Dear R-Help, I asked this question on StackOverflow,
http://stackoverflow.com/questions/41083293/in-r-how-do-i-define-a-function-which-is-equivalent-to-deparsesubstitutex but thought perhaps R-help would be more appropriate. I want to write a function in R which grabs the name of a variable from the context of its caller's caller. I think the problem I have is best understood by asking how to compose `deparse` and `substitute`. You can see that a naive composition does not work: # a compose operator > `%c%` = function(x,y)function(...)x(y(...)) # a naive attempt to combine deparse and substitute > desub = deparse %c% substitute > f=function(foo) { message(desub(foo)) } > f(log) foo # this is how it is supposed to work > g=function(foo) { message(deparse(substitute(foo))) } > g(log) log Is there a way I can define a function `desub` so that `desub(x)` has the same value as `deparse(substitute(x))` in every context? Thank you, Frederick Eaton ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
