Question

Another small question about STL:

i have Dictionary:

map <string,vector <Wordy> > Dictionary;

using structure Wordy:

struct Wordy{ int count; string word;}

also this structure have overloaded operator<

bool operator< (Wordy& One, Wordy& Two){return One.count<Two.count;}

but this sort() function from algorithm doesn’t work!

sort(Dictionary.find(s)->second.begin(),Dictionary.find(s)->second.end());

Answer 1

Your operator< should take its parameters by reference-to-const, I think that might be it:

bool operator< (const Wordy& One, const Wordy& Two){return One.count<Two.count;}
//              ^^^^^             ^^^^^