What is the easiest way to initialize a std::vector with hardcoded elements?

Question

I can create an array and initialize it like this:

int a[] = {10, 20, 30};

How do I create a std::vector and initialize it sim

Answer 1

B. Stroustrup describes a nice way to chain operations in 16.2.10 Selfreference on page 464 in the C++11 edition of the Prog. Lang. where a function returns a reference, here modified to a vector. This way you can chain like v.pb(1).pb(2).pb(3); but may be too much work for such small gains.

#include 
#include 

template
class chain
{
private:
    std::vector _v;
public:
    chain& pb(T a) {
        _v.push_back(a);
        return *this;
    };
    std::vector get() { return _v; };
};

using namespace std;

int main(int argc, char const *argv[])
{
    chain v{};

    v.pb(1).pb(2).pb(3);

    for (auto& i : v.get()) {
        cout << i << endl;
    }

    return 0;
}

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