Ajay: templatized in-class member initializers

main.cpp

#include <iostream>
#include <vector>

template <int M>
class myvec {
public:
    std::vector<double> v;
    myvec(double iv) : v(M, iv) {}
};

class A {
protected:
    int init(int i) {
        return i;
    }
//    template <typename T>
//        T val(int n) { return v; }

    template <int M>
    std::vector<double> create_vec(double iv) {
        return std::vector<double>(M, iv);
    }
    template <int M>
    myvec<M> create_myvec(double iv) {
        return myvec<M>(iv);
    }
};

class B : public A {
public:
    int initB() { return 3; }
    int j = init(5);
    int k = initB();
//    std::vector<int> z {val(8);
    std::vector<double> v { create_vec<10>(4) };
    myvec<10> w { create_myvec<10>(6) };
};

int main() {
    B b;
    std::cout << b.j << b.k << std::endl;
    for (auto entry : b.v)
        std::cout << entry << std::endl;
    for (auto entry : b.w.v)
        std::cout << entry << std::endl;
}