It't not clear to me exactly what you want and how you envision it could be done, but it probably helps to realize that functions in R (and S in general) are first class objects, so you can manipulate them pretty much like any other objects. You can "compute" them "on-the-fly", e.g., by having a fuction returning a function (or a list of functions). I find reading the Language Definition manual very helpful for things like this.
As an example, the ecdf() function returns a function that can compute the estimated ecdf for any input. There may be simpler examples elsewhere. Andy > From: Hu Chen > > hi R folks, > I need read a file from hardisk or www web. Then I need to define some > new functions according to the contents of the read file. > For example, i need write a package name "mypackage" like this: > >library(mypackage) > >read(some_file_on_web) #to see its content, suppose it contains: > eat.drink.sleep > then 3 new functions need to be created and usable. > the problem is, how could I create functions after executing > ">library(mypackage)" and make these new functions visible and usable > immediately? > > Any information are appreciated. forgive me if this question is very > stupid. but I really need help. > Thank you all. > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
