gistfile1.txt

// actual implementation
void scale(const Vector& a, float scale, Vector& output)
{
    for (auto i=0; i<a.vlen; i++)
        output[i]=a[i]*scale;
}

// wrapper, for syntatic ease, should be auto-generated
Vector& scale(const Vector& a, float scale)
{
    output = allocate(a.vlen);
    scale(a, scale, output);
    retun output;
}

int size=2;
Vector a(size);
float scale=2;


// auto allocation
Vector b=scale(a, scale);

// manual buffer
Vector buffer(size);
scale(a, scale, output);

// inplace
scale(a, scale, a);