Rolf Turner is right on the money about not mixing-up '=' and '<-' Though this 'gotcha' will always a threat while '<-' is the assignment operator.
The old Algol60 syntax of ':=' was less error-prone, but I guess '<-' is too firmly bedded-in to ever change. Meanwhile, spaces around the assignment operator gives less error-prone and more readable code. cheers Bob Kinley _____________________________________________ -----Original Message----- From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Rolf Turner Sent: 02 February 2015 11:58 To: Steve Taylor; r-h...@stat.math.ethz.ch Subject: Re: [R] the less-than-minus gotcha On 02/02/15 14:26, Steve Taylor wrote: > All the more reason to use = instead of <- Couldn't agree less, Steve. The "<-" should be used for assignment. The "=" sign should be reserved for handling function arguments in the "name=value" form. Doing anything else invites confusion and occasionally chaos. Lots of examples have been given in the past involving syntax of the form foo(x = y) and foo(x <- y). cheers, Rolf -- Rolf Turner Technical Editor ANZJS Department of Statistics University of Auckland Phone: +64-9-373-7599 ext. 88276 Home phone: +64-9-480-4619 ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
