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FrEqDe
Asked: 2020-05-31 18:01:34 +0800 CST 2020-05-31 18:01:34 +0800 CST

How to perform multi-line comments in R?

  • 772

So far I have only been able to comment as follows:

 # Mi Comentario 1

 # Mi Comentario 2

 # Mi Comentario 3

But I would like to know something equivalent to /**/:

/*
Comentario 1
Comentario 2
Comentario 3
*/
r

5 Answers

  1. Best Answer

    Unfortunately, R does not handle multiline comments , there is a trick, which I don't know if it's very good, and that involves writing a common multiline string, which R will evaluate as such:

    " Esta es una prueba
  de un string multilínea que hace las veces
  de un comentario
"

    In this case, the string written like this is relatively innocuous: it will be seen in the console output and there will be a minimal penalty for evaluating it.

    • 4

  2. Using R Studio (or Eclipse) you can create comment blocks: Select the text and use the string

    Windows:

    Ctrl+ Shift+C

    either

    Ctrl+ ⇧+C

    Mac:

    Command+ Shift+C

    either

    ⌘+ ⇧+C

    Manually just define the blocks using "as container, example:

    "#R version 3.3.2 
print("Hello, world!")
[ + ] Show input       
We've lost 2 months of data due to series of mistakes. Sorry about that.
"
    • 2

  3. Once the text is selected Crtl+ ↑+c

    • 1

  4. What I do is write everything as if it were a notepad, and then I put all the "#" at once. There is a keyboard shortcut Ctrl+Alt+up or down arrow that extends the text cursor several lines to be able to enter the same character on several lines at once, in this case, "#".

    • 0

  5. Yes there is way to make multiline comment, using

    <!-- ejemplo
     comentario
     multilinea -->

    I hope it works for you.

    • 0