Hi Henrik, Thanks for your suggestion. I created a directory with 10 R files and tried the following and measured its time
system.time(sourceDirectory("~/fun", modifiedOnly = F)) system.time(sourceDirectory("~/fun", modifiedOnly = T)) But the second line seems to spend as much time as the first line, I thought the second line would be faster since no modification is made. Also the first line reports a warning as follows In readLines(con = fh) : incomplete final line found on "~/fun/util1.R" I don't see such a warning when I use source. Maybe the two issues are related. Please advise. thanks Jeff On Fri, January 8, 2010 7:56 pm, Henrik Bengtsson wrote: > library("R.utils"); sourceDirectory("myRFiles/", modifiedOnly=TRUE); > > See ?sourceDirectory (regardless what the Rd help say, any '...' > argument is passed to sourceTo()). > > /Henrik > > > On Fri, Jan 8, 2010 at 7:38 AM, Hao Cen <h...@andrew.cmu.edu> wrote: > >> Hi, >> >> >> I wonder what is a better way to organize a lot of R source files. I >> have a lot of utility functions written and store them in several source >> files (e.g util1.R, util2.R,..utilN.R). I also have a master file in >> which the source command is used to load all the util.R files. When I >> need to use the utility functions in a new project, I create a new R >> file (e.g main.R) in which I "source" the master file. >> >> The problem with this approach is that anytime a single utility >> function is modified, I need to rerun the source command in main.R to >> load the master file, which loads all the utility R files via a loop >> over each file. Sometimes I have to wait for 10 seconds to get them all >> loaded. Sometimes I forget to run the source command. Is there a way in >> R to 1) >> only reload the file changed (like a make utility) when I run source on >> all utility files and/or even better 2) reload the changed utility >> files, when I run a command that use one of those utility functions, >> without the need for me to source those files. >> >> Not sure if packaging solves this issue because the library command has >> be used every time a utility function is modified and in addition the >> package has to be rebuilt. I don't worry about sharing the source files >> at this moment as I am the only user of those utility files. >> >> This may be a common issue many R users face. I wonder how other R >> users solve this issue. >> >> thanks >> >> Jeff >> >> >> ______________________________________________ >> 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. >> > > ______________________________________________ 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.