unwrapOrElse abstract method

  1. @useResult
T unwrapOrElse(
  1. T calculateDefaultValue(
    1. E error
    )
)

Returns the contained value, if any, or the result of calculateDefaultValue otherwise.

Examples

// prints "2"
print(const Ok<int, String>(2).unwrapOrElse((_) => 3));

// prints "3"
print(const Err<int, String>('error').unwrapOrElse((_) => 3));

Implementation

@useResult
T unwrapOrElse(T Function(E error) calculateDefaultValue);