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nonchai
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 Posted: Wed Nov 22, 2006 7:45 am Post subject: Can anyone explain what the argument in: __test_type(int _Tp |
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Can anyone explain what the function argument in: __one __test_type(int
_Tp::*); means ?
Tp is a template place holder. It is in a function template. Here is
the
full code:
namespace __gnu_internal
{
typedef char __one;
typedef char __two[2];
template<typename _Tp>
__one __test_type(int _Tp::*);
template<typename _Tp>
__two& __test_type(...);
} // namespace __gnu_internal
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Ivan Novick
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| Posted: Wed Nov 22, 2006 9:10 am Post subject: Re: Can anyone explain what the argument in: __test_type(int |
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| Quote: | namespace __gnu_internal
{
typedef char __one;
typedef char __two[2];
template<typename _Tp
__one __test_type(int _Tp::*);
template<typename _Tp
__two& __test_type(...);
} // namespace __gnu_internal
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There are 2 versions of the template member function __test_type.
I read it as the first will get instantiated if you pass in a member
function pointer of the _Tp class and the second will get instantiated
for any other template argument and takes a variable number of
parameters.
Ivan
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