Everyone has their own utility function. Mine is if the boredom of waiting for the pure R function to finish is going to out-weight the boredom of writing the C code.
Another issue is that adding C code increases the hassle of users who might want the code to run on different architectures. On 17/01/2011 17:13, Patrick Leyshock wrote:
A question, please about development of R packages: Are there any guidelines or best practices for deciding when and why to implement an operation in R, vs. implementing it in C? The "Writing R Extensions" recommends "working in interpreted R code . . . this is normally the best option." But we do write C-functions and access them in R - the question is, when/why is this justified, and when/why is it NOT justified? While I have identified helpful documents on R coding standards, I have not seen notes/discussions on when/why to implement in R, vs. when to implement in C. Thanks, Patrick On Sun, Jan 16, 2011 at 3:00 AM,<r-devel-requ...@r-project.org> wrote:Send R-devel mailing list submissions to r-devel@r-project.org To subscribe or unsubscribe via the World Wide Web, visit https://stat.ethz.ch/mailman/listinfo/r-devel or, via email, send a message with subject or body 'help' to r-devel-requ...@r-project.org You can reach the person managing the list at r-devel-ow...@r-project.org When replying, please edit your Subject line so it is more specific than "Re: Contents of R-devel digest..." Today's Topics: 1. RPostgreSQL 0.1.7 for Windows 64 causes R.2.12.1 Win64 crash (Xiaobo Gu) ---------------------------------------------------------------------- Message: 1 Date: Sat, 15 Jan 2011 10:34:55 +0800 From: Xiaobo Gu<guxiaobo1...@gmail.com> To: r-devel@r-project.org Subject: [Rd] RPostgreSQL 0.1.7 for Windows 64 causes R.2.12.1 Win64 crash Message-ID: <aanlktinvoub-z_le1gvpyswnqtsw1p6mzzlzsztoi...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Hi, I build the binary package file of RPostgreSQL 0.1.7 for Windows 2003 Server R2 64 bit SP2, the software environments are as following: R 2.12.1 for Win64 RTools212 for Win64 DBI 0.2.5 RPostgreSQL 0.1.7 Postgresql related binaries shipped with postgresql-9.0.2-1-windows_x64.exe from EnterpriseDB The package can be loaded, and driver can be created, but the dbConnect function causes the whole RGui crashes, driver<- dbDriver("PostgreSQL") con<- dbConnect(driver, dbname="demo", host="192.168.8.1", user="postgres", password="postgres", port=5432) ------------------------------ _______________________________________________ R-devel@r-project.org mailing list DIGESTED https://stat.ethz.ch/mailman/listinfo/r-devel End of R-devel Digest, Vol 95, Issue 14 ***************************************[[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
-- Patrick Burns pbu...@pburns.seanet.com twitter: @portfolioprobe http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno') ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
