Bug #3769: Removing Predefined Constants

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 1.9.3dev (2010-08-30 trunk 29147) [i686-linux]

[runpaint (Run Paint Run Run)]

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The documentation for Module#remove_const states "Predefined classes and singleton objects (such as true) cannot be removed", but I believe the example below illustrates that they can. Is this a documentation or implementation bug?

run@paint:~ → cat /tmp/remove_const.rb
Module.constants.grep(/(?<!Object)$/).tap do |c|
c.each {|_| Object.class_eval{ remove_const } }
p c.select{|| Object.const_defined? _}
end
run@paint:~ → ruby -vw /tmp/remove_const.rb
ruby 1.9.3dev (2010-08-30 trunk 29147) [i686-linux]
[]
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[nobu (Nobuyoshi Nakada)]

• Category changed from core to doc

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[runpaint (Run Paint Run Run)]

• File mod-remove-const.patch mod-remove-const.patch added

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Category changed from core to DOC

Assuming this means the docs are at fault, the attached removes the last sentence "Predefined classes and singleton objects (such as true) cannot be removed." on the basis that my above description proves the first clause wrong, and the latter is implied by the fact that methods such as #constants don't regard true as a constant, either.
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[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

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This issue was solved with changeset r29519.
Run Paint, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

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