Trouble with dependent types in templates

Question

I\'m having trouble with templates and dependent types:

namespace Utils
{
    void PrintLine(const string& line, int tabLevel = 0);
    string getTabs(in         


        

Answer 1

You need an additional typename keyword on this line:

set<result_t> findAll_if(typename set<result_t>::iterator begin,typenameset<result_t>::iterator end, Predicate pred) // warning C4346

Answer 2

Well, the warning says:

dependent name is not a type. prefix with 'typename' to indicate a type

The dependent name (that is, the iterator in std::set<result_t>::iterator) is not a type. You need to prefix it with typename to indicate a type:

typename std::set<result_t>::iterator

So, your declaration should be:

template<class result_t, class Predicate>
set<result_t> findAll_if(typename set<result_t>::iterator begin, typename set<result_t>::iterator end, Predicate pred)
                                                note added typename ^

(and the definition should match the declaration)