Nothing
#' Description array size and type
#'
#' @param x Matrix or vector
#'
#' @return Description as character vector
#' @export
dim_and_class <- function(x) {
if (is.vector(x))
paste0(length(x), " [", class(x)[1], "]")
else
# is a matrix
paste0(nrow(x), " x ", ncol(x), " [", class(x)[1], "]")
}
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