R/all_functions.R

In wjchulme/dd4d: Dummy Data for Dummies

#' Get all functions that are used in a formula  `expr`.
#'
#' @param expr a formula object
#'
#' @return
#' @export
#'
#' @examples
#'
all_funs = function(expr){
  all.names(expr, unique=TRUE)[!(all.names(expr, unique=TRUE) %in% all.vars(expr))]
}