grab
contravariant
| grab | contravariant | |
|---|---|---|
| - | 1 | |
| 3 | 72 | |
| - | - | |
| 2.3 | 0.0 | |
| 11 months ago | about 2 years ago | |
| Haskell | Haskell | |
| MIT License | BSD 3-clause "New" or "Revised" License |
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grab
We haven't tracked posts mentioning grab yet.
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?
hask - Category theory for Haskell with a lens flavor (you need GHC 7.8.3, not 7.8.2 to build this!)
control-monad-free - Free monads and monad transformers
objective - Purely functional objects
hdph - Haskell distributed parallel Haskell
capability - Extensional capabilities and deriving combinators
effect-monad - Provides 'graded monads' and 'parameterised monads' to Haskell, enabling fine-grained reasoning about effects.
monad-control - Lift control operations, like exception catching, through monad transformers
streamproc - Haskell library providing a continuation-based stream processor arrow
distributed-closure - Serializable closures for distributed programming.
recursion-schemes - Generalized bananas, lenses and barbed wire
motor - Type-safe effectful state machines in Haskell
managed - A monad for managed values