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To create an empty sequence one uses the following
var empty = Enumerable.Empty<string> ();
Is there an equivalent for creating an empty dictionary as easily as this?
No there is no equivalent…
The purpose of
Enumerable.Empty<T>()is to return a “cached” instance of an empty array. So you can avoid the overhead of creating a new array (return new T[0];).You cannot translate this to a non-readonly structure like a
IDictionary<TKey, TValue>orDictionary<TKey, TValue>since the returned instance might be modified later and would therefore invalidate the purpose…