Related to the length of 'ifelse' result, I want to say that "example of
different return modes" in ?ifelse led me to perceive a wrong thing in the past.
## example of different return modes:
yes <- 1:3
no <- pi^(0:3)
typeof(ifelse(NA, yes, no)) # logical
typeof(ifelse(TRUE, yes, no)) # integer
typeof(ifelse(FALSE, yes, no)) # double
As the result of each 'ifelse' call is not printed, I thought that the length
of the result is 3. In fact, the length of the result is 1.
I realize just now that the length of 'no' is different from 'yes'. The length
of 'yes' is 3, the length of 'no' is 4.
--------------------------------------------
Subject: Re: ifelse() woes ... can we agree on a ifelse2() ?
To: r-de...@lists.r-project.org
Date: Sunday, 27 November, 2016, 8:50 AM
In all of the proposed 'ifelse'-like functions so far, including from me (that
I labeled as 'ifelse2', following Martin Maechler) and from Martin Maechler,
the length of the result equals the length of 'test', like in 'ifelse'. There
is no recycling of 'test'.
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