[ruby-core:115316] [Ruby master Feature#14548] Allow some_array&.[1] to be a valid syntax

Issue #14548 has been updated by knu (Akinori MUSHA).

Status changed from Rejected to Open
Assignee set to matz (Yukihiro Matsumoto)

Can we reconsider this?  JavaScript already introduced this syntax a while ago and we are already getting pretty much used to it.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Optional_chaining#syntax
```javascript
obj.val?.prop
obj.val?.[expr]
obj.func?.(args)
```

I know `ary&.[]` is ambiguous, but it's extremely rare to call `[]` with no arguments, so let's just keep the compatibility and allow it to swallow the following arguments if any.

----------------------------------------
Feature #14548: Allow some_array&.[1] to be a valid syntax
https://bugs.ruby-lang.org/issues/14548#change-105233

* Author: rosenfeld (Rodrigo Rosenfeld Rosas)
* Status: Open
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
----------------------------------------
Currently, Ruby allows accessing an array's index while testing whether the array is not nil with this syntax: `my_array&.[](1)`. I've always found this awkward but didn't mind about suggesting anything to improve this.

I was just reading about how JavaScript is probably going to support myArray?.[1] and found that it read good enough for me.

So I'd like to propose about the same syntax, replacing ?. with the Ruby equivalent &. instead. How does that look like to you?



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