map<U> abstract method

  1. @useResult
Result<U, E> map<U>(
  1. U map(
    1. T value
    )
)

Transforms the contained value, if any, by applying map to it.

Examples

// prints "Ok(4)"
print(const Ok<int, String>(2).map((value) => value * 2));

// prints "Err(error)"
print(const Err<int, String>('error').map((value) => value * 2));

Implementation

@useResult
Result<U, E> map<U>(U Function(T value) map);