[boost] Re: Collections vs. variable-size array

From: Neal D. Becker (ndbecker2_at_[hidden])
Date: 2004-05-07 07:52:47

Neal D. Becker wrote:

> This simple test fails to compile on gcc-3.3.3.  Any thoughts?
> 
> #include <boost/collection_traits.hpp>
> #include <iostream>
> #include <iterator>
> #include <algorithm>
> 
> using namespace std;
> 
> int F (int size) {
>   int a[size];
> 
>   copy (boost::begin (a), boost::end (a), ostream_iterator<int> (cout, "
> "));
> }
> 

Adding these specializations fixes the variable size array problem, at least
with gcc-3.4.  Is there a reason for not using these? 
----------------------------------------
template< typename T >
inline const T* begin( const T* array)
{
    return array;
}

template< typename T >
inline T* begin( T* array)
{
    return array;
}
-----------------------------------------

 collections has the more complex:

template< typename T, std::size_t sz >
inline const T* begin( const T (&array)[sz] )
{
    return array;
}

template< typename T, std::size_t sz >
inline T* begin( T (&array)[sz] )
{
    return array;
}

-------------------------------------------