Skip to Content
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 source word

You can look at the Red source code of user-defined and mezzanine functions with the source word.

For example, typing source replace in the REPL shows you the source code of the replace function we encountered in the previous chapter. Here is the output of this command:

replace: func [       series [series!]       pattern       value       /all ... ]

It's only about 30 lines, but we have shown only the beginning here; type in the command in the console to see the entire output.

This also works for your own functions—for example, type source fact after you have defined fact in the REPL or in a code file, and you can see its code! You can even use source source.

You can learn a lot from viewing this code; maybe you can use portions of it for your own ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

How I Built a Personal Board of Directors With GenAI

How I Built a Personal Board of Directors With GenAI

Vipin Gupta
How to Become a Game-Changing Leader

How to Become a Game-Changing Leader

Douglas A. Ready, Alan Mulally
Why AI Demands a New Breed of Leaders

Why AI Demands a New Breed of Leaders

Faisal Hoque, Thomas Davenport, Erik Nelson

Publisher Resources

ISBN: 9781789130706Supplemental Content