logical, should the names of functions involved in
expr be returned.
max.vars
maximum number of names to be returned.
unique
if
TRUE, return a name only once, even if it is used
several times in
expr.
Otherwise, the name is included in the value as many times as it
appears in
expr.
VALUE:
character vector containing the variables in
expr.
By default, this is the list of unique names occurring in the expression,
but not including those names only appearing as the name of a function
called from the expression.
SEE ALSO:
.
EXAMPLES:
# How to get all the functions called from f
all.called <- function(f) {
all <- all.names(f, unique = T)
all[is.na(match(all, all.vars(f)))]
}