Struct field access. Damn, I coded for like 30 minutes and then it just worked on the first try

order2.kl

@@ -4,6 +4,14 @@ arena_pointer: *Arena = null
 thing: Arena
 no_type := thing
 
+arena := Arena(
+  next = null,
+  data = null,
+  len = 1000,
+  cap = 1000,
+  // constant_inside = 10,
+)
+
 Arena :: struct
   // arena: Arena
   next: *Arena
@@ -11,8 +19,12 @@ Arena :: struct
   len : int
   cap : int
 
-  get_len :: (s: *Arena): int
-    return s.len
+  constant_inside :: 10000
+constant_outside :: 10000
+
+get_len :: (s: *Arena): int
+  return s.next.len
+
 
 string16: Str16
 
@@ -24,10 +36,4 @@ with_type: Arena = thing
 pointer := &with_type
 deref := *pointer
 
-arena := Arena(
-  next = null,
-  data = null,
-  len = 1000,
-  cap = 1000,
-)