Some Ideas on Data Types in High-Level Languages A number of issues are explored concerning the notion that a data type is a set of values together with a set of primitive operations on those values. Among these are the need for a notation for iterating over the elements of any finite set (instead of the more narrow for i:= 1 to n notation), the use of the domain of an array as a data type, the need for a simple notation for allowing types of parameters to be themselves parameters (but in a restrictive fashion), and resulting problems with conversion of values from one type to another. CACM June, 1977 Gries, D. Gehani, N. data types, generic procedures, programming languages 4.12 4.20 4.22 CA770607 JB December 28, 1977 1:27 PM 2167 4 2956 2723 4 2956 2941 4 2956 2956 4 2956 2956 4 2956 3030 4 2956 1379 5 2956 2651 5 2956 2956 5 2956 2956 5 2956 2956 5 2956 3049 5 2956 2956 6 2956 2958 6 2956 2957 6 2956 2960 6 2956