[Haskell-cafe] Applicative but not Monad

Martijn van Steenbergen martijn at van.steenbergen.nl
Fri Oct 30 16:35:27 EDT 2009

Yusaku Hashimoto wrote:
> Hello cafe,
> Do you know any data-type which is Applicative but not Monad?

The Except datatype defined in the Applicative paper.

Some parsers are not monads, allowing for optimizations.


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