View difference between Paste ID: pADknHYA and VB4aZX4S

-template<class Compare>
+char randChar()
-class ReverseCompare
+
     return 'a' + rand() % 26;
-    ReverseCompare(Compare comp)
+}
-        :comp(comp)
+
-    {}
+string randString(int maxLen = 20)
 {
-    template<class Value>
+    size_t len = rand() % maxLen;
-    bool operator(const Value& a, const Value& b) const
+
-    {
+    string result(len, ' ');
-        return !comp(a, b);
+    std::generate_n(result.begin(), len, randChar);
-    }
+
     return result;
-    Compare comp;
+}
-};
+// это компилится
 
 //ниже не компилится ( с ошибкой:
 /* /usr/include/c++/4.7/bits/stl_algo.h: In instantiation of ‘_OIter std::generate_n(_OIter, _Size, _Generator) [with  _OIter = __gnu_cxx::__normal_iterator<std::basic_string<char>*, std::vector<std::basic_string<char> > >; _Size = long unsigned int; _Generator = std::basic_string<char> (*)(int)]’:
 main.cpp:63:50:   required from here
 /usr/include/c++/4.7/bits/stl_algo.h:5113:2: error: too few arguments to function */
 
 vector<string> genRandomStrings(int maxSize)
 {
     size_t n = rand() % maxSize;
 
     vector<string> result(n, "");
     std::generate_n(result.begin(), n, randString);
     //result[0] = randString();
 
     return result;
 }