Method find

src/fl/stl/flat_set.h:94–100

Lookup

    // Lookup
    iterator find(const Key& key) {
        auto it = lower_bound(key);
        if (it != end() && !mLess(key, *it) && !mLess(*it, key)) {
            return it;
        }
        return end();
    }

    const_iterator find(const Key& key) const {
        auto it = lower_bound(key);