can-i-haz
contravariant
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can-i-haz | contravariant | |
---|---|---|
- | 1 | |
14 | 72 | |
- | - | |
0.0 | 0.0 | |
almost 1 year ago | almost 2 years ago | |
Haskell | Haskell | |
BSD 3-clause "New" or "Revised" License | BSD 3-clause "New" or "Revised" License |
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can-i-haz
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Tracking mentions began in Dec 2020.
contravariant
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Co-Applicative programming style
The operator also pops up in George Wilson's 2018 talk, Contravariant Functors: the Other Side of the Coin, along with (>*) and (*<) operators to help things along. Shortly after its publication, Issue #57 for contravariant was raised, suggesting not only (>*<) but the other operators from George's talk.
What are some alternatives?
transient - A full stack, reactive architecture for general purpose programming. Algebraic and monadically composable primitives for concurrency, parallelism, event handling, transactions, multithreading, Web, and distributed computing with complete de-inversion of control (No callbacks, no blocking, pure state)
control-monad-free - Free monads and monad transformers
these - An either-or-both data type, with corresponding hybrid error/writer monad transformer.
hdph - Haskell distributed parallel Haskell
freer-effects - An implementation of "Freer Monads, More Extensible Effects".
effect-monad - Provides 'graded monads' and 'parameterised monads' to Haskell, enabling fine-grained reasoning about effects.
retry - Retry combinators for monadic actions that may fail
recursion-schemes - Generalized bananas, lenses and barbed wire
hask - Category theory for Haskell with a lens flavor (you need GHC 7.8.3, not 7.8.2 to build this!)
managed - A monad for managed values
monad-control - Lift control operations, like exception catching, through monad transformers
streamproc - Haskell library providing a continuation-based stream processor arrow