Re: [boost] Re: any_function (callback) library

From: Peter Dimov (pdimov_at_[hidden])
Date: 2001-04-14 10:42:59

From: "David Abrahams" <abrahams_at_[hidden]>

> > Anyway, I think that the basic idea of having two
separately-configurable
> > precondition macros is sound.
>
> Maybe for some people. My approach to programming is based on making
> absolute distinctions wherever possible. So many design choices can be
made
> with so many degrees of freedom that I need ways to simplify my world. I
> find ways to settle things so I don't have to keep thinking about them (I
> think you can see this in my approach to exception-safety). Asking me to
> decide whether each precondition check might compete for cycles with the
> rest of my code, or whether it might be the straw that finally pushes my
> inner loop out of the cache will make it harder for me to write code and
> will be a disincentive to add the precondition check at all.

If you want to avoid taking responsibility for the decision, you can always
label the check as 'costly.'

--
Peter Dimov
Multi Media Ltd.