Nothing
#' Warn about a problem in `varname`, if `x` has no natural order
#'
#' Also warns, if R does not have a comparison operator for `x`.
#'
#' @param x [vector] of data
#' @param varname [character] len=1. Variable name for warning messages
#'
#' @return invisible(NULL)
util_warn_unordered <- function(x, varname) {
if (missing(varname)) varname <- as.character(substitute(x))
if (sum(dim(x) != 1) > 1) {
util_error(
"util_warn_unordered only works on effectively one-dimensional input")
}
warn <- FALSE
if (is.factor(x)) {
if (!is.ordered(x)) {
warn <- TRUE
}
} else if (!is.numeric(x)) {
if (!identical(prep_dq_data_type_of(x),
tolower(DATA_TYPES$DATETIME))) {
warn <- TRUE
}
}
if (warn) {
util_warning(
c(
"Don't know, how to compare values of %s (%s) -- comparisons",
"may still be possbile, but they could be meaningless."
),
dQuote(varname),
paste0(sQuote(unique(c(class(x), typeof(x)))), collapse = ", "),
applicability_problem = TRUE,
intrinsic_applicability_problem = TRUE
)
}
invisible(NULL)
}
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