orElseGet method

Future<T> orElseGet(
  1. T fallback(
    1. Object error
    )
)

Completes with the result of fallback if this future throws.

Use when the fallback is expensive or depends on the error.

Example:

final data = await load().orElseGet((e) => cachedData);

Implementation

Future<T> orElseGet(T Function(Object error) fallback) =>
    catchError((Object error) => fallback(error));