buffer

[knarfo]

hello,
I would like to create buffer like the queue but then with a fixed length.
So when the last value is added then the first added value drops out:

position value
1 50
2 35
3 87

then value 29 is added and value 87 drops off:
position value
1 29
2 50
3 35



Does anybody know how to do that?

thanks
frank

 

[RiverGuy]

For last in first out, you can use a Stack object. However, I don't think you can set a fixed capacity with stack. You could easily create your own class to maintain an internal ArrayList with a fixed capacity and return the Last item in the list.

 

[chrissie1]

isn't that what a queue is for?



Christiaan Baes
Belgium

My Blog

 

[RiverGuy]

Queue is first in, first out. I think he wants last in, first out.

 

[chrissie1]

I have no idea what he wants.

Christiaan Baes
Belgium

My Blog

 

[knarfo]

HI,
The queue doesn't have a fixed length.
My buffer example has a fixed length of 3 positions.
I guess i'll use queue and when the length is 4 i'll degueue
one time. That makes the lenght 3 again.

I was hoping there would be a similar thing as stack or queue.

frank

 

[chrissie1]

yes the queue has a fixed length.

Dim q As New Queue(3)

Christiaan Baes
Belgium

My Blog