Function reduceWhile

reduceWhile reduces an iterable until the first None is encountered.

  • reduceWhile<T, U = T>(
        arr: T[],
        fn: (
            previousValue: U,
            currentValue: T,
            currentIndex: number,
            array: T[],
        ) => Option<U>,
        initialValue: U,
        thisArg?: any,
    ): U

  • 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.

    • 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.

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