From: sawadatsuyoshi@...
Date: 2015-12-13T08:09:34+00:00
Subject: [ruby-core:72093] [Ruby trunk - Feature #11813] [Open] Extend safe navigation operator for [] and []= with syntax sugar

Issue #11813 has been reported by Tsuyoshi Sawada.

----------------------------------------
Feature #11813: Extend safe navigation operator for [] and []= with syntax sugar
https://bugs.ruby-lang.org/issues/11813

* Author: Tsuyoshi Sawada
* Status: Open
* Priority: Normal
* Assignee: 
----------------------------------------
Now we have the safe navigation operator `&.`. But this cannot be used with syntax sugar form of the methods `[]` and `[]=`, which are more frequent than their ordinary forms of method call. For example, when `a` can be either an array or `nil`, we can do:

    a &.[](3)
    a &.[]= 2, :foo

but we cannot do:

    a &.[3]
    a &.[2] = :foo

It would be nice if we can extend the use of `&.` to cover syntactic sugar as above.



-- 
https://bugs.ruby-lang.org/