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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

Working with fields and functions

Accessing a variable or a function within an object is done using the / (path) notation, which we already encountered as the way to access the elements of a series by index, or using the file-path notation:

square1/length    ;== 10square1/display   ; Length of square1 is 10

This works the same as the . (dot) notation using the square1.length and square1.display() classes in other languages.

In the same way, you can change data in the object:

square1/length: 5   ;== 5square1/length      ;== 5

Another way to do this uses get in or set in to access a field using the literal ' word notation:

get in square1 'length      ;== 10set in square1 'length 5    ;== 5

The set word can also be used to initialize all fields to none, or to ...

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Publisher Resources

ISBN: 9781789130706Supplemental Content