Cosmetic changes

examples/arrays_and_slices.kl

@@ -14,8 +14,8 @@ be nice if handling of that was simplified.
 main :: (): int
   static_array: [8]int
 
-  // We can get size of array using length_of builtin
-  #Assert(length_of(static_array) == 8)
+  // We can get size of array using Length builtin
+  #Assert(Length(static_array) == 8)
 
   // Accessing values is like in C
   // Variables are zeroed by default
@@ -39,7 +39,7 @@ main :: (): int
   slice: []int = static_array
 
   // We can't do a compile time Assert anymore
-  Assert(length_of(slice) == 8)
+  Assert(Length(slice) == 8)
   Assert(slice[4] == 1)
 
   // After we loop and reassign slice values