public static ParallelTaskWrapper <TRes> SelectMany <TCur, TNext, TRes>(this ParallelTaskWrapper <TCur> source, Func <TCur, SequentialTaskWrapper <TNext> > exec, Func <TCur, TNext, TRes> mapper)
{
async Task <TRes> GetResult()
{
var arg1 = await source;
var arg2 = await exec(arg1).Task;
return(mapper(arg1, arg2));
}
return(new ParallelTaskWrapper <TRes>(GetResult()));
}
public static ParallelTaskWrapper <TRes> SelectMany <TCur, TNext, TRes>(this ParallelTaskWrapper <TCur> source, Func <TCur, ParallelTaskWrapper <TNext> > exec, Func <TCur, TNext, TRes> mapper)
{
ParallelTaskWrapper <TNext> nextWrapper;
try
{
nextWrapper = exec(default(TCur));
}
catch (NullReferenceException e)
{
throw new Exception(NotResolvedParamErrorText, e);
}
async Task <TRes> GetResult()
{
var arg1 = await source.Task;
var arg2 = await nextWrapper.Task;
return(mapper(arg1, arg2));
}
return(new ParallelTaskWrapper <TRes>(GetResult()));
}
public static TaskAwaiter <T> GetAwaiter <T>(this ParallelTaskWrapper <T> source) => source.Task.GetAwaiter();
public static ParallelTaskWrapper <TRes> Select <TCur, TRes>(this ParallelTaskWrapper <TCur> source, Func <TCur, TRes> mapper)
{
return(new ParallelTaskWrapper <TRes>(source.Task.ContinueWith(t => mapper(t.Result))));
}