Solved

Partial template specialization issues

Posted on 2009-07-11
11
227 Views
Last Modified: 2012-05-07
Hello.

Is there anyway for me to accomplish something as follows where the specialised template is only specialised for a number of parameters (in this case 1), rather than them all?

Thanks,
Uni
template<typename TA, typename TB=int>

class CClass{

};
 

template<>

class CClass<typename TA, double>{

};

Open in new window

0
Comment
Question by:Unimatrix_001
  • 6
  • 2
11 Comments
 
LVL 12

Expert Comment

by:Let_Me_Be
ID: 24831715
Yes, but only in the opposite direction (left to right).
template < typename A, typename B >

class SomeClass

{

    A a;

    B b;

};
 

template < typename B >

class SomeClass<int,B>

{

    int a;

    B b;

};

Open in new window

0
 
LVL 3

Author Comment

by:Unimatrix_001
ID: 24831725
Yeugh... this template business just keeps getting uglier every turn! :(
0
 
LVL 86

Accepted Solution

by:
jkr earned 500 total points
ID: 24831726
Yes, that can be done, only the syntax  is different:
template<typename TA, typename TB=int>

class CClass{

};

 

template<typename TA>

class CClass<TA,double>{

};

Open in new window

0
 
LVL 3

Author Comment

by:Unimatrix_001
ID: 24831730
Ack - accepted too early... jrk mind opening this question please?
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 3

Author Comment

by:Unimatrix_001
ID: 24831763
Yes if you wouldn't mind. Thanks.
0
 
LVL 12

Expert Comment

by:Let_Me_Be
ID: 24831776
Sorry for the confusion :)

For some reason I had really stored in my memory that you have to do partial specialization from left to right (and I can't figure out why).
0
 
LVL 3

Author Comment

by:Unimatrix_001
ID: 24831780
LMB, don't let it worry you. ;) Not a problem at all.

Uni.
0
 
LVL 3

Author Closing Comment

by:Unimatrix_001
ID: 31602459
...and closed again! ;)
0
 
LVL 3

Author Comment

by:Unimatrix_001
ID: 24831829
Cheers.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
Written by John Humphreys C++ Threading and the POSIX Library This article will cover the basic information that you need to know in order to make use of the POSIX threading library available for C and C++ on UNIX and most Linux systems.   [s…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.

930 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now