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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Booch: iterator invalidation
Date: 09 Nov 2002 14:20:05 +0000
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porton@ex-code.com (Victor Porton) writes:

> What are conditions when Booch iterators are invalidated?
> It is missing in the documentation.

Point taken.

> It also would be great to have the debug version of Booch, checking
> validity of iterators and raising an exception. With GNAT it can be
> done as in C by #ifdef/#endif preprocessor directives (assigning a
> long (may be 64, 128, or 256 bytes) counter incrementing on each
> invalidation to each container and analogous counters to iterators
> and comparing these counters).

I am not going to include GNAT-specific stuff in the BCs if I can help
it (and if there are any such I will do my best to remove them, just
let me know!).