-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 02/16/2011 03:24 PM, Hadley Wickham wrote: >> You can replace the previous line by: >> >> browser(expr=(a!=old.a) >> >> see ?browser for details. > > I don't understand why you'd want to do that - using if is much more > readable to me (and is much more general!)
True - and I probably would use that one as well - but there is the syntax which is like a "conditional breakpoint" - so I just pointed it out. Cheers, Rainer > > Hadley > - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Tel: +33 - (0)9 53 10 27 44 Cell: +27 - (0)8 39 47 90 42 Fax (SA): +27 - (0)8 65 16 27 82 Fax (D) : +49 - (0)3 21 21 25 22 44 Fax (FR): +33 - (0)9 58 10 27 44 email: rai...@krugs.de Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk1b3o0ACgkQoYgNqgF2egriOQCdHzuptDK+N/OPrzE7wBI9Omjs fVgAn20cjAGGPZ+qz70cmjoGqhCixUj0 =hU1/ -----END 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.
