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Published in:
1982 | OriginalPaper | Chapter
Set types
Author : Professor Dr. Niklaus Wirth
Published in: Programming in Modula-2
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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Every data type defines a set of values. In the case of a set type S, this set of values is the set of all possible sets consisting of elements from a given base type B. For example, if the base type B is the subrange $$ B = [0 .. 1] $$ and the set type S is declared as $$ S = SET OF B $$ then the values of type S are the sets {}, {0}, {1}, {0,1}. If the base type has n distinct values, then its set type has 2 to the power of n values.{} denotes the empty set.