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You may define a template member function outside of its class template definition. When you call a member function of a class template specialization, the compiler will use the template arguments that you used to generate the class template.
Defining a Function TemplateA function template starts with the keyword template followed by template parameter(s) inside <> which is followed by the function definition. In the above code, T is a template argument that accepts different data types ( int , float , etc.), and typename is a keyword.
A template allows us to create a family of classes or family of functions to handle different data types. Template classes and functions eliminate the code duplication of different data types and thus makes the development easier and faster. Multiple parameters can be used in both class and function template.
Explanation: As a template feature allows you to write generic programs. therefore a template function works with any type of data whereas normal function works with the specific types mentioned while writing a program.
Write this:
template <class T>
template <class U>
void MyClass<T>::foo() { /* ... */ }
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