(C++) Template class

 

A template class is a class that takes a template parameter. Or: a template class defines how a group of classes should be generated, as opposed to a class in C++ as being how the group of objects should be generated:

 

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template <class T> struct MyClass {   T x; }; int main() {   MyClass<int> m;   m.x = 10; }

 

Many STL classes are template classes.

 

There is no semantic difference between class and typename in a template-parameter [1].

 

 

 

 

 

Examples

 

• Example 1: class holding a templated member variable
• Example 2: class that has a class template type
• Example 3: class that has an integer template type
• Example 4: class that has an enum class template type
• Example 5: copy policy of integer class
• Example 6: copy policy of template class type, two specialized classes
• Example 7: copy policy of template class type, two partially specialized classes

 

 

 

 

 

References

 

1. C++. International Standard. ISO/IEC 14882. Second edition. Paragraph 14.1.2.