Re: Avoid automatic copy constructor generation
On Oct 27, 10:20 pm, Erik Wikstr=F6m <Erik-wikst...@telia.com> wrote:
On 2008-10-27 19:29, Jeff Schwab wrote:
Juha Nieminen wrote:
Ian Collins wrote:
I can see the benefit of "= default", but what benefits
does "= delete" offer over private constructors?
Declaring a constructor private is more a hack than a clean
idiom. If you accidentally call the copy constructor from
the class itself, you will not get a clean compiler error,
but an obscure linker error, which is not really the best
possible solution.
That's true if the private constructors are declared
directly in the non-copyable class. I wonder whether
=delete offers anything over EBO/inheritance-based utilities
like boost::noncopyable.
Elegance and simplicity. A private copy-constructor is a hack
but boost::noncopyable is much worse, a complex solution to a
simple problem. Why should I have to inherit from some other
class just to make my class non-copyable?
Documentation. Inheritance defines an isA relationship. Your
class isA UncopiableObject.
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