fold<T> abstract method

T fold<T>(
  1. T leftFn(
    1. L l
    ),
  2. T rightFn(
    1. R r
    )
)

Applies leftFn if this is a Left, or rightFn if this is a Right.

Implementation

T fold<T>(T Function(L l) leftFn, T Function(R r) rightFn);