Initial commit

{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf350

{\fonttbl\f0\fswiss\fcharset0 Helvetica;}

{\colortbl;\red255\green255\blue255;}

\margl1440\margr1440\vieww9000\viewh8400\viewkind0

\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural\pardirnatural

\f0\fs24 \cf0 No work files for this lesson...}

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{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf350

{\fonttbl\f0\fswiss\fcharset0 Helvetica;}

{\colortbl;\red255\green255\blue255;}

\margl1440\margr1440\vieww9000\viewh8400\viewkind0

\pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\ql\qnatural\pardirnatural

\f0\fs24 \cf0 No work files for this lesson...}

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#ifndef CRTP1_H

#define CRTP1_H

class Base {

protected:

    virtual int get_value() const = 0;

public:

    virtual ~Base() {}

    int return_data() const { return this->get_value(); }

};

class Derived : public Base {

private:

    int get_value() const override {

        return 10;

    }

};

#endif //CRTP1_H

#ifndef CRTP2_H

#define CRTP2_H

template<typename D>

class Base2 {

public:

    D& derived() {

        return static_cast<D&>(*this);

    }

    int return_data() { return derived().get_value(); }

};

class Derived2 : public Base2<Derived2> {

public:

    int get_value() const { return 100; }

};

#endif //CRTP2_H

#include <iostream>

#include "crtp2.h"

int main() {

    Base2<Derived2> b2;

    std::cout << b2.return_data() <<std::endl;

    return 0;

}

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