| 88 | // present. |
| 89 | template <class Collection, class Key, class Value> |
| 90 | void InsertOrDie(Collection* const collection, Key&& key, Value&& value) { |
| 91 | auto p = collection->insert( |
| 92 | std::make_pair(std::forward<Key>(key), std::forward<Value>(value))); |
| 93 | CHECK(p.second) << "duplicate key: " << key; |
| 94 | } |
| 95 | |
| 96 | // Returns true if and only if the given collection contains the given key. |
| 97 | template <class Collection, class Key> |