On Wed, May 4, 2011 at 8:07 AM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > On 04/05/2011 8:38 AM, Hadley Wickham wrote: >> >> Hi all, >> >> Is there any way to capture the complete unevaluated expression >> corresponding to a function? I want the equivalent of >> >> x<- quote(function(x) x = 3) >> >> But captured after the function is created. Body and formals each >> captures a part, but is there a built in way to get the whole thing? > > Internally, "function" is a function that produces a closure object. After > you call it and the function is created, the inputs are gone, all you have > is the result. But you can reconstruct it as you did below, because > "function" basically just glues the parts together (and adds an environment > as well).
Ok, I was getting confused because it looks like deparse and print(f, useSource = F) can print the whole thing. But looking at the source, I see that they reconstruct the function from the formals and the body too. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
