On Thu, 14 Sep 2006, Duncan Murdoch wrote: > I think it's the same reason that this happens: > > > substitute(c( a = 1, b = a), list(a = quote(foo))) > c(a = 1, b = foo) > > The "a" in function(a) is the name of the arg, it's not the arg itself > (which is missing). Now a harder question to answer is why this happens: > > > substitute(function(a=a) 1, list(a=quote(foo))) > function(a = a) 1 > > I would have expected to get "function(a = foo) 1".
In Splus you do get what you expected. > substitute(function(a=a) 1, list(a=quote(foo))) function(a = foo) 1 > substitute(function(a=func(100))func(a), list(func=quote(myFunction))) function(a = myFunction(100)) myFunction(a) R's substitute does not appear to go into the 'formals' of a function definition when looking for names to replace. ---------------------------------------------------------------------------- Bill Dunlap Insightful Corporation bill at insightful dot com 360-428-8146 "All statements in this message represent the opinions of the author and do not necessarily reflect Insightful Corporation policy or position." ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
