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

Ada language, parser in the package GNATCOLL.JSON (used, I think, also
by the Ada Web Server)


-------- Source code -------
with GNATCOLL.JSON;
use GNATCOLL.JSON;
with Ada.Text_IO; use Ada.Text_IO;

procedure my_test is
   Parsed : constant JSON_Value := Read ("{""a"":1,""a"":2}", "");
   Val : Integer;
begin
   Val := Get (Parsed, "a");
   Put_Line ("A=" & Integer'Image (Val));
end my_test;

----  Output ----

$ ./my_test
A= 2


On Thu, Jun 6, 2013 at 7:49 PM, Stefan Drees <stefan@drees.name> wrote:
> On 06.06.13 19:41, Paul Hoffman 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}
>
>
> don't tell anyone, but I'll continue with php (5.3.25):
> $> cat test_json.php
> <?php
> $d = json_decode('{"a":1,"a":2}');
> print_r($d);
> """
>
> $> php test_json.php
> stdClass Object
> (
>     [a] => 2
> )
>
> All the best,
> Stefan.
>
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