AbstractWhile the control structures in recent programming languages are structured, the data structures are still primitive. This paper examines data structures and operations on them, and proposes some new features in programming languages. These new features are principally in the areas of data description and data usage. In data description, the emphasis is on a global view of dynamic data structures; in data usage, semantic relationships between data items are innate in the operations on these data structures. Finally, example data descriptions and algorithms using some of the new features are contrasted with those using conventional features.
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