added APL extension primitives

HISTORY.md

@@ -7,7 +7,10 @@
 * **Notable Fixes:**
     * fixed occasional invisible error messages
 
-### 2021-06-15
+### 2021-06-16
+* extensions: added APL extension primitives
+
+### 2021-06-16
 * threads: added exception handling primitives for try/catch
 * extensions: added try-catch extension primitives
 * updated try-catch library

snap.html

@@ -19,7 +19,7 @@
         <script src="src/sketch.js?version=2020-07-13"></script>
         <script src="src/video.js?version=2019-06-27"></script>
         <script src="src/maps.js?version=2021-06-15"></script>
-        <script src="src/extensions.js?version=2021-06-16"></script>
+        <script src="src/extensions.js?version=2021-06-17"></script>
         <script src="src/xml.js?version=2020-04-27"></script>
         <script src="src/store.js?version=2021-06-10"></script>
         <script src="src/locale.js?version=2021-06-11"></script>

src/extensions.js

@@ -30,7 +30,7 @@
 /*global modules, List, StageMorph, Costume, SpeechSynthesisUtterance, Sound,
 IDE_Morph, CamSnapshotDialogMorph, SoundRecorderDialogMorph, isSnapObject*/
 
-modules.extensions = '2021-June-16';
+modules.extensions = '2021-June-17';
 
 // Global stuff
 
@@ -139,6 +139,22 @@ SnapExtensions.set(
     }
 );
 
+SnapExtensions.set(
+    'dta_transpose(list)',
+    function (data, proc) {
+        proc.assertType(data, 'list');
+        return data.transpose();
+    }
+);
+
+SnapExtensions.set(
+    'dta_crossproduct(list)',
+    function (data, proc) {
+        proc.assertType(data, 'list');
+        return data.crossproduct();
+    }
+);
+
 // World map (map_):
 
 SnapExtensions.set(