[Rd] how to use debug.mypkg

[Benilton Carvalho]

Great tip Seth...

thanks a bunch...

b

On Mar 22, 2007, at 9:54 PM, Seth Falcon wrote:

> Benilton Carvalho <bcarvalh at jhsph.edu> writes:
>
>> it doesn't matter where..
>>
>> just pick one of your files and set it...
>>
>> of course, your file should be listed in the Collate field (in case
>> you changed your mind and are now using it).
>
> One useful trick is to create an environment object in your package's
> namespace.  It is probably best to put this early in the Collate order
> so all your code can assume it is there:
>
>    OPTIONS <- new.env(hash=TRUE, parent=emptyenv())
>
> Then you could have, for example, a debug flag that gets a default
> value of FALSE, but can be interactively toggled.  In your package
> code you would have:
>
>    OPTIONS$debug <- FALSE
>
> Then you could either export this object from your namespace or, more
> conservatively, export a function to toggle.  Then an end user (or
> developer) can do:
>
>   R> toggleDebug()
>
> Obviously, for this to be useful, you need to have package code that
> checks if(OPTIONS$debug) and does something different.
>
> + seth
>
> --  
> Seth Falcon | Computational Biology | Fred Hutchinson Cancer  
> Research Center
> http://bioconductor.org
>
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