public static IStream <T> FirstOnly <T>(this IStream <T> stream)
{
return(new AnonymousStream <T>((Action <T> reaction, Priority p) =>
{
SingleAssignmentDisposable disp = new SingleAssignmentDisposable();
disp.Disposable = stream.Listen(val =>
{
reaction(val);
disp.Dispose();
}, p);
return disp;
}));
}
public static IEmptyStream FirstOnly(this IEmptyStream stream)
{
return(new AnonymousEmptyStream((Action reaction, Priority p) =>
{
SingleAssignmentDisposable disp = new SingleAssignmentDisposable();
disp.Disposable = stream.Listen(() =>
{
reaction();
disp.Dispose();
}, p);
return disp;
}));
}
private static IOnceEmptyStream OnceEmptyStream(IEmptyStream stream)
{
return(new AnonymousEmptyStream((Action reaction, Priority p) =>
{
SingleAssignmentDisposable disp = new SingleAssignmentDisposable();
disp.Disposable = stream.Listen(() =>
{
reaction();
disp.Dispose();
}, p);
return disp;
}));
}
static public IStream <T> Join <T>(this IStream <IStream <T> > stream)
{
return(new AnonymousStream <T>((Action <T> reaction, Priority p) =>
{
SingleAssignmentDisposable mainDisposable = new SingleAssignmentDisposable();
SingleAssignmentDisposable inner = new SingleAssignmentDisposable();
ListDisposable group = new ListDisposable {
mainDisposable, inner
};
mainDisposable.Disposable = stream.Listen((IStream <T> innerStream) =>
{
var newDisp = innerStream.Listen(val =>
{
reaction(val);
}, p);
inner.Dispose();
inner.Disposable = newDisp;
}, p);
return group;
}));
}