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Mohanasundaram
Guest
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 Posted: Fri Feb 25, 2005 2:09 pm Post subject: Template resolution problem |
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Hi All,
I am facing a problem with a piece of code which compiles and
works on windows. but it does not compile on g++. I am trying to figure
out is it a problem with the code which does not adhere to C++ standard
and windows compiler is not strict on that. I am using g++ version
3.2.3. Is the code correct? If not please advise.
#include<iostream.h>
class Employee
{
public:
static void showError()
{
cout<<"this shows error"<
}
};
template
class MyContainer
{
public:
ItemType add(ItemType a, ItemType b);
};
class ASLDAPServices
{
public:
template <class MemberType>
MemberType add(MemberType a, MemberType b);
};
template <class MemberType>
MemberType ASLDAPServices::add(MemberType a, MemberType b)
{
return a+b;
}
class ASLDAPGroup
{
public:
template <class MemberType>
void addIt()
{
ASLDAPServices ad;
MemberType i = ad.add<MemberType>(12,34);
cout<
}
};
int main()
{
ASLDAPGroup grp;
grp.addIt
return 0;
}
$ g++ -o test1 test1.cpp
In file included from /usr/include/c++/3.2.3/backward/iostream.h:31,
from test1.cpp:1:
/usr/include/c++/3.2.3/backward/backward_warning.h:32:2: warning:
#warning This file includes at least one deprecated or antiquated
header. Please consider using one of the 32 headers found in section
17.4.1.2 of the C++ standard. Examples include substituting the <X>
header for the <X.h> header for C++ includes, or <sstream> instead of
the deprecated header <strstream.h>. To disable this warning
use -Wno-deprecated.
test1.cpp: In member function `void ASLDAPGroup::addIt()':
test1.cpp:44: syntax error before `;' token
Regards,
Mohan.
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Victor Bazarov
Guest
|
| Posted: Fri Feb 25, 2005 2:15 pm Post subject: Re: Template resolution problem |
|
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"Mohanasundaram" <mohanasundaram.chandran (AT) gmail (DOT) com> wrote...
| Quote: | I am facing a problem with a piece of code which compiles and
works on windows. but it does not compile on g++. I am trying to figure
out is it a problem with the code which does not adhere to C++ standard
and windows compiler is not strict on that. I am using g++ version
3.2.3. Is the code correct? If not please advise.
#include<iostream.h
|
#include
using std::cout;
using std::endl;
| Quote: |
class Employee
{
public:
static void showError()
{
cout<<"this shows error"<
}
};
template
class MyContainer
{
public:
ItemType add(ItemType a, ItemType b);
};
class ASLDAPServices
{
public:
template
MemberType add(MemberType a, MemberType b);
};
template
MemberType ASLDAPServices::add(MemberType a, MemberType b)
|
template
MemberType ASLDAPServices<MemberType>::add( ...
| Quote: | {
return a+b;
}
class ASLDAPGroup
{
public:
template <class MemberType
void addIt()
{
ASLDAPServices ad;
MemberType i = ad.add
cout<
}
};
int main()
{
ASLDAPGroup grp;
grp.addIt
return 0;
}
$ g++ -o test1 test1.cpp
In file included from /usr/include/c++/3.2.3/backward/iostream.h:31,
from test1.cpp:1:
/usr/include/c++/3.2.3/backward/backward_warning.h:32:2: warning:
#warning This file includes at least one deprecated or antiquated
header. Please consider using one of the 32 headers found in section
17.4.1.2 of the C++ standard. Examples include substituting the <X
header for the
the deprecated header <strstream.h>. To disable this warning
use -Wno-deprecated.
test1.cpp: In member function `void ASLDAPGroup::addIt()':
test1.cpp:44: syntax error before `;' token
|
Which one is line 44? You have at least 3 lines in that function that
end on a semicolon. Why do we have to guess?
V
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Mohanasundaram
Guest
|
| Posted: Fri Feb 25, 2005 2:18 pm Post subject: Re: Template resolution problem |
|
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Hi Victor,
Sorry for that
Here is that line
MemberType i = ad.add<MemberType>(12,34);
Regards,
Mohan.
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Mohanasundaram
Guest
|
| Posted: Fri Feb 25, 2005 2:29 pm Post subject: Re: Template resolution problem |
|
|
Hi Victor,
I changed the code as per your suggestion but it is giving the
following error
Changed code:
----------------------
template <class MemberType>
MemberType ASLDAPServices<MemberType>::add(MemberType a, MemberType b)
{
return a+b;
}
error:
-------
$ g++ -o test1 test1.cpp
In file included from /usr/include/c++/3.2.3/backward/iostream.h:31,
from test1.cpp:1:
/usr/include/c++/3.2.3/backward/backward_warning.h:32:2: warning:
#warning This file includes at least one deprecated or antiquated
header. Please consider using one of the 32 headers found in section
17.4.1.2 of the C++ standard. Examples include substituting the <X>
header for the <X.h> header for C++ includes, or <sstream> instead of
the deprecated header <strstream.h>. To disable this warning
use -Wno-deprecated.
test1.cpp:32: non-template type `ASLDAPServices' used as a template
test1.cpp: In member function `void ASLDAPGroup::addIt() [with
MemberType =
int]':
test1.cpp:53: instantiated from here
test1.cpp:44: no matching function for call to
`ASLDAPServices::add(int, int)'
$
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Victor Bazarov
Guest
|
| Posted: Fri Feb 25, 2005 3:44 pm Post subject: Re: Template resolution problem |
|
|
"Mohanasundaram" <mohanasundaram.chandran (AT) gmail (DOT) com> wrote...
| Quote: | Hi Victor,
I changed the code as per your suggestion but it is giving the
following error
Changed code:
----------------------
template <class MemberType
MemberType ASLDAPServices
{
return a+b;
}
|
My bad. Should be
template<class MemberType>
MemberType ASLDAPServices::add<MemberType>(MemberType a, MemberType b)
....
V
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