. , .
, - , - . , , , . -, . ++: , , . , , :
/local/include/stl/_algo.h: In function 'struct _STL::_List_iterator<_STL::basic
_string<char,_STL::char_traits<char>,_STL::allocator<char> >,_STL::_Nonconst_tra
its<_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<char> > > >
_STL::find_if<_STL::_List_iterator<_STL::basic_string<char,_STL::char_traits<cha
r>,_STL::allocator<char> >,_STL::_Nonconst_traits<_STL::basic_string<char,_STL::
char_traits<char>,_STL::allocator<char> > > >, _STL::binder2nd<_STL::greater<int
> > >(_STL::_List_iterator<_STL::basic_string<char,_STL::char_traits<char>,_STL:
:allocator<char> >,_STL::_Nonconst_traits<_STL::basic_string<char,_STL::char_tra
its<char>,_STL::allocator<char> > > >, _STL::_List_iterator<_STL::basic_string<c
har,_STL::char_traits<char>,_STL::allocator<char> >,_STL::_Nonconst_traits<_STL:
:basic_string<char,_STL::char_traits<char>,_STL::allocator<char> > > >, _STL::bi
nder2nd<_STL::greater<int> >, _STL::input_iterator_tag)':
/local/include/stl/_algo.h:115: instantiated from '_STL::find_if<_STL::_List_i
terator<_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<char> >,
_STL::_Nonconst_traits<_STL::basic_string<char,_STL::char_traits<char>,_STL::all
ocator<char> > > >, _STL::binder2nd<_STL::greater<int> > >(_STL::_List_iterator<
_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<char> >,_STL::_N
onconst_traits<_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<c
har> > > >, _STL::_List_iterator<_STL::basic_string<char,_STL::char_traits<char>
,_STL::allocator<char> >,_STL::_Nonconst_traits<_STL::basic_string<char,_STL::ch
ar_traits<char>,_STL::allocator<char> > > >, _STL::binder2nd<_STL::greater<int>
>)'
testprog.cpp:18: instantiated from here
/local/include/stl/_algo.h:78: no match for call to '(_STL::binder2nd<_STL::grea
ter<int> >) (_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<cha
r> > &)'
/local/include/stl/_function.h:261: candidates are: bool _STL::binder2nd<_STL::g
reater<int> >::operator ()(const int &) const
|
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. , , . . .
, . , (, Visual Studio 2010) . , >> , 2 :
std::vector< std::vector< int >> vv;
:
std::vector< std::vector< int > > vv;
// ^
, . , , T value_type:
template < typename T >
class Test
{
T::value_type x;
};
T , T::value_type value_type. :
warning C4346: 'T::value_type': dependent name is not a type
prefix with 'typename' to indicate a type
see reference to class template instantiation 'Test<T>' being compiled
error C2146: syntax error: missing ';' before identifier 'x'
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
, T value_type , , typename :
template < typename T >
class Test
{
typename T::value_type x;
};
. , , , <, . template:
class Test
{
public:
template < typename T>
|
|
|
int f (T _x);
};
template < typename T >
void f (T _x)
{
Test t;
std::cout << t. template f< T >(_x);
// : std::cout << t.f< T >(_x);
}
. , , . , . , .
