Colour me confused.
if (...) { ... } else { ... }
is a control structure. It requires the test to evaluate to a single
logical value,
then it evaluates one choice completely and the other not at all.
It is special syntax.
ifelse(..., ..., ...) is not a control structure. It is not special
syntax
Dear R-help listers,
The Statistical Computing Section of the American Statistical Association
announces the competition for the John M. Chambers Statistical Software Award.
In 1998 the Association for Computing Machinery (ACM) presented the ACM
Software System Award to John Chambers for the de
Hi Avi,
Definitely a learning moment. I may consider writing an ifElse() for
my own use and sharing it if anyone wants it.
Jim
On Sun, Oct 10, 2021 at 6:36 AM Avi Gross via R-help
wrote:
>
> This is supposed to be a forum for help so general and philosophical
> discussions belong elsewhere, or n
Dear Ravi,
I have uploaded on GitHub a version which handles also constant values
instead of functions.
Regarding named arguments: this is actually handled automatically as well:
eval.by.formula((x > 5 & x %% 2) ~ (x <= 5) ~ ., FUN, y=2, x)
# [1] 1 4 9 16 25 6 14 8 18 10
eval.by.formul
This is supposed to be a forum for help so general and philosophical
discussions belong elsewhere, or nowhere.
Having said that, I want to make a brief point. Both new and experienced
people make implicit assumptions about the code they use. Often nobody looks
at how the sausage is made. The re
Dear Ravi,
I wrote a small replacement for ifelse() which avoids such unnecessary
evaluations (it bothered me a few times as well - so I decided to try a
small replacement).
### Example:
x = 1:10
FUN = list();
FUN[[1]] = function(x, y) x*y;
FUN[[2]] = function(x, y) x^2;
FUN[[3]] = function
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