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Task/Flatten-a-list/Sidef/flatten-a-list.sidef

@@ -0,0 +1,11 @@
+func flatten(a) {
+    var flat = [];
+    a.each { |item|
+        flat += (item.is_an(Array) ? flatten(item) : [item]);
+    };
+    return flat;
+}
+
+var arr = [[1], 2, [[3,4], 5], [[[]]], [[[6]]], 7, 8, []];
+say flatten(arr).dump;      # used-defined function
+say arr.flatten.dump;       # built-in method for Array obj