From: "jacksonwillis (Jackson Willis)" <redmine@...>
Date: 2012-04-08T18:45:35+09:00
Subject: [ruby-core:44187] [ruby-trunk - Feature #6270] add "??a" support for "not defined?(a) or a.nil?"


Issue #6270 has been updated by jacksonwillis (Jackson Willis).


So `??foo' is basically a macro for `not defined?(foo) or foo.nil?'.
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Feature #6270: add "??a" support for "not defined?(a) or a.nil?"
https://bugs.ruby-lang.org/issues/6270#change-25715

Author: jacksonwillis (Jackson Willis)
Status: Open
Priority: Low
Assignee: 
Category: 
Target version: 3.0


It would work like this:

    ??foo #=> nil

    foo = nil

    ??foo #=> nil

    foo = 3

    ??foo #=> true

Not sure if this would be useful, just a suggestion.


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