Just another update

Task/Y-combinator/Objective-C/y-combinator-1.m

@@ -4,33 +4,32 @@ typedef int (^Func)(int);
 typedef Func (^FuncFunc)(Func);
 typedef Func (^RecursiveFunc)(id); // hide recursive typing behind dynamic typing
 
-Func fix (FuncFunc f) {
+Func Y(FuncFunc f) {
   RecursiveFunc r =
-    ^(id y) {
-      RecursiveFunc w = y; // cast value back into desired type
-      return f(^(int x) {
-        return w(w)(x);
-      });
-    };
+  ^(id y) {
+    RecursiveFunc w = y; // cast value back into desired type
+    return f(^(int x) {
+      return w(w)(x);
+    });
+  };
   return r(r);
 }
 
 int main (int argc, const char *argv[]) {
   @autoreleasepool {
 
-    FuncFunc almost_fac = ^Func(Func f) {
-      return ^(int n) {
-        if (n <= 1) return 1;
-        return n * f(n - 1);
-      };
-    };
-
-    FuncFunc almost_fib = ^Func(Func f) {
+    Func fib = Y(^Func(Func f) {
       return ^(int n) {
         if (n <= 2) return 1;
         return  f(n - 1) + f(n - 2);
       };
-    };
+    });
+    Func fac = Y(^Func(Func f) {
+      return ^(int n) {
+        if (n <= 1) return 1;
+        return n * f(n - 1);
+      };
+    });
 
     Func fib = fix(almost_fib);
     Func fac = fix(almost_fac);

Task/Y-combinator/Objective-C/y-combinator-2.m

@@ -0,0 +1,5 @@
+Func Y(FuncFunc f) {
+  return ^(int x) {
+    return f(Y(f))(x);
+  };
+}