From: "zverok (Victor Shepelev)" <noreply@...>
Date: 2021-09-15T10:00:20+00:00
Subject: [ruby-core:105265] [Ruby master Feature#14579] Hash value omission

Issue #14579 has been updated by zverok (Victor Shepelev).


@duerst

> I don't think using `if` as the name of a local variable is a good idea,

It is good (and widely used, BTW) name for a method parameter, in contexts like
```ruby
validate :foo, if: :something?
```
I don't see how it is bad idea, while producing the clearest method call convention for "conditional" DSLs.

----------------------------------------
Feature #14579: Hash value omission
https://bugs.ruby-lang.org/issues/14579#change-93675

* 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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