[R] Is there a construct for conditional comment?

[Steve Jaffe]

Why not

if ( 0 ) {
commented with zero
} else {
commented with one
}


Greg Snow-2 wrote:
> 
> I believe that #if lines for C++ programs is handled by the preprocessor,
> not the compiler.  So if you want the same functionality for R programs,
> it would make sense to just preprocess the R file.
> 
>> In C++, I can use the following construct to choice either of the two
>> blocks the comment but not both. Depending on whether the number after
>> "#if" is zero or not, the commented block can be chose. I'm wondering
>> if such thing is possible in R?
>> 
>> #if 0
>> commented with 0
>> #else
>> commented with 1
>> #endif
>> 
>> Regards,
>> Peng
>> 
> 

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