Re: [R] Block comments in R?

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Thu 05 Oct 2006 - 09:29:18 GMT

Robin Hankin wrote:
>
> On 5 Oct 2006, at 10:05, Uwe Ligges wrote:
>

>>
>>
>> Wee-Jin Goh wrote:
>>> Hello list,
>>>
>>> Is there any way to perform a block comment in R? In C++, anything in
>>> between a /* and */ is considered a comment, and it allows
>>> programmers to comment out chunks of code for testing and debugging.
>>> Is there such a feature in R?
>>
>>
>> This has frequently been asked on the list. Try to google for it. You
>> will find answers like
>>
>> if(FALSE){"
>>      code block
>>      commented
>> "}
>>
>>

>
>
> That method doesn't work for me:
>
> if(FALSE){"
>
> if(1<2)
> print("1<2")
> else
> print("1>2")
>
> "}

Use an editor that comments out a whole block which is what I do all the time, e.g. use Tinn-R, Emacs or WinEdt, to mention just a few of them.

Or you can go ahead and use

if(FALSE){

if(1<2)

   print("1<2")
else

   print("1>2")

}

or

if(FALSE){'

if(1<2)

   print("1<2")
else

   print("1>2")

'}

Uwe

>
> returns an error. How would I comment out that block of (incorrect) code?
>
>
>
>
>
>
>

>> or "use a good editor that supports commenting and uncommenting blocks".
>>
>>
>> Uwe Ligges
>>
>>

>
> --
> Robin Hankin
> Uncertainty Analyst
> National Oceanography Centre, Southampton
> European Way, Southampton SO14 3ZH, UK
> tel 023-8059-7743
>
>
>
>

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