C++ - return pointer or const reference -


i have container has vector of objects. 

class container {     vector<foo> objects;

i want to

  • have read access these objects caller
  • avoid calling copy constructor
  • ignore problem of accessing these objects after container goes out of scope (this never happen)

based on that, seems have 2 choices getter method. either return const reference vector, or return pointer const vector

const vector<foo> & getref() { return objects; } const vector<foo> * getptr() { return &objects; }

of course, if i'm caller, need make sure not call copy constructor when iterate. i'd this

for (const foo & f : getref())

and not

for (foo f : getref())

now, should return const reference? or pointer const? what's benefits , drawbacks?

a reference more robust. can't accidentally call delete on it.


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