[R] How to comment in R

[baptiste auguie]

A somewhat twisted approach that has not been mentioned is to consider  
everything a comment unless it is enclosed in special tags, as done in  
the brew package,

for example,


>  brew(textConnection(
> "You won't see this R output, but it will run. <% foo <- 'bar' %>
>  Now foo is <%=foo%> and today is <%=format(Sys.time(),'%B %d, %Y') 
> %>."
>  ) )

gives,

> You won't see this R output, but it will run.
> Now foo is bar and today is February 11, 2009.


I'd love to see an editor with a "brew" mode that acts as a notebook:  
you type in your text in whatever language without worrying about the  
syntax (R syntax, i mean!), and when you want to do a calculation you  
just enclose it in such tags that behave like an inverted block comment.

Just a thought,

baptiste

On 11 Feb 2009, at 12:17, Gabor Grothendieck wrote:

> I think you need to revisit the suggestion of how to use Tinn-R
> to ensure you are doing it properly.  If its R code then if(FALSE)
> has already been mentioned as an alternative and another possibility
> is just enclose it in double quotes (or if there are double quotes in
> the passage then in single quotes):
>
> f <- function(x) {
>   " here
>   are some comments of
>   mine"
>   x+1
> }
>
> On Wed, Feb 11, 2009 at 3:32 AM,  <Mihai.Mirauta at bafin.de> wrote:
>>
>> Hi everybody,
>>
>> I use for the moment "#" at the begining of each line for comments.
>>
>> Is there any possibility to comment more than one line, like  
>> something which shows the beggingng and the end of the comment? Or  
>> is there a possibility to comment only a part of a line?
>>
>> Thanks,
>>
>> Mihai
>>
>>
>>       [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

_____________________________

Baptiste Auguié

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK

Phone: +44 1392 264187

http://newton.ex.ac.uk/research/emag