[フレーム]

R Comments

Comments

Comments can be used to explain R code, and to make it more readable. It can also be used to prevent execution when testing alternative code.

Comments starts with a #. When executing code, R will ignore anything that starts with #.

This example uses a comment before a line of code:

Example

# This is a comment
"Hello World!"
Try it Yourself »

This example uses a comment at the end of a line of code:

Example

"Hello World!" # This is a comment
Try it Yourself »

Comments does not have to be text to explain the code, it can also be used to prevent R from executing the code:

Example

# "Good morning!"
"Good night!"
Try it Yourself »

Multiline Comments

Unlike other programming languages, such as Java, there are no syntax in R for multiline comments. However, we can just insert a # for each line to create multiline comments:

Example

# This is a comment
# written in
# more than just one line
"Hello World!"
Try it Yourself »

New

W3Schools Adventure App

Coding fundamentals as a game. Bite-sized lessons and challenges.

Ready to start your journey? Your streak is waiting.
+60 XP
W3Schools Adventure tutor
W3Schools Adventure map
×

Contact Sales

If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
sales@w3schools.com

Report Error

If you want to report an error, or if you want to make a suggestion, send us an e-mail:
help@w3schools.com

FORUM ABOUT ACADEMY
W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness
of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookies and privacy policy.

Copyright 1999-2026 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.

AltStyle によって変換されたページ (->オリジナル) /