Message-ID: <XFMail.050531121211.Ted.Harding@nessie.mcc.ac.uk>
Date: 2005-05-31T14:00:50Z
From: (Ted Harding)
Subject: minus: operator and sign (PR#7908)
In-Reply-To: <XFMail.050531110718.Ted.Harding@nessie.mcc.ac.uk>
On 31-May-05 Ted Harding wrote:
> [...]
> But it is always safe (and often prudent) to force precedence
> with parentheses -- at least you yourself are then absolutely
> sure of exactly what is going to happen, which is the really
> important thing (and this is Rule 2, which takes precedence
> over Rule 1).
>
> So if you want to force "-2^2" and similar to be the square
> of "-2" then do "(-2)^2". And it adds clarity to things like
>
> 2 - - - 2^2
PS: And will also avoid typopathological events such as
> x<-y
when what you really meant was
> x< -y
[1] FALSE
Ted.
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Date: 31-May-05 Time: 11:50:07
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