YAPC::EU 2018 Glasgow Update!

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

@@ -1,35 +1,28 @@
 import extensions.
 
-extension mathOp
-{
-    fib
-    [
-        if (self < 0)
-            [ InvalidArgumentException new:"Must be non negative"; raise ].
+fib(n)
+[
+    if (n < 0)
+        [ InvalidArgumentException new:"Must be non negative"; raise ].
 
-        ^ target evalSelf(:n)
-                [
-                    if (n > 1)
-                        [ ^ @self(n - 2) + @self(n - 1) ];
-                        [ ^ n ]
-                ].
-    ]
-}
+    ^ (:n)
+        [
+            if (n > 1)
+                [ ^ @self(n - 2) + @self(n - 1) ];[ ^ n ]
+        ](n)
+]
 
-public program =
+public program
 [
     -1 to:10 do(:i)
     [
-        console print("fib(",i,")=").
-
-        try (console printLine(i fib))
+        try (console printLine("fib(",i,")=",fib(i)))
         {
             on(Exception e)
             [
                 console printLine:"invalid"
             ]
-        }.
+        }
     ].
-
-    console readChar.
-].
+    console readChar
+]

Task/Anonymous-recursion/Ring/anonymous-recursion.ring

@@ -1,7 +1,4 @@
 # Project : Anonymous recursion
-# Date    : 2018/01/03
-# Author : Gal Zsolt (~ CalmoSoft ~)
-# Email   : <calmosoft@gmail.com>
 
 t=0
 for x = -2 to 12