GetOrAdd(TKey, TValue) | Adds a key/value pair to the ThreadSafeDictionaryTKey, TValue if the key does not already exist, and returns either the added or the existing value. |
GetOrAdd(TKey, FuncTKey, TValue) | Adds a key/value pair to the ThreadSafeDictionaryTKey, TValue by using the specified addValueFactory if the key does not already exist, and returns either the added or the existing value. |
GetOrAddTArg(TKey, FuncTKey, TArg, TValue, TArg) | Adds a key/value pair to the ThreadSafeDictionaryTKey, TValue by using the specified addValueFactory if the key does not already exist, and returns either the added or the existing value. |