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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

The vector! datatype

When your series contains values of one of the integer!,float!char!, or percent! types and only one of these, and you need fast mathematical operations, then you want to use the vector! type, like this:

;-- see Chapter10/perf-datatypes.red:v1: make vector! [7 13 42 108]vector? v1       ;== true

In a vector!, all values need to be of the same type. You can perform simple arithmetic with vectors like so:

v1 + 2       ;== make vector! [9 15 44 110]print v1     ;== 9 15 44 110v1 * 4       ;== make vector! [36 60 176 440]v2: make vector! [1 2 3 4]v1 + v2      ;== make vector! [37 62 179 444]

Note that the operations on one vector change it in place, that means the vector v1 in our examples is changed by the operations. Most actions that we know ...

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Publisher Resources

ISBN: 9781789130706Supplemental Content