[Haskell-cafe] Implementing `MonadBaseControl IO` for application type

Jack Kelly jack at jackkelly.name
Sat Feb 2 23:03:33 UTC 2019

Magnus Therning <magnus at therning.org> writes:

> Li-yao Xia <lysxia at gmail.com> writes:
> Adding `UndecidableInstances` is something I'm not quite comfortable
> with,
> since I don't understand what it means.

UndecideableInstances is not too bad, because the default heuristic in
Haskell2010 is very conservative.


-- Jack

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