Re: [Boost-users] Re: [Foreach]TroubleiteratingoverBoost.MultiIndexcontainers

David Abrahams wrote:

"Peter Dimov" writes:

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Uh, wait. iterator_traits was not well designed, I'll grant you, but all the same, I'd call using iterator_traits<X>::reference to mean "the return type of *x" a definite no-no. Just think about the consequences of all those other type names in iterator_traits.

Well, what else could it mean? :-)

Leaving aside the fact that in real life it is underspecified and used inconsistently, it could mean "the return type of *x where x is an iterator."

One interesting example is that Lambda used iterator_traits<X>::reference in exactly such a way, to infer the type of *x. I _almost_ put all the iterator_traits<> type names in shared_ptr just to make it work.