1 (0 open1 closed)

Related to Ruby master - Bug #4323: Proc#hash is Ill-BehavedClosedmatz (Yukihiro Matsumoto)01/26/2011Actions
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