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Date: Fri, 30 May 2003 13:22:24 -0400
From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: Ideas for Ada 200X
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Date: 2003-05-30T13:22:24-04:00
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Stephen Leake wrote:
> You seem to be implying that "foo++" means something other than "foo =
> foo + 1" in C++. Hmm. Quoting "The C++ Programming Language, Special
> Edition" by Stroustrup, section 6.2.5:

He's talking about the effect of these operators on built-in types.
But you are permitted to define ++ and -- operators for your own
types as well, and then the semantics are what you want.

The C++ standard library defines ++ and -- operators for its
iterators, with the natural meaning of move to the next or
previous item. It also defines adding integers to iterators,
but only for random access iterators where the addition takes
constant time. For iterators which would take linear time,
these operations are not defined.