RosettaCodeData/Task/Optional-parameters/Sidef/optional-parameters-2.sidef

class String {
    method my_sort(arg) {
           (self.len <=> arg.len) ->
        || (self.lc <=> arg.lc)   ->
        || (self <=> arg)
    }
}

say table_sort(table, column: 1, ordering: 'my_sort');