[Haskell-cafe] Attempt to emulate subclasses in Haskell, am I reinventing the wheel?

[David Feuer]

On Apr 20, 2015 2:26 PM, "Bardur Arantsson" <spam at scientician.net> wrote:
> Well, I would generally advise against trying to emulate a flawed
> concept in the first place. "OverlappingInstances" and
> "UndecidableInstances" are a red flag unless you know *exactly* what you
> are doing.

While I completely agree about OverlappingInstances, I completely disagree
about UndecidableInstances. Most of the time, that's only needed because
the termination check for FlexibleInstances and FlexibleContexts is too
primitive.
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