Nothing
# ----------------------------------------------------------
# is.valid
# ==========================================================
#' @title validate an object
#' @description a function to make sure the value is not NULL,
#' NA, NaN, or Inf
#' @return locical. if TRUE, the object is valid
#' @author E. F. Haghish
#' @keywords Internal
#' @noRd
is.valid = function(x) {
if (!is.null(x)) {
if (is.na(x)) {
return(FALSE)
}
else if (is.infinite(x)) {
return(FALSE)
}
else {
return(TRUE)
}
}
else {
return(FALSE)
}
}
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