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Learn Red ? Fundamentals of Red
book

Learn Red ? Fundamentals of Red

by Ivo Balbaert
May 2018
Beginner content levelBeginner
252 pages
6h 19m
English
Packt Publishing
Content preview from Learn Red ? Fundamentals of Red

Series as sets

Red has some basic operations to use so that it can work with series as sets. For example, say we have two sets, s1 and s2, containing s1: [7 13 42 108] and s2: [2 7 14 42 109] (the code can be found in Chapter05/sets.red):

  • union s1 s2 returns [7 13 42 108 2 14 109]: the series are joined together, and duplicates are eliminated
  • intersect s1 s2   returns [7 42]: only the common elements are retained
  • difference s1 s2 return[13 108 2 14 109]: only the elements that are not common to both are retained
  • exclude s1 s2 returns [13 108]: all elements from the second set are removed from the first set
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Publisher Resources

ISBN: 9781789130706Supplemental Content