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Mastering C++ Programming by Jeganathan Swaminathan

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Template type auto-deduction for class templates

I'm sure you will love what you are about to see in the sample code.  Though templates are quite useful, a lot of people don't like it due to its tough and weird syntax. But you don't have to worry anymore; take a look at the following code snippet:

#include <iostream>using namespace std;template <typename T1, typename T2>class MyClass {     private:          T1 t1;          T2 t2;     public:          MyClass( T1 t1 = T1(), T2 t2 = T2() ) { }          void printSizeOfDataTypes() {               cout << "\nSize of t1 is " << sizeof ( t1 ) << " bytes." << endl;               cout << "\nSize of t2 is " << sizeof ( t2 ) << " bytes." << endl;     }};int main ( ) {    //Until C++14    MyClass<int, double> obj1;    obj1.printSizeOfDataTypes( );    //New syntax in C++17 MyClass obj2( ...

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