Data update

Task/Associative-array-Iteration/TAV/associative-array-iteration.tav

@@ -0,0 +1,24 @@
+main(params):+
+  mm =: 'a' -> 1, 'b' -> 2, 'c' -> 3
+  mm =: tuple mm as map
+  \ iterate over the pairs, order undefined
+  ?# t =: map mm give pairs
+    print t.1 _ '->' _ t.2 _ ' ' nonl
+  print ''
+  \ iterate over the keys
+  ?# k =: map mm give keys
+    print k, ' '  nonl
+  print ''
+  x =: mm{'c'}     \ changes order by access
+  \ iterate over the values only
+  ?# v =: map mm give values
+    print v, ' ' nonl
+  print ''
+  \ ordered keys:
+  ?# k =: map mm give keys ascending
+    print k, ' ' nonl
+  print ''
+  \ ordered keys:
+  ?# k =: map mm give keys descending
+    print k _ '->' _ mm{k} _ ' ' nonl
+  print ''