Function reduceWhile

reduceWhile reduces an iterable until the first None is encountered.

  • Type Parameters

    • T
    • U = T

    Parameters

    • arr: T[]

      An array

    • fn: ((previousValue: U, currentValue: T, currentIndex: number, array: T[]) => Option<U>)

      A function that produces an Option.

        • (previousValue, currentValue, currentIndex, array): Option<U>
        • Parameters

          • previousValue: U
          • currentValue: T
          • currentIndex: number
          • array: T[]

          Returns Option<U>

    • initialValue: U

      The initial value.

    • OptionalthisArg: any

      If provided, it will be used as the this value for each invocation of predicate. If it is not provided, undefined is used instead.

    Returns U

    The reduced value.