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Subject: Re: [boost] [Containers] How about a list with O(1) splice?
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2011-10-06 07:50:50

Vicente Botet wrote:
> Dave Abrahams wrote:
> > on Wed Oct 05 2011, "Vicente J. Botet Escriba"
> > <> wrote:
> >
> >> I think that it is better to have the freedom to choose the
> >> implementation more adapted to each context.
> >
> > I think the amount of interface and documentation
> > complication needed to achieve that isn't worth the gains
> > over a "usually O(1) size implementation." If you really
> > want the next size() to be O(1) after a splice all you need
> > to do is... call size().
> How the call to size() make later call to size() O(1)?

I think he was referring to your amortized constant time size(). The first call notices the dirty flag and computes the size in linear time. The second, and subsequent calls, will be constant time.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer using std::disclaimer;
Dev Tools & Components
Susquehanna International Group, LLP


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