Hi all,
In a function, I need to get the name of a variable that has been used to
call the function.
For example, I want:
--- 8< ------
toto <- 3
fun <- function(y){
nameOfY <-deparse(substitute(y))
cat("name is ",nameOfY)
}
fun(toto)
# [1] name is toto
--- 8< ----
But deparse(substitute(y)) does not work all the time, especially when we
use generic function.
--- 8< ----
setGeneric("fun",function(y,...){standardGeneric("fun")})
setMethod("fun","numeric",
definition = function(y,...){
nameOfY <-deparse(substitute(y))
cat("name is ",nameOfY)
}
)
toto <- 4
fun(toto)
# name is toto
setMethod("fun","character",
definition = function(y,x,...){
nameOfY <-deparse(substitute(y))
cat("name is ",nameOfY)
}
)
titi <- "aze"
fun(titi)
# name is y
--- 8< ----
So is there a way to get the name of the variable "toto" or "titi" in a way
that work in all cases?
Christophe
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