[Haskell-cafe] How to use http-enumerator with hoauth?

Jeremy Fitzhardinge jeremy at goop.org
Wed Feb 16 07:27:26 CET 2011

On 02/15/2011 05:49 PM, Diego Souza wrote:
> Hi,
> thanks for the feedbacks. They sound very reasonable.
> Going back in time, the first version was in fact a pure library.
> However, at some point I changed this as I thought it would make it
> easier to use, which might have been a mistake of mine.

Yes, I think its a good idea to keep things simple and pure to ease

> I'm just concerned about changing the interface once more, but it
> might be justified. Perhaps splitting it into the pure oauth functions
> as used to be in the beginning and another one that puts the http
> layer, in case one finds it convenient. That might mitigate this
> problem, and perhaps, avoid changing the interface.

Since there seem to be a number of existing users of your API, it would
be rude to break it on them.

You can implement a clearly defined two-layer API for the package: a
mostly pure layer which deals with the basics of settings up OAuth
requests and responses, and then the current API layered on top of it.

The main problem is dealing with all the different Request/Response
types.  But if you can narrow down the sets of operations you need for
each and define typeclasses with the appropriate functions, it should be
fairly to make the existing types instances of those classes (ie, akin
to HttpClient, but avoiding the IO where possible).


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