[Haskell-cafe] Converting EpochTime to Integer

[Patrick Chilton]

type EpochTime = CTime
newtype CTime = CTime Int64

You can just pattern match.

On Tue, Sep 15, 2015 at 5:42 PM, Bram Neijt <bneijt at gmail.com> wrote:

> Dear Haskell cafe,
>
> I want to convert form
>
> mtime :: System.Posix.Types.EpochTime
>
> to something aeson can eat without having to define an instance. I
> choose Integer.
>
> My current solution[1] is just using (read . show). I know, ugly, but
> the only thing I could get going.
>
> What is the proper way to convert System.Posix.Types.EpochTime to
> Integer or something else aeson will automatically convert without
> making a ToJSON instance?
>
> As a beginner I wonder: is there a general way to go about finding
> conversion paths between types?
>
>
> Greetings,
>
> Bram Neijt
>
> [1] https://github.com/bneijt/httpmtimeline/blob/master/src/Main.hs#L21
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