Message-ID: <1529825091.2728209.1509797508916@mail.yahoo.com>
Date: 2017-11-04T12:11:48Z
From: Suharto Anggono Suharto Anggono
Subject: ans[nas] <- NA in 'ifelse' (was: ifelse() woes ... can we agree on a ifelse2() ?)
Removal of
ans[nas] <- NA
from the code of function 'ifelse' in R is not committed (yet). Why?
--------------------------------------------
On Mon, 28/11/16, Martin Maechler <maechler at stat.math.ethz.ch> wrote:
Subject: Re: [Rd] ifelse() woes ... can we agree on a ifelse2() ?
Cc: R-devel at r-project.org, maechler at stat.math.ethz.ch
Date: Monday, 28 November, 2016, 10:00 PM
>>>>> Suharto Anggono Suharto Anggono via R-devel <r-devel at r-project.org>
>>>>> on Sat, 26 Nov 2016 17:14:01 +0000 writes:
...
> On current 'ifelse' code in R:
> * The part
> ans[nas] <- NA
> could be omitted because NA's are already in place.
> If the part is removed, variable 'nas' is no longer used.
I agree that this seems logical. If I apply the change, R's own
full checks do not seem affected, and I may try to commit that
change and "wait and see".
...