#' Sum of two args
#'
#' @param a
#' @param b
#'
#' @return
#' @export
#'
#' @examples
summa <- function(a, b) {
a + b
}
#' Function taking difference
#'
#' @param a first arg
#' @param b second arg
#'
#' @return Difference between arg1 and arg2
#' @export
#'
#' @examples
#' raz(2, 1)
#' raz(1, -1)
raz <- function(a, b) {
a - b
}
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