From: xkernigh@...
Date: 2017-08-24T22:26:25+00:00
Subject: [ruby-core:82460] [Ruby trunk Feature#11105] ES6-like hash literals

Issue #11105 has been updated by kernigh (George Koehler).


This ES6 syntax for hash literals looks strange to me. I have never seen it before today, but I have not written JavaScript for a few years, and I am not using Ruby for web development.

Two things puzzle me:

1. What is the key in `{@a}`? I want `:@a` as the key, others want `:a`. I don't expect Ruby to change `a` into `@a`. For example, `object.instance_variable_get :a` raises NameError, but `object.instance_variable_get :@a` works.
2. Should `{print}` call the method `print` if there's no local variable? That's what `{print: print}` would do.

----------------------------------------
Feature #11105: ES6-like hash literals
https://bugs.ruby-lang.org/issues/11105#change-66270

* Author: shugo (Shugo Maeda)
* Status: Rejected
* Priority: Normal
* Assignee: 
* Target version: 
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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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