[ruby-core:93739] [Ruby master Feature#5781] Query attributes (attribute methods ending in `?` mark)
From:
eregontp@...
Date:
2019-07-13 10:31:00 UTC
List:
ruby-core #93739
Issue #5781 has been updated by Eregon (Benoit Daloze).
FWIW, a long time ago I tried to implement https://bugs.ruby-lang.org/issues/5781#note-7 in MRI but it turned out to be not so easy and I gave up.
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Feature #5781: Query attributes (attribute methods ending in `?` mark)
https://bugs.ruby-lang.org/issues/5781#change-79376
* Author: trans (Thomas Sawyer)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version:
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Pretty sure this has come up before, but I'd like to revisit b/c I don't understand why it isn't allowed.
Sometimes I define "query" attributes, and in those cases I'd like the reader method to end in a `?` mark. Currently I have to do:
# @attribute
def foo?
@foo
end
or, if I don't mind a shadowing bare method,
attr :foo
alias_method :foo?, :foo
So why not just allow:
attr :foo?
Currently this causes an error. But why? It just seems like a waste of potentially cleaner code.
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