Function either

either<U>(def): (<T>(mapper) => ((list) => U))
Transforms the list either the current value exists or not.
Type Parameters
- U
Parameters
- def: (() => U)
  The function to produce default value.
  - - (): U
    - Returns U
Returns (<T>(mapper) => ((list) => U))
The transformed value.
- - <T>(mapper): ((list) => U)
  - Type Parameters
    - T
    Parameters
    - mapper: ((x, xs) => U)
      (x, xs): U
      Parameters
      x: T
      xs: List<T>
      Returns U
    Returns ((list) => U)
    - - (list): U
      - Parameters
        list: List<T>
        Returns U
- Defined in src/list.ts:356

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