Re: [Rd] CRAN policies

From: Matthew Dowle <>
Date: Thu, 29 Mar 2012 17:40:34 +0000

William Dunlap <wdunlap <at>> writes:

> > -----Original Message-----
> > The survival package has a similar special case: the routines for
> > expected population survival are set up to accept multiple types of date
> > format so have lines like
> > if (class(x) == 'chron') { y <- as.numeric(x - chron("01/01/1960")}
> > This leaves me with two extraneous "no visible binding" messages.
> Suppose we defined a function like
> and added an entry to the stuff in codetools so that it
> would not check for misspelled object names in call to
> NO_VISIBLE_BINDING. Then Terry could write that line as
> if (class(x) == "chron") { y <- as.numeric(x - NO_VISIBLE_BINDING(chron)
> and the Notes would disappear.

That's ok for package code, but what about test suites? Say there was a test on the result of "with(DF,a+b)", you wouldn't want to change the test to "with (DF,NO_VISIBLE_BINDING(a)+NO_VISIBLE_BINDING(b))" not just because that's long and onerous, but because that's *changing* the test i.e. introducing a difference between what's tested and what user code will do.

As others suggested, how about a new category: MEMO. The "no visible binding" NOTE would be downgraded to MEMO. CRAN maintainers could then ignore MEMOs more easily.

What I really like about NOTES is that when new checks are added to R then as a package maintainer you know you don't have to fix them straight away. If a new WARNING shows up on r-devel daily checks, however, then you've got some warning about the WARNING that you need to fix more urgently and may even accelerate a release. So it's not just about checks when submitting a package, but what happens afterwards as R itself (and packages in Depends) move on. In other words, you know you need to fix new NOTES but not as urgently as new WARNINGS.

Matthew mailing list Received on Thu 29 Mar 2012 - 17:43:28 GMT

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