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

It is pretty convenient to create a vector inline without defining variable when writing test, for example:

assert(MyFunction() == std::vector{1, 3, 4}); // <- this.