private void Button_Click_3(object sender, RoutedEventArgs e)
{
var svc = new PrimeCheckService();
//var subscription = Observable.Range(2, 10)
// .SelectMany((number) => svc.IsPrimeAsync(number),
// (number, isPrime) => new { number, isPrime})
// .Where(x => x.isPrime)
// .Select(x => x.number)
// .Subscribe(x => Console.WriteLine(x));
//var subscription = Observable.Range(2, 10)
// .SelectMany((number) => svc.IsPrimeAsync(number),
// (number, isPrime) => new { number, isPrime })
// .Where(x => x.isPrime)
// .Select(x => x.number)
// .Subscribe(x => Console.WriteLine(x));
var subscription1 = Observable.Range(2, 10)
.SelectMany(async(number) => await svc.IsPrimeAsync(number))
.Where(x => x)
.Select(x => x)
.Subscribe(x => Console.WriteLine(x));
//IObservable<int> primes =
// from number in Observable.Range(2, 10)
// from isPrime in svc.IsPrimeAsync(number)
// where isPrime
// select number;
//primes.Subscribe(x => Console.WriteLine(x));
}
private void Button_Click_4(object sender, RoutedEventArgs e)
{
var svc = new PrimeCheckService();
IObservable <int> primes =
Observable.Range(2, 10)
.Select(async number => new { number, isPrime = await svc.IsPrimeAsync(number) })
.Concat()
.Where(x => x.isPrime)
.Select(x => x.number);
primes.Subscribe(x => Console.WriteLine(x));
}