Can you help me identify which iterator is being used here?

Question

Can you help me identify which iterator is being used here? (Trivial, input, output)

        int maxIndx = -1;
        int maxSize = -1;
        for (map<int, set<string> >::iterator itr = partitions.begin(); itr != partitions.end(); ++itr) {
            int size = (*itr).second.size();
            if (size > maxSize) {
                maxSize = size;
                maxIndx = (*itr).first;
            }
        }

Side note: I recommend using `iter->second.size()` and `iter->first` rather than the dereference and dot notation. It's easier to read. — Fred Larson, Oct 29 '20 at 16:33
With problems like this, a good way to solution is to read the documentation. — eerorika, Oct 29 '20 at 16:44

score 1 · Answer 1 · answered Oct 29 '20 at 16:33

1

std::map is documented as having an iterator typedef that is a LegacyBidirectionalIterator.

(cppreference is not official, but it's free, easy, and pretty darn accurate)

answered Oct 29 '20 at 16:33

Mooing Duck

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Just out of curiosity, why are these iterators 'Legacy'? – Paul Sanders Oct 29 '20 at 16:54
You probably have a question worthy of a question, @PaulSanders. In my world the legacy code is usually the code that worked. – user4581301 Oct 29 '20 at 17:09
2

@PaulSanders [this](https://stackoverflow.com/a/53970846/5522303) seems to answer that question – Kevin Oct 29 '20 at 17:35
@Kevin Sure does, thank you. – Paul Sanders Oct 29 '20 at 18:07

Can you help me identify which iterator is being used here?

1 Answers1