如何检测双键盘ReactiveUI

Question

如何检测双键盘（如双钥匙进入）随着ReactiveUI

Answer 1

如何：

doubleEnter = someWindow.Events().KeyUp 
    .Where(x => x.EventArgs.Key == Key.Enter) 
    .Buffer(TimeSpan.FromMilliseconds(650), RxApp.MainThreadScheduler) 
    .Where(x => x.Length > 1);