Re: [Json] Call for real-world examples of how parsers deal with duplicate keys

["Matt Miller (mamille2)" <[e-mail]>]

On Jun 6, 2013, at 11:41 AM, Paul Hoffman <[e-mail]>
 wrote:

> Greetings again. Knowing what current parsers do with duplicate keys might be useful to this discussion. Of course, some people will exclaim "but that's wrong!" to some of what we see, but seeing it may be useful nonetheless.
> 
> I propose the following JSON text for the tests:
> 
> {"a":1,"a":2}
> 
> --Paul Hoffman
> 
> ==============================
> 
> And I'll start with Python.
> 
> from __future__ import print_function
> import json
> a = '{"a":1,"a":2}'
> print(json.loads(a))
> 
> # python2.6 keytest.py
> {u'a': 2}
> # python2.7 keytest.py
> {u'a': 2}
> # python3.2 keytest.py
> {'a': 2}



Experiments should always have a control!  I think we can consider this the control:

-----BEGIN JAVASCRIPT-----
var input = '{"a":1,"a":2}';

var output;
output = JSON.parse(input);
output = JSON.stringify(output);

console.log(output);
-----END JAVASCRIPT-----

# node.js 0.10.8
{"a":2}

# Firefox 22
{"a":2}

# Safari 6.5
{"a":2}

# Chrome 27
{"a":2}


- m&m

Matt Miller < [e-mail] >
Cisco Systems, Inc.