Another update from ingydotnet^djgoku

Task/Anonymous-recursion/Elena/anonymous-recursion.elena

@@ -1,18 +1,19 @@
 #define system.
+#define extensions.
 
 #symbol fibo = (:n)
 [
-    n < 0
-        ? [ #throw InvalidArgumentException new:"Must be non negative". ].
+    (n < 0)
+        ? [ #throw InvalidArgumentException new &message:"Must be non negative". ].
 
     ^ { eval:n [ ^ (n > 1) ? [ ($self:(n - 2)) + ($self:(n - 1)) ] ! [ n ]. ] }:n.
 ].
 
 #symbol program =
 [
-    control forrange &int:-1 &int:10 &do: (&int:i)
+    -1 to:10 &doEach: (:i)
     [
-        console << "fib(" << i << ")=".
+        console writeLiteral:"fib(":i:")=".
 
         console writeLine:(fibo:i) | if &InvalidArgumentError: e
             [