Reply To: object范式与stream范式

[Todd]

今天我用C#的yield实现了一个无限流的Stack。Stack的输入是(operation, data)的流，输出是(data)流:

class Stack{

public static IEnumerable<int> Transform(IEnumerable<Command> aSourceStream){

LinkedList<int> list = new LinkedList<int>();

foreach(Command command in aSourceStream){

if(OperationType.PUSH== command.Operation){

list.AddLast(command.Data);

}

else if (OperationType.POP == command.Operation){

int data = list.Last.Value;

list.RemoveLast();

yield return data;

}

}

}

}