how-to initialize 'const std::vector' like a c array

Question

Is there an elegant way to create and initialize a const std::vector like const T a[] = { ... } to a fixed (and small) number of val

Answer 1

Old question, but I ran into the same issue today, here's the approach that was most acceptable for my purposes:

vector initVector(void)
{
    vector initializer;
    initializer.push_back(10);
    initializer.push_back(13);
    initializer.push_back(3);
    return intializer;
}

int main()
{
    const vector a = initVector();
    return 0;
}

Example to avoid excessive copying:

vector & initVector(void)
{
    static vector initializer;
    if(initializer.empty())
    {
        initializer.push_back(10);
        initializer.push_back(13);
        initializer.push_back(3);
    }
    return intializer;
}

int main()
{
    const vector & a = initVector();
    return 0;
}