September 2017 Update

Task/Mutual-recursion/Sidef/mutual-recursion.sidef

@@ -1,9 +1,9 @@
-func F(){};
-func M(){};
-
-F = func(n) { n > 0 ? (n - M(F(n-1))) : 1 };
-M = func(n) { n > 0 ? (n - F(M(n-1))) : 0 };
-
+func F(){}
+func M(){}
+ 
+F = func(n) { n > 0 ? (n - M(F(n-1))) : 1 }
+M = func(n) { n > 0 ? (n - F(M(n-1))) : 0 }
+ 
 [F, M].each { |seq|
-    (0..19).map {|i| seq.call(i)}.join(' ').say;
+    {|i| seq.call(i)}.map(^20).join(' ').say
 }