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return[ing] a smart pointer by const &.

From: ArbolOne
Subject: return[ing] a smart pointer by const &.
Date: Sat, 27 Feb 2010 05:17:40 -0800 (PST)
User-agent: G2/1.0

Hello boys and girls!
My function returns a smart pointer as follows
const Onelib::MySmartPointer<Twolib::someMethod1>&

This function works OK, however, someone told me that it was not a
wise idea to return a smart pointer by const &.
It was not possible to ask what was meant by the comment or what
better solution would be there. So, I am asking here. Any body?

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