createCachedSelector2<S, R1, R2, K, T> function
SelectorClass<S, K, T>
createCachedSelector2<
S, R1, R2, K, T>( - Selector<S, R1> selector1,
- Selector<S, R2> selector2,
- T combiner(
- R1,
- R2
),
- Selector<S, K> keySelector, {
- Map<K, Selector<S, T>>? cacheObject,
})
Implementation
SelectorClass<S, K, T> createCachedSelector2<S, R1, R2, K, T>(
Selector<S, R1> selector1,
Selector<S, R2> selector2,
T Function(R1, R2) combiner,
Selector<S, K> keySelector, {
Map<K, Selector<S, T>>? cacheObject,
}) {
final cache = cacheObject ?? FlatMapCache<K, Selector<S, T>>();
return SelectorClass(
cache,
(S state) => cache.putIfAbsent(
keySelector(state),
() => createSelector2(
selector1,
selector2,
combiner,
)));
}