[Rd] Historical NA question

peter dalgaard pdalgd at gmail.com
Tue May 6 07:35:01 CEST 2014

On 06 May 2014, at 01:05 , Hervé Pagès <hpages at fhcrc.org> wrote:

> BTW, that %in% has precedence over arithmetic operations is surprising,
> error-prone, and doesn't cover any reasonable use case (who needs to
> multiply the logical vector returned by %in% by some value?) but that's
> another story:

The point here is that the %foo% operators all have the _same_ precedence. In principle, they can be user-coded, and there is no way to express what precedence is desirable. It may turn out slightly weird for %in%, but think of what would happen if %*% had lower precedence than addition. 

Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com

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