associative arrays: iteration is finally here

[Simen Kjaeraas]

bearophile <bearophileHUGS at lycos.com> wrote:

> In nothrow functions you can use a different method, like "discard" (or  
> a similar name less intuitive than remove), that's like remove, but it  
> doesn't throw and just returns false when the key was absent.
> The idea is to use the safer method by default and the less safe one as  
> a performance optimization (or where you are sure you want that  
> semantics) in the other places.

Please elucidate, what is unsafe about deleting something that isn't there?

--
Simen