Re: [Boost-users] BOOST_STATIC_ASSERT with boost::array.static_size

Subject: Re: [Boost-users] BOOST_STATIC_ASSERT with boost::array.static_size
From: Antony Polukhin (antoshkka_at_[hidden])
Date: 2013-07-12 05:07:58

2013/7/11 Anton Daneyko <self_at_[hidden]>

> Dear boost users, could someone tell me why this short program does not
> compile?
>
> #include <boost/array.hpp>
> #include <boost/static_assert.hpp>
>
> int main(int argc, const char *argv[])
> {
>   boost::array<int, 3> a1 = {{1, 1, 1}};
>   BOOST_STATIC_ASSERT(a1.static_size == 3);
>   return 0;
> }
>

You must write BOOST_STATIC_ASSERT(boost::array<int, 3>::static_size == 3);
Here is a fixed version:

#include <boost/array.hpp>
#include <boost/static_assert.hpp>

int main(int argc, const char *argv[])
{
  typedef boost::array<int, 3> array_t;
  array_t a1 = {{1, 1, 1}};
  BOOST_STATIC_ASSERT(array_t::static_size == 3);
  return 0;
}

-- 
Best regards,
Antony Polukhin