void Node::addDependantRes(const Node* res)
{
dependants.push_back(res);
}
const correctness and vector
Author
Ok I have a simple method that adds a Node* to a vector<Node*>.
This gives me an error. My understanding of const Node* res is that the object being pointed to cannot be modified through res, which it isnt, unless push_back() works way different than I think.
Any help?
Also, making a method const means that no changes will occur to *this?
Thanks.
the vector would need to be
std::vector<const Node *> dependants;
pretty much the same reason you can't do:
const Node *pF = new Node;
Node *pF2 = pF;
unless pF2 was const as well, or pF is not const.
std::vector<const Node *> dependants;
pretty much the same reason you can't do:
const Node *pF = new Node;
Node *pF2 = pF;
unless pF2 was const as well, or pF is not const.
Quote:Original post by AcidInjury
Ok I have a simple method that adds a Node* to a vector<Node*>.
*** Source Snippet Removed ***
This gives me an error. My understanding of const Node* res is that the object being pointed to cannot be modified through res, which it isnt, unless push_back() works way different than I think.
You attempt to store it in a vector<Node*>, which means that you will be retrieving non-const pointers to it, and it can be modified through them. As was pointed out, you need a vector<const Node*> (or take a non-const pointer).
Quote:Also, making a method const means that no changes will occur to *this?
Yes. (Except for members marked mutable.)
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