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archondas
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 Posted: Thu Dec 30, 2004 8:16 pm Post subject: Partial class template specialization fails to compile with |
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Dear C++ fellows,
Any special reason why the following code,
doesn't compile with Visual C++ 6.0 with Service Pack 6.0
while it compiles nicely with devcpp 5.0 or with any gnu-g++?
Here is the code!
-----------------
#include <iostream>
using std::cout;
using std::endl;
template<typename A, typename B>
class MyClass
{
};
template<typename A>
class MyClass<A, double>
{
public:
MyClass()
{
cout << "B = doublen";
}
};
template
class MyClass<int, B>
{
public:
MyClass()
{
cout << "A = intn";
}
};
int main()
{
MyClass
MyClass<int, char> b;
return 0;
}
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Brendan Bond
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| Posted: Fri Dec 31, 2004 1:14 pm Post subject: Re: Partial class template specialization fails to compile w |
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archondas wrote:
| Quote: | Dear C++ fellows,
Any special reason why the following code,
doesn't compile with Visual C++ 6.0 with Service Pack 6.0
while it compiles nicely with devcpp 5.0 or with any gnu-g++?
|
Visual C++ 6.0 is infamous for not being compliant with C++ standards.
It's a good bet that, if your code successfully compiles with gcc, the
errors come from Visual C++ 6.0's faults and not your code. I
recommend getting your hands on the latest Visual C++ compiler, both of
which (2003 .NET edition and the freely available 2005 Express Beta)
are very standards compliant.
-Brendan Bond
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L.Suresh
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| Posted: Fri Dec 31, 2004 1:17 pm Post subject: Re: Partial class template specialization fails to compile w |
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Does'nt have any problems. What error message did it give?
What about Visual C++ 7.0?
--lsu
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Bo Persson
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| Posted: Fri Dec 31, 2004 1:20 pm Post subject: Re: Partial class template specialization fails to compile w |
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"archondas" <dkouroun (AT) cc (DOT) uoi.gr> skrev i meddelandet
news:35bf40ae065ff8add90ca7b423c55121 (AT) localhost (DOT) talkaboutprogramming.com...
| Quote: | Dear C++ fellows,
Any special reason why the following code,
doesn't compile with Visual C++ 6.0 with Service Pack 6.0
while it compiles nicely with devcpp 5.0 or with any gnu-g++?
|
Yes, VC6 is an ancient compiler, model 1998. There are lots of things it
cannot handle, especially when it comes to templates. Partial
specialization is one of those.
Bo Persson
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Gerd Orfey
Guest
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| Posted: Sat Jan 01, 2005 1:17 am Post subject: Re: Partial class template specialization fails to compile w |
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archondas wrote:
| Quote: | Dear C++ fellows,
Any special reason why the following code,
doesn't compile with Visual C++ 6.0 with Service Pack 6.0
while it compiles nicely with devcpp 5.0 or with any gnu-g++?
Here is the code!
-----------------
#include <iostream
using std::cout;
using std::endl;
template
class MyClass
{
};
template
class MyClass
{
public:
MyClass()
{
cout << "B = doublen";
}
};
template
class MyClass
{
public:
MyClass()
{
cout << "A = intn";
}
};
int main()
{
MyClass
MyClass<int, char> b;
return 0;
}
|
Your program compiles fine with VC++7.1. So maybe its an option to use the
MS Visual C++ Toolkit 2003. Wich is compiler, linker and standard libraries
of Visual
Studio 2003 Professional, for free (no IDE). As far as I could see, there is
no
MFC and/or ATL support in this package. But I might be wrong.
More info here: http://msdn.microsoft.com/visualc/vctoolkit2003/
Search in the various news:microsoft.public.vc. newsgroups for help on
integrating
the toolkit with the VC6 IDE etc.
Regards
Gerd
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glongword
Guest
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| Posted: Sat Jan 01, 2005 9:29 am Post subject: Re: Partial class template specialization fails to compile w |
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Even VS.NET 2003 (7.1.3088) doesn't seem to handle template template
arguments. This code (stripped down basics/stack8.hpp from "C++
Templates" by David Vandevoorde and Nicolai Josuttis) doesn't compile.
Dev C++ 5 runs it, though.
#include <deque>
template <typename T,
template
class S>
class A
{
S<T> s;
};
int main()
{
A<int, std::deque> a;
}
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David Abrahams
Guest
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| Posted: Sun Jan 02, 2005 9:27 am Post subject: Re: Partial class template specialization fails to compile w |
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archondas wrote:
| Quote: | Dear C++ fellows,
Any special reason why the following code,
doesn't compile with Visual C++ 6.0 with Service Pack 6.0
while it compiles nicely with devcpp 5.0 or with any gnu-g++?
|
MSVC didn't acquire support for partial specialization until version 7.1
HTH,
--
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com
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