Fixes #413, Fixes #371

Author: cnuernber

src/tech/v3/dataset/impl/dataset.clj

@@ -266,7 +266,9 @@
            ;;select may be slower if we have to recalculate missing values.
            (lznc/map #(ds-proto/select-rows % rowidxs))
            (new-dataset (ds-proto/dataset-name dataset)
-                        (dissoc metadata :print-index-range)))))
+                        (if-not (identical? :all (get metadata :print-index-range))
+                          (dissoc metadata :print-index-range)
+                          metadata)))))
 
 
   ds-proto/PSelectColumns

test/tech/v3/dataset_test.clj

@@ -1761,6 +1761,12 @@
                           :y (repeatedly 5 #(java.time.Instant/now))})]
     (is (= 3 (count (into [] (take 3) (:y ds)))))))
 
+
+(deftest issue-432-issue-371
+  (let [sds (ds/print-all (ds/->dataset {:x (repeatedly 50 rand)}))]
+    (is (= :all (:print-index-range (meta (ds/sort-by-column sds :x)))))
+    (is (= :all (:print-index-range (meta (ds/filter-column sds :x pos?)))))))
+
 (comment
   (require '[criterium.core :as crit])
   (def data (vec (repeatedly 100000 (fn [] {:a (rand-int 20) :b (rand) :c (rand)}))))