From: "slayer (Vlad Moskovets)" <devvlad@...>
Date: 2012-06-09T04:32:05+09:00
Subject: [ruby-core:45518] [ruby-trunk - Feature #6561][Open] ?= operator


Issue #6561 has been reported by slayer (Vlad Moskovets).

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Feature #6561: ?= operator
https://bugs.ruby-lang.org/issues/6561

Author: slayer (Vlad Moskovets)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 2.0.0


I have feature proposition to add new opearator ?= its like ||= but assigns only when variable is not defined
So it should be shortcut for

    @var ?= 1

eq

    defined?(@var) ? @var : @var = 1

It should useful for caching nil'able or false'able items



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