Re: Default ctor, etc generated by compiler for structs?
On Jun 16, 12:15 pm, Gavin Deane <deane_ga...@hotmail.com> wrote:
On 16 Jun, 10:48, Bharath <bharath.donni...@gmail.com> wrote:
On Jun 15, 7:59 pm, "BobR" <removeBadB...@worldnet.att.net> wrote:
JohnQ <johnqREMOVETHISprogram...@yahoo.com> wrote in message...
Are a default constructor, destructor, copy constructor and assignm=
ent
operator generated by the compiler for a struct if they are not
explicitely
defined?
#include <vector>
struct Hmmm{ int mmm; };
{
std::vector<Hmmm> SVmmm(2);
std::vector<Hmmm> SVtwo;
SVtwo = SVmmm;
}
Can that work? Does it meet the requirements for a std container?
[ my tests say: yes, no problem, dude! ]
Now, add something non-simple to the struct, and test again.
Your program is not a right e.g for the question asked. I think this
would have been misunderstood by query submitter. In this case,
actually, vector template class will take care of constructor stuff
for statement "std::vector<Hmmm> SVmmm(2);"
Yes, and one of the things the vector constuctor will do is to
default-construct 2 objects of type to populate SVmmm.
Just a nit, but the vector constructor will not
default-construct 2 objects. The compiler will
default-construct an argument to vector, which will copy this
object into the 2 objects in the vector.
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