Method count

tensorflow/core/lib/gtl/flatmap.h:218–218

  }

  size_t count(const Key& k) const { return rep_.Find(k).found ? 1 : 0; }
  iterator find(const Key& k) {
    auto r = rep_.Find(k);
    return r.found ? iterator(r.b, rep_.limit(), r.index) : end();