You can also use is.element(els,set) instead of the equivalent els%in%set and leave your precedence problems behind. Bill Dunlap TIBCO Software wdunlap tibco.com
On Mon, May 5, 2014 at 10:35 PM, peter dalgaard <[email protected]> wrote: > > On 06 May 2014, at 01:05 , Hervé Pagès <[email protected]> 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: [email protected] Priv: [email protected] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
