Is there ANY EVER reason why i would return an object or variable by reference? to me this doesn't make sense and is very bad.
maybnxtseasn 0 Newbie Poster
NicAx64 76 Posting Pro
you'll end up with hell of a debugging time.
:) contaz you got the job, you walk in a part where demons and monsters are willingly
ready to kill you.
thelamb 163 Posting Pro in Training
Yes there is, e.g. in the 'singleton' pattern. Or when you have a global static class that holds objects that should be modifiable.
Usually though, you are right that you don't want to do this. But returning a const& is very common, for example in getter functions.
mrnutty 761 Senior Poster
When you create an array class, if you overload the [] operator, then you need to return by reference and return by const reference. So in some situation, it is necessary.
NicAx64 76 Posting Pro
references are more civilized than pointers only
because it looks easy to read, but it have all the
dangours that are associated with the pointers.
mrnutty 761 Senior Poster
references are more civilized than pointers only
because it looks easy to read, but it have all the
dangours that are associated with the pointers.
Not quite. You can assign a null to a pointer but not to a reference.
Narue 5,707 Bad Cop Team Colleague
Is there ANY EVER reason why i would return an object or variable by reference?
Yes, certainly. However, there's a strong distinction between returning by reference and returning by const reference. The latter gives you all of the potential performance benefits of returning by reference without the potential to lose control over your data.
Returning by non-const reference is still useful at times, but typically these times involve container classes and smart pointers. Yes, there are certainly dangers involved in aliasing, but it's our job as developers to decide when and where those dangers are justified.
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