>>>>> Adrian Dusa
>>>>> on Tue, 25 Jun 2024 10:56:07 +0300 writes:
> Dear R fellows,
>> From time to time, just when I thought I knew my R, I get
>> bitten by some
> small things that reminds one to constantly return to the
> basics.
> I knew for instance that "-1" < 0 is TRUE, presumably
> because R first coerces to numeric before comparing with
> 0.
> But I did not expect that "--" < 0 is a TRUE statement.
> (and the same holds for any string prepended by a minus
> sign, e.g. "-a" < 0)
> I would be grateful for an explanation, I'm sure that
> something very obvious escapes me but it sure does seem
> counter intuitive to me.
> Best wishes, Adrian
> [[alternative HTML version deleted]]
Nice, quiz, yes.
You must have forgotten that all Op's (+,-, <= , &, | ..)
must coerce to common type.
... and so does c() where coercion is defined a bit more.
--> does c("--", 0) give you a clue, now ?
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