From: "shugo (Shugo Maeda)" <noreply@...>
Date: 2021-09-15T06:40:36+00:00
Subject: [ruby-core:105260] [Ruby master Feature#14579] Hash value omission

Issue #14579 has been updated by shugo (Shugo Maeda).


shugo (Shugo Maeda) wrote in #note-22:
> except that keywords are allowed.

I meant that keywords are allowed as local variable or method names.
For example, `{if:}` is not a syntax error and `{self:}` doesn't access the receiver but a local variable or method `self`.



----------------------------------------
Feature #14579: Hash value omission
https://bugs.ruby-lang.org/issues/14579#change-93670

* Author: shugo (Shugo Maeda)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
----------------------------------------
How about to allow value omission in Hash literals:

```ruby
x = 1
y = 2
h = {x:, y:}
p h #=> {:x=>1, :y=>2}
```

And in keyword arguments:

```ruby
def login(username: ENV["USER"], password:)
  p(username:, password:)
end

login(password: "xxx") #=> {:username=>"shugo", :password=>"xxx"}
```


---Files--------------------------------
hash_value_omission.diff (619 Bytes)


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

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>