| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Haxl.Core.Memo
Description
Most users should import Haxl.Core instead of importing this module directly.
- memo :: (Typeable a, Typeable k, Hashable k, Eq k) => k -> GenHaxl u a -> GenHaxl u a
- memoFingerprint :: (Show a, Typeable a) => MemoFingerprintKey a -> GenHaxl u a -> GenHaxl u a
- data MemoFingerprintKey a where
- MemoFingerprintKey :: !Word64 -> !Word64 -> MemoFingerprintKey a
Documentation
memo :: (Typeable a, Typeable k, Hashable k, Eq k) => k -> GenHaxl u a -> GenHaxl u a Source
Memoize a computation using an arbitrary key. The result will be
calculated once; the second and subsequent time it will be returned
immediately. It is the caller's responsibility to ensure that for
every two calls memo key haxl, if they have the same key then
they compute the same result.
memoFingerprint :: (Show a, Typeable a) => MemoFingerprintKey a -> GenHaxl u a -> GenHaxl u a Source
data MemoFingerprintKey a where Source
A memo key derived from a 128-bit MD5 hash. Do not use this directly, it is for use by automatically-generated memoization.
Constructors
| MemoFingerprintKey :: !Word64 -> !Word64 -> MemoFingerprintKey a |
Instances