(C++) TemplateClassExample5

 

Template class example 5: copy policy of integer class is a template class example.

 - Download the Qt Creator project 'CppTemplateClassExample5' (zip)

Technical facts

 

Operating system(s) or programming environment(s)

• Lubuntu 15.04 (vivid)

IDE(s):

• Qt Creator 3.1.1

Project type:

• Console application

C++ standard:

• C++98

Compiler(s):

• G++ 4.9.2

Libraries used:

• STL: GNU ISO C++ Library, version 4.9.2

 

 

 

 

 

Qt project file: ./CppTemplateClassExample5/CppTemplateClassExample5.pro

 

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include(../../ConsoleApplication.pri) include(../../Libraries/Boost.pri) SOURCES += main.cpp

 

 

 

 

 

./CppTemplateClassExample5/main.cpp

 

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enum class IntCopyPolicy { allow, forbid }; template <IntCopyPolicy copy_policy> struct Int; template <> struct Int<IntCopyPolicy::forbid> {   Int(const int x) : m_x(x) {}   Int<IntCopyPolicy::forbid>(const Int<IntCopyPolicy::forbid>&) = delete;   Int<IntCopyPolicy::forbid>& operator=(const Int<IntCopyPolicy::forbid>&) = delete;   private:   int m_x; }; template <> struct Int<IntCopyPolicy::allow> {   Int(const int x) : m_x(x) {}   private:   int m_x; }; int main() {   const Int<IntCopyPolicy::allow> a(123);   const Int<IntCopyPolicy::forbid> b(123);   const Int<IntCopyPolicy::allow> c(a);   //const Int<IntCopyPolicy::forbid> d(b); //Won't compile }