Function InsertOrDie

external/sentencepiece/src/util.h:254–258

template <class Collection>
void InsertOrDie(Collection *const collection,
                 const typename Collection::value_type::first_type &key,
                 const typename Collection::value_type::second_type &data) {
  CHECK(InsertIfNotPresent(collection, key, data)) << "duplicate key";
}

// hash
inline void mix(uint64_t &a, uint64_t &b, uint64_t &c) {  // 64bit version