This function tries to determine the name of a variable passed to a
function.
variable_name(variable, fallback = "unnamed")A character, the variable name.
[any]
Any object.
[character(1)]
A fallback name if for some reason the actual variable name
(which must be a single character) cannot be determined.
Other function helpers:
do.call_timed(),
function_arguments(),
function_body(),
function_defaults(),
quiet(),
timed(),
try_silent()
variable_name(a)
f <- function(x) variable_name(x)
f(x = a)
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