protected override ISingleStream <TOut> CreateOutputStream(EnsureSingleArgs <TOut> args)
{
return(base.CreateSingleStream(args.Input.Observable.Map((i, idx) =>
{
if (idx > 0)
{
throw new Exception($"{this.NodeName}: There are more than one element in the stream");
}
else
{
return i;
}
})));
}
public EnsureSingleStreamNode(string name, EnsureSingleArgs <TOut> args) : base(name, args)
{
}