Method Insert

cpp/src/arrow/util/concurrent_map.h:31–34

class ConcurrentMap {
 public:
  void Insert(const K& key, const V& value) {
    auto lock = mutex_.Lock();
    map_.insert({key, value});
  }

  template <typename ValueFunc>
  V GetOrInsert(const K& key, ValueFunc&& compute_value_func) {