public IObservable <string> Search_ConcatingTasks(string term)
{
var searchEngineA = new SearchEngineA();
var searchEngineB = new SearchEngineB();
IObservable <IEnumerable <string> > resultA = searchEngineA.SearchAsync(term).ToObservable();
IObservable <IEnumerable <string> > resultB = searchEngineB.SearchAsync(term).ToObservable();
return(resultA
.Concat(resultB)
.SelectMany(results => results));
}
public IObservable <string> Search(string term)
{
return(Observable.Create <string>(async x =>
{
var searchEngineA = new SearchEngineA();
var searchEngineB = new SearchEngineB();
var resultA = await searchEngineA.SearchAsync(term);
foreach (var result in resultA)
{
x.OnNext(result);
}
var resultB = await searchEngineB.SearchAsync(term);
foreach (var result in resultB)
{
x.OnNext(result);
}
x.OnCompleted();
}));
}