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Asked: 2026-05-11T03:44:06+00:00

#include iostream #include vector class ABC { }; class VecTest { std::vector<ABC> vec; public:

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#include 'iostream' #include 'vector'  class ABC {  };  class VecTest {    std::vector<ABC> vec;    public:    std::vector<ABC> & getVec() const { //Here it errors out       return vec;   }  };

Removing the const fixes it , is it not the case that getVec is a constant method. So why is this not allowed?

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1 Answer

  1. What you should probably be doing is returning a const reference.

    const std::vector& getVec() const { return vec; }

    It’s not allowed because you’ve said getVec is a const method, meaning the method should not change the this object in any way. Returning a non-const reference would possibly allow its object to be changed, so the compiler doesn’t allow it.

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