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Note: null pointers mark the boundary between visited and unvisited objects; test for null; reference returns a new object

topics > all references > references c-d > QuoteRef: cbb_2000 , p. 2000-10-31



Topic:
undefined, null, and other signal values
Topic:
pointers to data

Quotation

Want null pointers. Need something to mark the boundary between visited and unvisited objects. Need to test for Null or EOF after most dereferences anyway. Even though can test for 'null', any reference returns an object of that type.   Google-1   Google-2

personal notes


Related Topics up

Topic: undefined, null, and other signal values (34 items)
Topic: pointers to data (55 items)

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