Feature #12352: New hash syntax broken for numeric keys

• Status: Rejected
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[adrianomitre (Adriano Mitre)]

[Matz himself showed in RubyConf 2015 the following example]:

h = { 1: 2, 2: 4, 3: 6 }

Which gives

SyntaxError: unexpected ':', expecting =>
h = { 1: 2, 2: 4, 3: 6 }
        ^

but which should give identical results to

>> h = { 1 => 2, 2 => 4, 3 => 6 }
=> {1=>2, 2=>4, 3=>6}

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Assigned
• Assignee set to matz (Yukihiro Matsumoto)
• Tracker changed from Bug to Feature
• Project changed from Ruby master to 14

Matz, do you want numeric keys for new hash syntax?

[matz (Yukihiro Matsumoto)]

Although I admit my mistake, I reject this for consistency.
If I allow this syntax, it had to generate

h = {1: 2}
p h # => {:"1", 2}

and no one want this.

Matz.

[matz (Yukihiro Matsumoto)]

• Status changed from Assigned to Rejected

[hsbt (Hiroshi SHIBATA)]

• Project changed from 14 to Ruby master