Module selectors

Index

Primary API Functions

Primary API Functions

Const createCompoundSelector

createCompoundSelector<S, B, A1, AN>(selectors: [Selector<S, A1>, ...LiftToSelector<S, AN>[]], fn: (...selectorResults: [A1, ...SelectorResults<LiftToSelector<S, AN>>[]]) => B, memoize?: Memoize): Selector<S, B>

- Defined in selectors.ts:65
Create a selector from numerous other selectors. Advised to use type inference over supplying these types.
example
```
const selectA: Selector<S, A>;
const selectB: Selector<S, B>;
const selectAB = createCompoundSelector(
    [selectA, selectB],
    (a, b) => ...)
);
```
Type parameters
- S
  
  State type
- B
  
  Return type
- A1
  
  The return type of the first selector in the given selectors array
- AN: any[]
  
  The tuple of return types for the remaining selectors
Parameters
- selectors: [Selector<S, A1>, ...LiftToSelector<S, AN>[]]
  
  Selectors whom results shall be passed to fn
- fn: (...selectorResults: [A1, ...SelectorResults<LiftToSelector<S, AN>>[]]) => B
  
  Take the results of the given the selectors and return some value B
  - - (...selectorResults: [A1, ...SelectorResults<LiftToSelector<S, AN>>[]]): B
    - Parameters
      - Rest ...selectorResults: [A1, ...SelectorResults<LiftToSelector<S, AN>>[]]
      Returns B
- memoize: Memoize = ...
  
  Defaulted: Memoize implementation
Returns Selector<S, B>

Const createSelector

createSelector<S, A>(fn: (s: S) => A, memoize?: Memoize): Selector<S, A>

- Defined in selectors.ts:38
Memoized function from S to A
example
```
const selectFoo = createSelector<{foo: boolean}, boolean>(state => state.foo);
```
Type parameters
- S
  
  State type
- A
  
  Result type
Parameters
- fn: (s: S) => A
  
  Create an A from S
  - - (s: S): A
    - Parameters
      - s: S
      Returns A
- memoize: Memoize = ...
  
  Defaulted: Memoize implementation
Returns Selector<S, A>

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