Function selectCommentFactory

Returns (
    state: { comments: CommentsState; settings: SettingsState },
    ...params: [],
) => Comment | undefined & {
    clearCache: () => void;
    resetResultsCount: () => void;
    resultsCount: () => number;
} & {
    dependencies: [
        (
            state: { comments: CommentsState; settings: SettingsState },
        ) => Map<number, Comment>,
    ];
    dependencyRecomputations: () => number;
    lastResult: () => Comment | undefined;
    memoizedResultFunc: (
        ...resultFuncArgs: [Map<number, Comment>],
    ) => Comment | undefined & {
        clearCache: () => void;
        resetResultsCount: () => void;
        resultsCount: () => number;
    };
    recomputations: () => number;
    resetDependencyRecomputations: () => void;
    resetRecomputations: () => void;
    resultFunc: (
        ...resultFuncArgs: [Map<number, Comment>],
    ) => Comment | undefined;
} & {
    argsMemoize: <Func extends AnyFunction>(
        func: Func,
        options?: WeakMapMemoizeOptions<ReturnType<Func>>,
    ) => Func & {
        clearCache: () => void;
        resetResultsCount: () => void;
        resultsCount: () => number;
    };
    memoize: <Func extends AnyFunction>(
        func: Func,
        options?: WeakMapMemoizeOptions<ReturnType<Func>>,
    ) => Func & {
        clearCache: () => void;
        resetResultsCount: () => void;
        resultsCount: () => number;
    };
}

• • (
        state: { comments: CommentsState; settings: SettingsState },
        ...params: [],
    ): Comment | undefined

  • A function that takes a state and returns data that is based on that state.

    Parameters

    • state: { comments: CommentsState; settings: SettingsState }

      The first argument, often a Redux root state object.

    • ...params: []

      All additional arguments passed into the selector.

    Returns Comment | undefined

    A derived value from the state.

• clearCache: () => void

• resetResultsCount: () => void

• resultsCount: () => number

• dependencies: [
      (
          state: { comments: CommentsState; settings: SettingsState },
      ) => Map<number, Comment>,
  ]

  The array of the input selectors used by createSelector to compose the combiner (memoizedResultFunc).

• dependencyRecomputations: () => number

  Counts the number of times the input selectors (dependencies) have been recalculated. This is distinct from recomputations, which tracks the recalculations of the result function.

  Since

  5.0.0

• lastResult: () => Comment | undefined

  Returns

  The last result calculated by memoizedResultFunc.

• memoizedResultFunc: (...resultFuncArgs: [Map<number, Comment>]) => Comment | undefined & {
      clearCache: () => void;
      resetResultsCount: () => void;
      resultsCount: () => number;
  }

  The memoized version of resultFunc.

• recomputations: () => number

  Counts the number of times memoizedResultFunc has been recalculated.

• resetDependencyRecomputations: () => void

  Resets the count dependencyRecomputations for the input selectors (dependencies) of a memoized selector.

  Since

  5.0.0

• resetRecomputations: () => void

  Resets the count of recomputations count to 0.

• resultFunc: (...resultFuncArgs: [Map<number, Comment>]) => Comment | undefined

  The final function passed to createSelector. Otherwise known as the combiner.

• argsMemoize: <Func extends AnyFunction>(
      func: Func,
      options?: WeakMapMemoizeOptions<ReturnType<Func>>,
  ) => Func & {
      clearCache: () => void;
      resetResultsCount: () => void;
      resultsCount: () => number;
  }

  The optional memoize function that is used to memoize the arguments passed into the output selector generated by createSelector (e.g., lruMemoize or weakMapMemoize).

  When passed directly into createSelector, it overrides the argsMemoize function initially passed into createSelectorCreator. If none was initially provided, weakMapMemoize will be used.

  Example

  import { createSelector, weakMapMemoize } from 'reselect'
  
  const selectItemsByCategory = createSelector(
    [
      (state: RootState) => state.items,
      (state: RootState, category: string) => category
    ],
    (items, category) => items.filter(item => item.category === category),
    { argsMemoize: weakMapMemoize }
  )
  Copy

  Default

  weakMapMemoize
  Copy

  Since

  5.0.0

• memoize: <Func extends AnyFunction>(
      func: Func,
      options?: WeakMapMemoizeOptions<ReturnType<Func>>,
  ) => Func & {
      clearCache: () => void;
      resetResultsCount: () => void;
      resultsCount: () => number;
  }

  The memoize function that is used to memoize the resultFunc inside createSelector (e.g., lruMemoize or weakMapMemoize).

  When passed directly into createSelector, it overrides the memoize function initially passed into createSelectorCreator.

  Example

  import { createSelector, weakMapMemoize } from 'reselect'
  
  const selectItemsByCategory = createSelector(
    [
      (state: RootState) => state.items,
      (state: RootState, category: string) => category
    ],
    (items, category) => items.filter(item => item.category === category),
    { memoize: weakMapMemoize }
  )
  Copy

  Since

  5.0.0