[Boost-users] circular_buffer: How to make push_back() increase capacity?

Subject: [Boost-users] circular_buffer: How to make push_back() increase capacity?
From: Robert Dailey (rcdailey_at_[hidden])
Date: 2009-08-28 18:17:32

Hello,
I have a list of colors that I need to be able to cycle through, either by
rotating the container or by using an iterator that will rotate (i.e. return
to the beginning when I increment at the end, and vice-versa). The goal is
to be able to iterate through the container in a circular way and process
all of the colors repeatedly.

I chose a boost::circular_buffer for this job, I assumed it was the perfect
tool for the job. It works great, except I would like to be able to call
push_back() to add all of my colors to the buffer without having to call
set_capacity() on it first. It's a minor thing, but omitting the call to
set_capacity() would make it slightly more scalable/manageable since I won't
have to keep incrementing the size of the capacity each time I want to add
colors to the buffer.

How can I achieve this?

---------
Robert Dailey