Prof Brian Ripley <rip...@stats.ox.ac.uk> writes: > On 21/02/2014 10:07, Rainer M Krug wrote: >> Hi >> >> I want to assign the function & and | to a variable, because I want to >> specify as a function argument if inside the function & or | should be >> used. >> >> link <- & >> >> does not work, and >> >> link <- "&" >> >> results in the string "&" being assigned to link. > > Use backticks: see ?Quotes. > > link <- `&` >
Thanks - that works perfectly. > You can also make use of .Primitive. > >> So how can I assign the logical function to the variable link, so that I >> can do >> >> TRUE link FALSE > > Are you trying to ask how to make 'link' into a binary operator? You > cannot: user-defined binary operators are of the form %link% . Initially I wanted, but using the form link(x, y) makes the argument more powerful as user defined functions can be supplied which return logical vectors. Thanks a lot, Rainer > > >> >> Thanks, >> >> Rainer >> >> >> >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug
pgpqDgedzi02E.pgp
Description: PGP signature
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.