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

If you don't want to use boost, but want to enjoy syntax like

std::vector v;
v+=1,2,3,4,5;

just include this chunk of code

template  class vector_inserter{
public:
    std::vector& v;
    vector_inserter(std::vector& v):v(v){}
    vector_inserter& operator,(const T& val){v.push_back(val);return *this;}
};
template  vector_inserter operator+=(std::vector& v,const T& x){
    return vector_inserter(v),x;
}