prev()

template<typename Key, typename Value, typename Less = fl::less<Key>>

bool fl::flat_map< Key, Value, Less >::prev ( const Key & key, Key * prev_key, bool allow_rollover = false ) const

inline

Definition at line 468 of file flat_map.h.

                                                                                             {
        auto it = find(key);
        if (it != end()) {
            if (it != begin()) {
                --it;
                *prev_key = it->first;
                return true;
            } else if (allow_rollover && !empty()) {
                *prev_key = mData.back().first;
                return true;
            }
        }
        return false;
    }