CODEWITHSUNDEEP
c++object-slicing
wheaties
wheaties

Reputation: 35980

References and Object Slicing

I don't have my Effective C++ with me and this is bugging me so much that I have to ask for my own sanity. Given

class Foo : public Bar{}

void MyFunc(Bar &_input);

If I pass in a Foo, am I tangling with the slicing problem or have I avoided it?

Upvotes: 17

Views: 5177

Answers (3)

Nikolai Fetissov
Nikolai Fetissov

Reputation: 84189

Since you are passing the reference - no, unless you later assign to an instance of Bar.

Upvotes: 6

Dima
Dima

Reputation: 39409

Slicing is only a problem when you cast an object to its parent class. There is no slicing when you cast pointers or references.

Upvotes: 2

Jason S
Jason S

Reputation: 189746

Not a problem, because you're passing in a reference. You're not creating a new object, just letting MyFunc access the original object.

Upvotes: 16

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