Restrict the Types of Template Argument for a Template Class

You can restrict the type of template arguments for a template class by using the Forward template declaration.

Suppose you have a template class and you want to instantiate it only for types int and double:

//test.htemplateclass test{public:     test(type x);     type getValue();     type m_value;};//test.cpp#include "test.h"template test;//Forward template declarationtemplate test;//Forward template declarationtemplatetest::test(type t):m_value(t){}templatetype test< type >:: getValue (){     return m_value;}#include "test.h"int main(){     test t1(123);		//This will compile     test t2(6.5);	//This will compile          cout << t1. getValue () << endl;     cout << t2. getValue () << endl;         // test t3(sau);	//This will not compile     return 0;}
Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

technology leadership

Why the World Needs More Technology Leadership

As a fact, technology has touched every single aspect of our lives. And there are some technology giants in today’s world which have been frequently opined to have a strong influence on recent overall technological influence. Moreover, those tech giants have popular technology leaders leading the companies toward achieving greatness.

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job