Difference between revisions of "CPP/Templates/ClassTemplateExplicitInstantiation"
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(→Point.cpp) |
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| − | == | + | ==ClassTemplateExplicitInstantiation.cpp== |
<source lang="cpp"> | <source lang="cpp"> | ||
#include <iostream> | #include <iostream> | ||
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#include "Point.h" | #include "Point.h" | ||
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int main(int argc, char* argv[]) | int main(int argc, char* argv[]) | ||
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Point<double> A; | Point<double> A; | ||
| − | cout << A.Add( ) << endl; | + | std::cout << A.Add( ) << std::endl; |
return 0; | return 0; | ||
} | } | ||
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#ifndef POINT_H | #ifndef POINT_H | ||
#define POINT_H | #define POINT_H | ||
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template <typename T> | template <typename T> | ||
class Point | class Point | ||
{ | { | ||
| − | + | T x,y,z; | |
public: | public: | ||
| − | + | double Add(); | |
}; | }; | ||
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#endif | #endif | ||
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#include "Point.h" | #include "Point.h" | ||
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template <typename T> | template <typename T> | ||
double Point<T>::Add() | double Point<T>::Add() | ||
{ | { | ||
| − | + | return 2.0 + 4.3; | |
}; | }; | ||
| − | // | + | // You are required to instantiate all classes you might use from this template |
| + | // since the function is not defined in the header. | ||
template class Point<double>; | template class Point<double>; | ||
template class Point<float>; | template class Point<float>; | ||
| − | / | + | </source> |
| + | ==CMakeLists.txt== | ||
| + | <source lang="cmake"> | ||
| + | Project(ClassTemplateExplicitInstantiation) | ||
| − | + | ADD_EXECUTABLE(ClassTemplateExplicitInstantiation ClassTemplateExplicitInstantiation.cpp Point.cpp) | |
</source> | </source> | ||
Latest revision as of 22:38, 29 January 2011
ClassTemplateExplicitInstantiation.cpp
#include <iostream> #include "Point.h" int main(int argc, char* argv[]) { Point<double> A; std::cout << A.Add( ) << std::endl; return 0; }
Point.h
#ifndef POINT_H #define POINT_H template <typename T> class Point { T x,y,z; public: double Add(); }; #endif
Point.cpp
#include "Point.h" template <typename T> double Point<T>::Add() { return 2.0 + 4.3; }; // You are required to instantiate all classes you might use from this template // since the function is not defined in the header. template class Point<double>; template class Point<float>;
CMakeLists.txt
Project(ClassTemplateExplicitInstantiation) ADD_EXECUTABLE(ClassTemplateExplicitInstantiation ClassTemplateExplicitInstantiation.cpp Point.cpp)
