for(int i=0;i<(int)actors.size()-1;i++) {
for(int j=i+1;j<(int)actors.size();j++) {
}
}
typedef std::list<Actor>::iterator ActorsIterator;
for(ActorsIterator i=actors.begin();i!=actors.end();i++) { //need to iterate to second last actor
for(ActorsIterator j=actors.begin();j!=actors.end();j++) { // need to start at i's current iteration+1
}
}
typedef std::list<Actor>::iterator ActorsIterator;for (ActorsIterator i = actors.begin(); i !=actors.end(); i++) { //need to iterate to second last actor ActorsIterator j = i; ++j; for(; j != actors.end(); j++) { // need to start at i's current iteration+1 }}
ActorsIterator k = actors.end();k--;k--;for(ActorsIterator i=actors.begin();i!=k;i++) {Quote:Original post by Ezbez
I think that you missed the "// Need to iterate to second to last actor" part, SiCrane. Correct me if I'm wrong, but that could be done by doing "i != --actors.end()"
Quote:Original post by Ezbez
I think that you missed the "// Need to iterate to second to last actor" part, SiCrane. Correct me if I'm wrong, but that could be done by doing "i != --actors.last"
ActorsIterator k = actors.end();std::advance(k, -2);Quote:Original post by ToohrVyk
Actually, by decrementing k twice, you get the third last object. And it doesn't really get any shorter than a simple --k before the loop.
Ezbez: --actors.end() might well be illegal.
Quote:e.insert( --e.end(), TodaysDate() );
Error: The expression "--e.end()" is illegal.
The reason is simple, if a little obscure: vector<Date>::iterator is simply a Date*, and you're not allowed to modify temporaries of builtin type. For example, the following plain-jane code is also illegal:Date* f(); // function that returns a Date* p = --f(); // error, but could be "f() - 1"
Quote:Original post by johnnyBravo
I'm not sure I understand what the problem is, like what does that function have to do with .end() ?
for (ActorsIterator j = actors.begin(); j != actors.end(); ++j) for (ActorsIterator i = actors.begin(); i != j; ++i) // Do stuff with i, j
