Nothing
#' Extracts the row id number from the id string to delete individual rows
#'
#' @param idstr the id string formated as id_INDEX
#' @return INDEX from the id string id_INDEX
#' @keywords internal
#'
parseRowNumber <- function (idstr) {
res <- as.integer (
sub (
pattern =".*_([0-9]+)",
replacement = "\\1",
x = idstr))
if (! is.na (res))
res
}
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