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fix: add a single element cache

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2023-12-21 14:10:46 +01:00
parent 3aa55c74d4
commit 5ac47440a1
5 changed files with 76 additions and 5 deletions
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11
function/cache.go
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@ -28,3 +28,14 @@ func Memoize[K comparable, T any](f func(K) T) func(K) T {
func ContramapMemoize[A any, K comparable, T any](kf func(A) K) func(func(A) T) func(A) T {
return G.ContramapMemoize[func(A) T](kf)
}
// CacheCallback converts a unary function into a unary function that caches the value depending on the parameter
func CacheCallback[
A any, K comparable, T any](kf func(A) K, getOrCreate func(K, func() func() T) func() T) func(func(A) T) func(A) T {
return G.CacheCallback[func(func(A) T) func(A) T](kf, getOrCreate)
}
// SingleElementCache creates a cache function for use with the [CacheCallback] method that has a maximum capacity of one single item
func SingleElementCache[K comparable, T any]() func(K, func() func() T) func() T {
return G.SingleElementCache[func() func() T, K]()
}