/// <summary>
/// Projects the result of the task into a new form.
/// </summary>
public static IAwaitable <TResult> Select <TResult>(this IAwaitable input, Func <TResult> f)
{
var result = new Awaitable <TResult>();
input.Subscribe(() => result.Emit(f()));
return(result);
}
/// <summary>
/// Creates a task that completes (or cancels) when either the input task completes or the cancellation token is signalled.
/// On cancellation, the original task still runs to completion because there is no way to preemptively cancel it.
/// </summary>
public static IAwaitable WithCancellation(this IAwaitable input, CancellationToken ct)
{
var result = new Awaitable(ct);
input.Subscribe(() => result.Emit());
return(result);
}
/// <summary>
/// Creates a task that completes (or cancels) when either the input task completes or the cancellation token is signalled.
/// On cancellation, the original task still runs to completion because there is no way to preemptively cancel it.
/// </summary>
public static IAwaitable <T> WithCancellation <T>(this IAwaitable <T> input, CancellationToken ct)
{
var result = new Awaitable <T>(ct);
input.Subscribe(v => result.Emit(v));
return(result);
}
/// <summary>
/// Creates a continuation that executes when the target task completes.
/// </summary>
public static IAwaitable <TResult> ContinueWith <TResult>(this IAwaitable awaitable, Func <TResult> fun)
{
var result = new Awaitable <TResult>();
awaitable.Subscribe(() =>
{
result.Emit(fun());
});
return(result);
}
/// <summary>
/// Creates a continuation that executes when the target task completes.
/// </summary>
public static IAwaitable ContinueWith <TResult>(this IAwaitable awaitable, Action fun)
{
var result = new Awaitable();
awaitable.Subscribe(() =>
{
fun();
result.Emit();
});
return(result);
}
/// <summary>
/// Creates a continuation that executes when the target task completes.
/// </summary>
public static IAwaitable ContinueWith <T>(this IAwaitable <T> awaitable, Action <T> action)
{
var result = new Awaitable();
awaitable.Subscribe(v =>
{
action(v);
result.Emit();
});
return(result);
}