public static Outcome <IEnumerable <ResultType> > ThenForEach <T, ResultType>(this Outcome <IEnumerable <T> > @this, Func <ResultType> fn)
{
if ([email protected])
{
return(Outcome <IEnumerable <ResultType> > .Reject(@this.FailureOrThrow()));
}
return(Outcome.Of(() => @this.ResultOrDefault(Enumerable.Empty <T>()).Select(_ => fn())));
}
public static Outcome <T> Catch <T>(this Outcome <T> @this, Func <T> fn)
{
if (IsIgnorable(@this))
{
return(@this);
}
return(Outcome.Of(() => fn()));
}
public static Outcome <ResultType> Map <T, ResultType>(this Outcome <T> @this, Func <ResultType> fn)
{
if ([email protected])
{
return(Outcome <ResultType> .Reject(@this.FailureOrNull()));
}
return(Outcome.Of(fn));
}
public static Outcome <T> Catch <T>(this Outcome <T> @this, Func <Failure, T> fn)
{
if (IsIgnorable(@this))
{
return(@this);
}
return(Outcome.Of(() => fn(@this.FailureOrThrow())));
}
public static Outcome <ResultType> Then <T, ResultType>(this Outcome <T> @this, Func <T, ResultType> fn)
{
if ([email protected])
{
return(Outcome <ResultType> .Reject(@this.FailureOrNull()));
}
return(Outcome.Of(() => fn(@this.ResultOrDefault())));
}
public static Outcome <T> Catch <T>(this Outcome <T> @this, Filter filter, Func <T> fn)
{
if (!IsCatchable(@this, filter))
{
return(@this);
}
return(Outcome.Of(() => fn()));
}
/*
* ***********************************************************************************
* Async Operations
* ***********************************************************************************
*/
public static async Task <Outcome <T> > Catch <T>(this Task <Outcome <T> > @this, Func <Failure, T> fn)
{
var outcome = await @this.ConfigureAwait(false);
if (IsIgnorable(outcome))
{
return(outcome);
}
return(Outcome.Of(() => fn(outcome.FailureOrNull())));
}
public static Task <Outcome <ReturnType> > Map <T, ReturnType>(this Outcome <T> outcome, Func <Task <ReturnType> > asyncFunc)
{
if (outcome.IsSuccessful)
{
return(Outcome.Of(asyncFunc));
}
return(Outcome <ReturnType>
.Reject(outcome.FailureOrNull())
.ForAsync());
}
/*
* ***********************************************************************************
* Async Operations
* ***********************************************************************************
*/
public static async Task <Outcome <T> > Catch <T>(this Task <Outcome <T> > @this, Filter filter, Func <Failure, T> fn)
{
var outcome = await @this;
if (!IsCatchable(outcome, filter))
{
return(outcome);
}
return(Outcome.Of(() => fn(outcome.FailureOrNull())));
}
public static async Task <Outcome <ResultType> > Map <T, ResultType>(this Task <Outcome <T> > asyncPromise, Func <ResultType> func) //where ResultType: class
{
return(await Try(async() => {
var outcome = await asyncPromise;
if (outcome.IsSuccessful)
{
return Outcome.Of(func);
}
return Outcome <ResultType> .Reject(outcome.FailureOrNull());
}));
}
/// <summary>
/// Applies the given function on all elements of the input enumerable and
/// returns an enumerable of the results.
/// </summary>
/// <typeparam name="TResult">The return type of the generator function.</typeparam>
/// <typeparam name="TParam">The element type of the input enumerable.</typeparam>
/// <param name="parameters">The input enumerable.</param>
/// <param name="generator">The function to be applied.</param>
/// <returns>The enumerable of results.</returns>
public static Outcome <IEnumerable <TResult> > MapAll <T, TResult>(
this Outcome <IEnumerable <T> > @this,
Func <T, TResult> fn)
{
if ([email protected])
{
return(Outcome <IEnumerable <TResult> >
.Reject(@this.FailureOrThrow()));
}
return(Outcome.Of(
() => @this
.ResultOrDefault(Enumerable.Empty <T>())
.Select(r => fn(r))
));
}
