Safe Haskell | None |
---|---|

Language | Haskell2010 |

## Synopsis

- memo :: MonadState s m => Lens' (Maybe a) s -> m a -> m a
- memoRec :: MonadState s m => Lens' (Maybe a) s -> a -> m a -> m a
- memoUnsafe :: Ord a => (a -> b) -> a -> b
- memoUnsafeH :: (Eq a, Hashable a) => (a -> b) -> a -> b

# Documentation

memo :: MonadState s m => Lens' (Maybe a) s -> m a -> m a Source #

Simple, non-reentrant memoisation.

memoRec :: MonadState s m => Lens' (Maybe a) s -> a -> m a -> m a Source #

Recursive memoisation, second argument is the value you get on recursive calls.

memoUnsafe :: Ord a => (a -> b) -> a -> b Source #

memoUnsafeH :: (Eq a, Hashable a) => (a -> b) -> a -> b Source #