[ruby-core:69078] [Ruby trunk - Feature #11105] ES6-like hash literals

Issue #11105 has been updated by Rodrigo Rosenfeld Rosas.


Yukihiro Matsumoto wrote:
> Question:
> 
> What if we have variables with same name and different prefixes? e.g.
> 
> a = 1
> @a = 2
> $a = 3

CoffeeScript would compile to this:

~~~
@a=1; a=2; {@a, a} => {a: this.a, a: a}
~~~

If the same happens in Ruby, this is what I get in IRB:

~~~
> {a: 1, a: 2}
(irb):2: warning: duplicated key at line 2 ignored: :a
=> {:a=>2}
~~~

Sounds good to me.

----------------------------------------
Feature #11105: ES6-like hash literals
https://bugs.ruby-lang.org/issues/11105#change-52325

* Author: Shugo Maeda
* Status: Open
* Priority: Normal
* Assignee: 
----------------------------------------
Why not support ECMAScript6-like hash literals?

For example,

    {x, y}

is equivalent to:

    {x: x, y: y}

For convenience, the prefix of global, instance, and class variables should be removed from the key name as follows:

    a = 1
    B = 2
    $c = 3
    @d = 4
    @@e = 5
    p({a, B, $c, @d, @@e, f: 6})
    #=> {:a=>1, :B=>2, :c=>3, :d=>4, :e=>5, :f=>6}


---Files--------------------------------
0001-support-ES6-like-hash-literals.patch (3.88 KB)


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