[Haskell-cafe] Converting EpochTime to Integer

[David Kraeutmann]

EpochTime is an instance of Integral. You can just use toInteger ::
Integral a => a -> Integer.
On 9/15/2015 6:42 PM, Bram Neijt 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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