Re: local classes and boost::function
On Aug 8, 7:15 am, "gast...@hotmail.com" <gast...@hotmail.com> wrote:
On Aug 7, 7:07 pm, John Moeller <fishc...@gmail.com> wrote:
gast...@hotmail.com wrote:
Then don't put it in the global namespace. Put it in the anonymous
namespace in the implementation file that contains Translate:
namespace {
struct Local
{
Local (int iFrom, int iTo) : m_pr(iFrom, iTo) {}
void operator()(Status* p) const
{
if (p->test(m_pr.first))
{
p->reset(m_pr.first);
p->set(m_pr.second);
}
}
std::pair<int, int> m_pr;
};
};
void Foo::Translate(int iFrom, int iTo)
{
const Local loc(iFrom, iTo);
Parse(loc); //forget it
}
Unfortunately the actual class is a template and so the sources are in
header file. I don't know if this anonymous namespace is scalable to
header files. At least the defintion of the functor si not at the same
place where it is used.
In that case you can put it in the private area of the template class
as a nested class.
These aren't ideal and it would be fantastic if a couple of the
(arbitrary seeming) restrictions on this sort of thing could be lifted
in the next standard.
K
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