On 06/02/2024 2:17 p.m., Hervé Pagès wrote:
Thanks. Workarounds are interesting but... what's the point of the NOTE
in the first place?
Creating a function that can't be called could be an error. Presumably
you are careful and never try to call it with the wrong signature, but
the check code isn't smart enough to follow every code path, so it gives
the note to warn you that you might have something wrong.
You still have the same issue with my workaround, but the check code
isn't smart enough to notice that.
Duncan Murdoch
H.
On 2/4/24 09:07, Duncan Murdoch wrote:
On 04/02/2024 10:55 a.m., Izmirlian, Grant (NIH/NCI) [E] via R-devel
wrote:
Well you can see that yeast is exactly weekday you have. The way out
is to just not name the result
I think something happened to your explanation...
toto <- function(mode)
{
ifelse(mode == 1,
function(a,b) a*b,
function(u, v, w) (u + v) / w)
}
It's a bad idea to use ifelse() when you really want if() ... else ...
. In this case it works, but it doesn't always. So the workaround
should be
toto <- function(mode)
{
if(mode == 1)
function(a,b) a*b
else
function(u, v, w) (u + v) / w
}
________________________________
From: Grant Izmirlian <izmirlidr...@gmail.com>
Date: Sun, Feb 4, 2024, 10:44 AM
To: "Izmirlian, Grant (NIH/NCI) [E]" <izmir...@mail.nih.gov>
Subject: Fwd: [EXTERNAL] R-devel Digest, Vol 252, Issue 2
Hi,
I just ran into this 'R CMD check' NOTE for the first time:
* checking R code for possible problems ... NOTE
toto: multiple local function definitions for �fun� with different
formal arguments
The "offending" code is something like this (simplified from the real
code):
toto <- function(mode)
{
if (mode == 1)
fun <- function(a, b) a*b
else
fun <- function(u, v, w) (u + v) / w
fun
}
Is that NOTE really intended? Hard to see why this code would be
considered "wrong".
I know it's just a NOTE but still...
I agree it's a false positive, but the issue is that you have a
function object in your function which can't be called
unconditionally. The workaround doesn't create such an object.
Recognizing that your function never tries to call fun requires global
inspection of toto(), and most of the checks are based on local
inspection.
Duncan Murdoch
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--
Hervé Pagès
Bioconductor Core Team
hpages.on.git...@gmail.com
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