[Haskell-beginners] How do ambigious types compile with Aeson

[Sevcsik András]

That explains it, thank you!

On Sun, Sep 13, 2015, 03:20 Brandon Allbery <allbery.b at gmail.com> wrote:

> On Sat, Sep 12, 2015 at 9:15 PM, Sevcsik András <sevcsik at gmail.com> wrote:
>
>> How it's decided what type should Aeson try to decode to? What type is
>> that gives me Nothing on whatever JSON input I give?
>
>
> ghci has ExtendedDefaultRules enabled, which means that many things will
> infer a type of () if one cannot otherwise be determined. This is not
> something Aeson has control over.
> Try ":seti -XNoExtendedDefaultRules" and ask ghci again; it should produce
> an ambiguous type error.
>
> --
> brandon s allbery kf8nh                               sine nomine
> associates
> allbery.b at gmail.com
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-- 
Minden jót,
Sevcsik András
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