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Template member of template class implementation in header file
Are static class variables possible in Python?Use 'class' or 'typename' for template parameters?Why have header files and .cpp files?Why can templates only be implemented in the header file?When can I use a forward declaration?Where and why do I have to put the “template” and “typename” keywords?Why are C++ inline functions in the header?Is std::unique_ptr<T> required to know the full definition of T?“Undefined reference to” template class constructorImage Processing: Algorithm Improvement for 'Coca-Cola Can' Recognition
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I have a class that looks like this
template<class T>
class Matrix
...
template<class T2> auto dot(Matrix<T2> const& other);
Here is my implementation, under the declaration in the header file :
template<class T, class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
[impl]
The error I get looks like this :
(C2244) 'Matrix<T>::dot' : unable to match function definition to an existing declaration
Where am I going wrong ?
c++ class templates header-files generic-programming
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
add a comment
|
I have a class that looks like this
template<class T>
class Matrix
...
template<class T2> auto dot(Matrix<T2> const& other);
Here is my implementation, under the declaration in the header file :
template<class T, class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
[impl]
The error I get looks like this :
(C2244) 'Matrix<T>::dot' : unable to match function definition to an existing declaration
Where am I going wrong ?
c++ class templates header-files generic-programming
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21
add a comment
|
I have a class that looks like this
template<class T>
class Matrix
...
template<class T2> auto dot(Matrix<T2> const& other);
Here is my implementation, under the declaration in the header file :
template<class T, class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
[impl]
The error I get looks like this :
(C2244) 'Matrix<T>::dot' : unable to match function definition to an existing declaration
Where am I going wrong ?
c++ class templates header-files generic-programming
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
I have a class that looks like this
template<class T>
class Matrix
...
template<class T2> auto dot(Matrix<T2> const& other);
Here is my implementation, under the declaration in the header file :
template<class T, class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
[impl]
The error I get looks like this :
(C2244) 'Matrix<T>::dot' : unable to match function definition to an existing declaration
Where am I going wrong ?
c++ class templates header-files generic-programming
c++ class templates header-files generic-programming
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
asked Mar 28 at 11:14
MagixMagix
1,2792 gold badges12 silver badges33 bronze badges
1,2792 gold badges12 silver badges33 bronze badges
You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21
add a comment
|
You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21
You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21
You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21
add a comment
|
1 Answer
1
active
oldest
votes
The syntax is wrong. You have a function template with template parameter T2 within a class template with template parameter T . It has to be defined like this:
template<class T>
template<class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
add a comment
|
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The syntax is wrong. You have a function template with template parameter T2 within a class template with template parameter T . It has to be defined like this:
template<class T>
template<class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
add a comment
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The syntax is wrong. You have a function template with template parameter T2 within a class template with template parameter T . It has to be defined like this:
template<class T>
template<class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
add a comment
|
The syntax is wrong. You have a function template with template parameter T2 within a class template with template parameter T . It has to be defined like this:
template<class T>
template<class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
The syntax is wrong. You have a function template with template parameter T2 within a class template with template parameter T . It has to be defined like this:
template<class T>
template<class T2>
auto Matrix<T>::dot(Matrix<T2> const& other)
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
answered Mar 28 at 11:17
P.WP.W
22.2k4 gold badges23 silver badges61 bronze badges
22.2k4 gold badges23 silver badges61 bronze badges
add a comment
|
add a comment
|
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You just can't mix two template declarations together, buddy :)
– L. F.
Mar 28 at 11:21