public static async Task <Result <TValue, TFailure> > ToResultAsync <TValue, TFailure>(this Option <TValue> option, Func <Task <TFailure> > failureFactory)
where TValue : notnull
where TFailure : notnull
{
if (failureFactory == null)
{
throw new ArgumentNullException(nameof(failureFactory));
}
if (option.TryGetValue(out var some))
{
return(Result.Success <TValue, TFailure>(some));
}
return(Result.Failure <TValue, TFailure>(await failureFactory.Invoke()));
}
public static async Task <Option <TValue> > BindOnNoneAsync <TValue>(this Option <TValue> option, Func <Task <Option <TValue> > > bind)
where TValue : notnull
=> option.TryGetValue(out _) ? option : await bind();
public static async Task <TValue> ValueOrDefaultAsync <TValue>(this Option <TValue> option, Func <Task <TValue> > valueFactory)
where TValue : notnull
=> option.TryGetValue(out var some) ? some : await valueFactory.Invoke();
public static async Task <Option <TValue> > DoOnNoneAsync <TValue>(this Option <TValue> option, Func <Task> @do)
where TValue : notnull
=> await option.DoAsync(DelegateCache <TValue> .Task, @do);
public static Task ApplyAsync <TValue>(this Option <TValue> option, Func <TValue, Task> applyWhenSome, Func <Task> applyWhenNone)
where TValue : notnull
=> option.DoAsync(applyWhenSome, applyWhenNone);
public static Task <Option <TFailure> > Failure <TSuccess, TFailure>(this Task <Result <TSuccess, TFailure> > result) => result.Match(_ => Option.None <TFailure>(), Option.Some);
public static Task <Option <TValue> > DoAsync <TValue>(this Option <TValue> option, Func <TValue, Task> @do)
where TValue : notnull
=> option.DoAsync(@do, DelegateCache.Task);
public static Task <Option <TSuccess> > Success <TSuccess, TFailure>(this Task <Result <TSuccess, TFailure> > result) => result.Match(Option.Some, _ => Option.None <TSuccess>());
public static Option <TSuccess> ToOption <TSuccess, TFailure>(this Result <TSuccess, TFailure> result) => result.Match(Option.Some, _ => Option.None <TSuccess>());
public static Task <Result <Option <TResult>, TFailure> > BindIfSomeAsync <TSuccess, TFailure, TResult>(this Result <Option <TSuccess>, TFailure> result, Func <TSuccess, Task <Result <Option <TResult>, TFailure> > > bind) => result.BindAsync(success => success.MatchAsync(bind, () => Task.FromResult(Result.Success <Option <TResult>, TFailure>(Option.None <TResult>()))));
public static Result <Option <TResult>, TFailure> BindIfSome <TSuccess, TFailure, TResult>(this Result <Option <TSuccess>, TFailure> result, Func <TSuccess, Result <Option <TResult>, TFailure> > bind) => result.Bind(success => success.Match(bind, () => Result.Success <Option <TResult>, TFailure>(Option.None <TResult>())));
public static Task <Result <Option <TResult>, TFailure> > BindIfSomeAsync <TSuccess, TFailure, TResult>(this Result <Option <TSuccess>, TFailure> result, Func <TSuccess, Task <Result <TResult, TFailure> > > bind) => result.BindAsync(success => success.MatchAsync(async value => (await bind(value)).Select(Option.Some), () => Task.FromResult(Result.Success <Option <TResult>, TFailure>(Option.None <TResult>()))));