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Returns an iterator for the items in the collection.
public: IIterator<T> ^ First();
public IIterator<T> First();
Public Function First () As IIterator(Of T)
When programming with .NET, this interface is hidden, and you should use the System.Collections.Generic.IEnumerable<T> method.
If changes are made to the collection, such as adding, modifying, or deleting elements, the iterator is permitted to raise an exception for all future operations.
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