Re: plain iterator to vector<const int>
Ian Collins wrote:
Barry wrote:
t wrote:
Can you use a plain iterator to vector<const int> to write to it? It
doesn't seem like it should be possible, but Visual C++ 2005 Express
lets me:
vector<const int> vc;
vc.push_back(5);
vector<const int>::iterator iter = vc.begin();
*iter = 3; // compiles
Well,
element type used in standard container should be Assignable
/const int/ is not a model of Assignable.
Now, concept check is still not part of standard.
So this is not a bug.
I thought the first bug was accepting the the push_back.
I posted before I saw your post.
[code:
std::cout
<< typeid(std::vector<const int>::value_type).name()
<< std::endl;
std::cout
<< typeid(std::allocator<const int>::value_type).name()
<< std::endl;
--End-code]
MSVC8 produces:
int
int
that's why the code compiles.
[std:
20.4.1 The default allocator [lib.default.allocator]
template <class T> class allocator {
public:
....
typedef T value_type;
-- End-std]
So, actually allocator has a bug.
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