ReadOnlyCollection<T> supports only reading operations. Why T is not marked with out keyword?
ReadOnlyCollection<T> supports only reading operations. Why T is not marked with out keyword?
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ReadOnlyCollection<T> supports only reading operations. Why T is not marked with out keyword?
It only supports reading because is a base class for a generic read-only collection.
out keyword indicates that the parameter is covariant and only interfaces and delegates can be covariant. Note that
ReadOnlyCollection<T>implementsIEnumerable<T>which is covariant.