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Ticket #155 (closed enhancement: duplicate)

Opened 7 years ago

Last modified 7 years ago

New Functor => Applicative => Monad Hierarchy

Reported by: gidyn Owned by:
Priority: major Milestone:
Component: (none-specified) Keywords:


The standard class hierarchy is a consequence of Haskell's historical development, rather than logic. I would therefore like to propose a reform of the Functor, Applicative, and Monad type classes. The new hierarchy is logical, eliminates many duplicate names from the standard type class definitions, and removes the need for boilerplate Monad -> Applicative instance declarations.

The proposal is detailed in the wiki, along with an example of a legacy module to provide some backwards-compatibility.

Change History

Changed 7 years ago by gidyn

  • cc voldermort@… added

Changed 7 years ago by gidyn

  • cc voldermort@… removed
  • status changed from new to closed
  • resolution set to duplicate

Moved to GHC, as this is a change to base.

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