References

closely related to closures since they too can be nested in methods and classes. Their translation scheme follows the scheme described for closures. They are crucial for implementing iterators efficiently. Iterators are quite valuable as they permit encapsu-lation of iteration strategies within containers. In other words, the iteration algorithm, complete with its initialization code and termination condition, is hidden within the container data structure. This makes client code simpler and more robust. A translator implementing our extensions is available a