On 2/20/07, Pavol Droba <droba@topmail.sk> wrote:
Pavol,
Thank for your help. I thought you said 'The question marks can be substituted by string_split::value_type'. In one of our previous exchange.
That is why I am using 'string_split::value_type' not 'iterator_range<string::iterator>'
Sorry if I mis-understand what you teach me.
No worries.
There is no problem with using string_split::value_type. It is just a typedef to iterator_range<string::iterator>. In your code, you misplaced it with string_split itself.
I change the integer_compare class to use iterator_range<string::iterator>&. And I am trying to loop thru the iterator_range inside the function() of integer_compare: bool operator() (const iterator_range<string::iterator>& a, const iterator_range<string::iterator>& b) { cout << "calling integer_compare " << endl; // expect to print out "", "1", "1", "2" for a string of "/1/1/2" for (string::iterator sitr = a.begin(); sitr != a.end(); sitr++) { cout << copy_range<std::string>(*sitr) << endl; } return true; } But I get the following error saying I cant' instantiate 'boost::range_const_iterator<char>'. Any more help is appreciated. g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"stringCompare.d" -MT"stringCompare.d" -o"stringCompare.o" "../stringCompare.cpp" ../stringCompare.cpp:58:2: warning: no newline at end of file /usr/include/boost/range/const_iterator.hpp: In instantiation of 'boost::range_const_iterator<char>': /usr/include/boost/range/iterator_range.hpp:576: instantiated from 'SeqT boost::copy_range(const Range&) [with SeqT = std::basic_string<char, std::char_traits<char>, std::allocator<char>
, Range = char]' ../stringCompare.cpp:28: instantiated from here /usr/include/boost/range/const_iterator.hpp:36: error: 'char' is not a class, struct, or union type /usr/include/boost/range/iterator.hpp: In instantiation of 'boost::range_iterator<char>': /usr/include/boost/range/iterator_range.hpp:576: instantiated from 'SeqT boost::copy_range(const Range&) [with SeqT = std::basic_string<char, std::char_traits<char>, std::allocator<char> , Range = char]' ../stringCompare.cpp:28: instantiated from here /usr/include/boost/range/iterator.hpp:37: error: 'char' is not a class, struct, or union type /usr/include/boost/range/iterator_range.hpp: In function 'SeqT boost::copy_range(const Range&) [with SeqT = std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Range = char]': ../stringCompare.cpp:28: instantiated from here /usr/include/boost/range/iterator_range.hpp:576: error: no matching function for call to 'begin(const char&)' /usr/include/boost/range/iterator_range.hpp:576: error: no matching function for call to 'end(const char&)' make: *** [stringCompare.o] Error 1 make: Target `all' not remade because of errors.
Regards, Pavol. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users