Hello!
I have an assertion failure using std::vector::const_iterator and
boost::transform_iterator.
I have a constant seq of constant string pairs delimited by special
character (here ':'). My application needs only once to iterate through
these pairs and return iterator ranges from the beginning until the colon
and after colon until the end. I thought a transform iterator can do the
job. I get in the marked position an assertion failure using MSVC 2005
Express Edition.
Here the code snippet with problem description:
#include <string>
#include <vector>
#include <utility>
#include <functional>
#include
#include
#include
#include
typedef boost::iterator_rangestd::string::const_iterator
iter_range;
typedef std::pair
result_type;
struct string_splitter : std::unary_function
{
result_type operator()(std::string const& s)const throw()
{
iter_range r1(s.begin(), s.begin() + s.find(":"));
iter_range r2(r1.end()+1, s.end());
return result_type(r1,r2);
}
};
typedef std::vectorstd::string
str_vector;
typedef str_vector::const_iterator
vector_citer;
typedef boost::transform_iterator
msg_opcode_citer;
int main()
{
//create vector of strings and put 2 strings inside
str_vector v;
v.push_back(std::string("test1:opcode1"));
v.push_back(std::string("test2:opcode2"));
//!!!increment operator or dereference operator cause an assertion
failure!!!
// stating: "vector iterators incompatible"
for(msg_opcode_citer curr = msg_opcode_citer(const_cast(v).begin(), string_splitter()), end;
curr != end; ++curr)
{
result_type t = *curr;
}
return 0;
}
Did I miss something?
With Kind Regards,
Ovanes Markarian
