[ruby-core:105266] [Ruby master Feature#14579] Hash value omission

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


duerst (Martin Dst) wrote in #note-27:
> I don't think using `if` as the name of a local variable is a good idea, and I don't think the speed of bad ideas should concern us too much.

As zverok stated, a keyword such as `if` is used as a keyword argument (especially on Rails?).

----------------------------------------
Feature #14579: Hash value omission
https://bugs.ruby-lang.org/issues/14579#change-93676

* 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)


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