How to take vector from class

[alexas]

Hello,

I have classes:

Polymer::Polymer()
    : _monomers(std::vector<Monomer>())

So I have created several Polymer objects , let's say p1, p2, p3. And now I want to compare the monomer vector of p1 with p2. What would be the proper way to do that, how to access the vector values of the class object?

[alexas]

I am succeeding only if I am creating get function:

const std::vector<T> & getVector() const
{
return vector;
}
usage:

const std::vector<T> &v = myClass.getVector();

But is this really a proper way?

[keskiverto]

I want to compare the monomer vector of p1 with p2.

Compare how?

Is it enough to get true, when vectors are identical?

[alexas]

No. Each monomer consists of another class which Cuboid

Monomer::Monomer()
    _geometry(Rectangle3D(1.0f, 1.0f, 1.0f))

which:

Rectangle3D::Rectangle3D()
        : _cuboid_length(1.0f)
        , _cuboid_width(1.0f)
        , _cuboid_height(1.0f)

So I have several polymer objects, and want to take each monomer of every of each and compare their parameters. Eventually I will write intersection function, but for now let's say I just want to know if polymer1.monomer1.length >polymer2.monomer1.length

[keskiverto]

I did mean, is the comparison something that Polymers do:

bool Polymer::compare( const Polymer& rhs )
{
  // code
}

or something that you do with Polymers:

T compare( const Polymer& lhs, const Polymer& rhs )
{
  const std::vector<Monomer> &lv = lhs.getVector();
  const std::vector<Monomer> &rv = rhs.getVector();
  // code
}

[alexas]

Thank you for your help. If I want to compare the monomers of the polymers I guess it is something that I do with Polymers/