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From: David Abrahams (dave_at_[hidden])
Date: 2005-08-30 12:39:49

Matt Calabrese <rivorus_at_[hidden]> writes:

> As much as I love MPL, I have come across a couple more problems. First, on
> MSVC++ 7.1, "count" returns 0 with maps, when there is an element in the map
> with the specified key

That behavior matches the specified semantics of "count" perfectly:

Elements of a map are pairs.

> (and probably on other compilers as well, though I
> haven't checked the implementation). As well, while a 3-argument form of
> "at" is described in documentation (where the third argument is the default
> type returned by "at" if an element with the provided key does not exist in
> the container), it does not appear to be implemented in 1.33.

You're right. Aleksey?

Dave Abrahams
Boost Consulting

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