getSym {refer}

Extract or Set Reference Symbol

Description

Functions to obtain or set the object name to which a ref or sref object points.

Usage

getSym(x)

setSym(x, sym)

Arguments

x

object of class "ref"

sym

symbol or character naming the object to which the reference points

Value

character of length 1

Examples

x <- 1:10
ref_to_x <- ref(x)
ref_env  <- getEnv(ref_to_x)
ref_sym  <- getSym(ref_to_x)

identical(ref_env, .GlobalEnv)
identical(ref_sym, "x")

y <- 500
ref_to_x <- setSym(ref_to_x, y)
!ref_to_x