From: David Abrahams (dave_at_[hidden])
Date: 2006-09-13 21:16:02
"Peter Dimov" <pdimov_at_[hidden]> writes:
>
> Your code is fine, sort of. The problem is that vector<>::resize takes two
> arguments. The second one has a default, but this information is lost when
> the pointer to member &std::vector<bool>::resize is taken. So you have to
> pass a value for it.
>
> std::for_each(vec.begin(),vec.end()
> ,boost::bind( &std::vector<bool>::resize, _1, 10, false ) );
And then there's the minor detail that you're not allowed to take the
address of standard library (member) functions... to be technically
portable and correct, you need to write a wrapper, e.g.
struct resize_vector_bool
{
template <class V, class N>
void operator()(V& v, N n) const
{
v.resize(n);
}
};
and then you can go back to using two arguments:
std::for_each(
vec.begin(), vec.end()
, boost::bind( resize_vector_bool(), _1, 10));
[unless we repealed that restriction in the committee while I wasn't looking]
-- Dave Abrahams Boost Consulting www.boost-consulting.com