错误：呼叫C ++没有匹配功能

Question

I am new to C++. I have implemented a B+ tree and it is working fine on Macbook (with CLion) but when I run it on a ubuntu server it gives the compilation error below. Can someone help with this please?

error: no matching function for call to 
‘std::vector<std::__cxx11::basic_string<char> 
>::vector(__gnu_cxx::__normal_iterator<const 
std::__cxx11::basic_string<char>*, 
std::vector<std::__cxx11::basic_string<char> > >, 
std::vector<std::__cxx11::basic_string<char> >::iterator)’

Result of g++ -v on Mac:

Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/usr/include/c++/4.2.1 Apple LLVM version 9.0.0 (clang-900.0.38) Target: x86_64-apple-darwin16.7.0 Thread model: posix InstalledDir: /Library/Developer/CommandLineTools/usr/bin

Result of g++ -v on ubuntu server:

gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5)

Code snippet where error is thrown:

    std::pair<InternalNode *, Node *> split(int order) {
    std::vector<float>::const_iterator old_dn_keys_end = keys.begin() + ceil(float(order) / 2) - 2;
    std::vector<std::string>::const_iterator old_dn_values_end = values.begin() + ceil(float(order) / 2) - 2;
    new_dn->keys = std::vector<float>(old_dn_keys_end + 1, keys.end());

   //**--- error here ---**
   new_dn->values = std::vector<std::string>(old_dn_values_end + 1, 
   values.end());
   //rest of the code...
}

Answer 1

Constructing a std::vector with iterators requires them to be the same type. It looks like you're constructing it with a vector<>::const_iterator and a vector<>::iterator (via .end() ).

Either make old_dn_values_end a non-const iterator or use .cend() .