On Thu, 6 Dec 2007, vheinitz wrote:
Hello,
I am porting code which was compiling on gcc 3.2.2 to gcc 4
I am using (GCC) 4.1.2 20061115 (prerelease) (SUSE Linux)
Looks like std::map hasn't typedef data_type whereas map::key_type is
still there.
SGI's implementation seems to provide map::data_type
Is there any other way to get data_type from std::map?
P.S.: Code I have to port has sth. like this:
template<typename T>
T::data_type GetSomeDataFromMap( T m )
{
return m[0];
}
std::map::mapped_type
regards,
lajos
GCC 4.1.2 source code:
template <typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
class map
{
public:
typedef _Key key_type;
typedef _Tp mapped_type;
typedef std::pair<const _Key, _Tp> value_type;
typedef _Compare key_compare;
typedef _Alloc allocator_type;
SGI STL source code:
template <class _Key, class _Tp, class _Compare, class _Alloc>
class map {
public:
// requirements:
__STL_CLASS_REQUIRES(_Tp, _Assignable);
__STL_CLASS_BINARY_FUNCTION_CHECK(_Compare, bool, _Key, _Key);
// typedefs:
typedef _Key key_type;
typedef _Tp data_type;
typedef _Tp mapped_type;
typedef pair<const _Key, _Tp> value_type;
typedef _Compare key_compare;
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