Re: Simple C-style structs in std::vector
"Ivan Novick" <ivan@0x4849.net> schrieb im Newsbeitrag
news:1167875317.837600.178310@31g2000cwt.googlegroups.com...
Hi,
I have a structure that looks like this:
struct Foo
{
char msg[50];
char data[50];
};
Can these Foo objects be put into a std::vector? i.e. are they
CopyConstructable and Assignable?
I can not see any reasons why they would not be.
They are, you can put them into any STL container you like. No problem.
Also what happens if it looks like this instead:
struct Bar
{
char* msg;
char* data;
};
The only issue i can see here is that if a Bar is added to a vector
with memory allocated to its msg and data pointers and the object is
removed from the vector without the program first deallocating said
memory, it will leak... but that can be handled in the program and
should not prevent the usage of Bar objects in a std::vector.
Technically Bar is copy-constructable and assignable, too, so you can put
them into any container. But you have to free the memory pointed to by
Bar::msg and Bar::data yourself. That is dangerous and error prone. So you
should consider using std::string instead of C style strings. But it's up to
you. After all, it's your foot, you are aiming at.
HTH
Heinz
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