Update of last item pushed? about cqueue HOT 2 CLOSED

Hello,

you probably want to save space, but typically, you would need a second queue for this, one xIFO to accumulate data for a day (or a simple buffer you're averaging on as you acquire new data) and the daily FIFO.

In a queue, once you put an item in it, there's no real reason to change the stored data.
I already had a use case where I needed to reformat the data from a queue; I used 2 queues for this, one to get the "raw" data, and the other one to store the reformated data.

Your q_delPrev() function would act somewhat like a LIFO on a FIFO.

I understand your use case, and constraints you may have, but I'm not sure this functionality really belongs to the queue itself.

Let me know what you think,
And sorry for the delay in answering,
Regards,
SMFSW

from cqueue.

Hello,

you are right, a queue should rather not be overloaded with strange things. ;-)

I will store the current daily amount (which I already get from the sensor) in a separate variable until I finally push it into the FIFO.

Thanks again!

Regards,
Matthias

from cqueue.