search for: predesigned

Dear all, I want to let R automatically download available files from a website in certain folders. Since the files I need, if exist, are in a certain directory, I used download.file() function with a predesigned directory. However, some of the folders do not have the file I want. When this occurs, my program returns error and terminates. So I wonder if there is any way that I can check if a directory exists before downloading that file. I appreciate your help! Thanks! Wendy [[alternative HTML version...

On Fri, Nov 8, 2013 at 8:44 AM, Filip Pizlo <fpizlo at apple.com> wrote: > Is the expectation that to utilize this metadata an optimization pass > would have to inspect the body of @f and reason about its behavior given > <args>? > > > Yes. > > > If so, then I think this is pretty bad. If we ever want to parallelize > function passes, then they can't

On Nov 8, 2013, at 9:36 PM, Chandler Carruth <chandlerc at google.com> wrote: > > On Fri, Nov 8, 2013 at 8:44 AM, Filip Pizlo <fpizlo at apple.com> wrote: >> Is the expectation that to utilize this metadata an optimization pass would have to inspect the body of @f and reason about its behavior given <args>? > > Yes. > >> >> If so, then I

...ds. " BUT BEFORE I launch into this. Is there a way that either the Warnes package (Genetics) or the David Clayton package can handle the data in the long form? If not do any of the packages reshape the data in a way that is pedigree and genotype aware. The general R reshape function is not predesigned to be friendly to genetic data. Farrel Buchinsky, MD --- Mobile (412) 779-1073 Pediatric Otolaryngologist Allegheny General Hospital Pittsburgh, PA ********************************************************************** This email and any files transmitted with it are confidentia...{{dropped}}

> On Nov 8, 2013, at 1:13 AM, Chandler Carruth <chandlerc at google.com> wrote: > > >> On Thu, Nov 7, 2013 at 9:39 PM, Filip Pizlo <fpizlo at apple.com> wrote: >> NEW PROPOSAL >> >> The solution is to introduce meta-data that is explicit about how the safe-to-execute condition ought to be evaluated. Instead of an SSA use, we can have meta-data that