New Features in C# 2.0—Global Namespace: What about

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New Features in C# 2.0

Type-Safe List
Generic Collection
Collection Interfaces
Generic Iterators
Implement GetEnumerator
Anonymous Methods
Partial Types
Create Static Classes
Nullable Types
Global Namespace
- How do I do that?
- What just happened?
- What about…
- Where can I learn more?
Limit Properties Access
Co- and Contravariance

What about…

…other uses for the double-colon (::) operator?

The :: operator is the namespace alias qualifier. It always appears between two identifiers:

identifierOne::identifierTwo

If identifierOne is the global namespace, this operator is used to find identifierTwo within the global namespace. But if identifierOne is any namespace other than the global namespace, the operator serves to restrict the lookup of identifierOne.