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From: Jabba Laci <jabba.laci@gmail.com>
Date: Wed, 29 May 2013 13:16:59 +0200
Subject: detect key conflict in a JSON file
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Xref: csiph.com comp.lang.python:46367

Hi,

How can you detect if a key is duplicated in a JSON file? Example:

{
    "something": [...],
    ...
    "something": [...]
}

I have a growing JSON file that I edit manually and it might happen
that I repeat a key. If this happens, I would like to get notified.
Currently the value of the second key silently overwrites the value of
the first.

Do you know about a command line JSON validator?

Thanks,

Laszlo