[Haskell-cafe] GHC extensions

Vanessa McHale vanessa.mchale at iohk.io
Fri Apr 5 16:06:43 UTC 2019

I would not expect type system extensions to have any effect on the
performance of generated code.

Vanessa McHale

On 4/5/19 10:19 AM, Michel Haber wrote:
> Hello Cafe,
> So I've been learning a bit about the GHC extensions from
> https://github.com/i-am-tom/haskell-exercises. But the lessons say
> nothing about how the extensions work behind the scenes.
> For example, I've assumed that RankNTypes would require something
> similar to dynamic dispatch in imperative languages in order to work.
> But this is just an assumption.
> So I was wondering where I can get a quick succinct read (or a summary
> at least) about how these extensions are implemented, as well as their
> performance cost (or gain!).
> Also if someone knows other tutorials and lessons for these, and other
> extensions, please feel free to share them :p
> Thank you,
> Michel :)
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