On Thursday 25 April 2002 12:40 pm, Lars Gullik Bjønnes wrote:
> Angus Leeming <[EMAIL PROTECTED]> writes:
> | What's the official take on putting functors in namespace anon and then
> | passing them to an STL routine?
> |
> | Here, I get warnings like:
> | cxx: Warning: /usr/include/cxx/algorithm.cc, line 110: #1115-D external
> | routine
> | uses unnamed type or namespace.
> | InputIterator find_if (InputIterator first, InputIterator last, Predicate
> | pred)
> | --------------^
> |
> | I'm quite happy to turn this warning off. Just curious about Best
> | Practice. Whatever that is.
>
> I belive it should be ok.
>
> What's not ok is using local classes for this:
>
> class Foo {
> class Functor {};
>
> void do_stuff() {
> find_if(..., Functor());
> }
> };
I'm hazy about why not. Because it can go out of scope? See, hazy! Could you
lift my fog?
Angus
