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From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2007-12-11 11:48:56

David Abrahams skrev:
> on Sun Dec 09 2007, Thorsten Ottosen <> wrote:

>> says that erase() does not throw for ordered containers (which is
>> correct). Anyway, this means any argument used to assume that predicate
>> evaluation is a no-throw should be the same for unordered containers.
> No, the ordered containers don't do any predicate evaluation in
> erase().

How can you implement

   std::set<T>::erase( const T& )

then, if you are not going to find the equivalent elements by evaluating

>> Why does erase( const_iterator ) (and range version), not provide the
>> no-throw guarantee?
> Why should it? Vector/deque erase don't.

Because it is a node based container.

>> Does erase give the strong guarantee otherwise?
>> Since erase(const Key&) for ordered containers cannot throw, so I guess
>> it is implicitly required that Pred(x,y) must not throw?
> Nope, see above.

Still don't get it.


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