public TValue AddOrUpdate(TKey key, MyFunc <TKey, TValue> addValueFactory, MyFunc <TKey, TValue, TValue> updateValueFactory)
{
CheckKey(key);
if (addValueFactory == null)
{
throw new ArgumentNullException("addValueFactory");
}
if (updateValueFactory == null)
{
throw new ArgumentNullException("updateValueFactory");
}
return(internalDictionary.InsertOrUpdate(Hash(key),
key,
() => Make(key, addValueFactory(key)),
(e) => Make(key, updateValueFactory(key, e.Value))).Value);
}
