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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

Clearing part of a string – clear and trim

Let's say we want to delete all contents after "American" in the string s: "American politics". We can apply clear , to skip all characters before "politics", making the phrase clear skip s 8 Or we can let Red do the work with find, making the phrase clear find s " politics". In both cases, s becomes "American".

If you just want to remove spaces from a string, use trim. This method is very versatile, and can include a lot of refinements:

str: " No more war ! "trim/head str       ;== "No more war ! "trim/tail str       ;== "No more war !"; trim str          ; same as both /head and /tailtrim/all str        ;== "Nomorewar!" ; removes all spacestrim/with str "!"   ;== "Nomorewar"   ; removes a specific string

The trim word is very ...

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Publisher Resources

ISBN: 9781789130706Supplemental Content