using on indexable field; Auto deref for (Index|Slice)Expr

code/demo.odin

@@ -3,59 +3,17 @@
 #import "hash.odin"
 #import "mem.odin"
 
-main :: proc() {
-	{ // New Standard Library stuff
-		s := "Hello"
-		fmt.println(s,
-		            utf8.valid_string(s),
-		            hash.murmur64(s.data, s.count))
 
-		// utf8.odin
-		// hash.odin
-		//     - crc, fnv, fnva, murmur
-		// mem.odin
-		//     - Custom allocators
-		//     - Helpers
-	}
-
-	{
-		arena: mem.Arena
-		mem.init_arena_from_context(^arena, mem.megabytes(16)) // Uses default allocator
-		defer mem.free_arena(^arena)
-
-		push_allocator mem.arena_allocator(^arena) {
-			x := new(int)
-			x^ = 1337
-
-			fmt.println(x^)
-		}
-
-		/*
-			push_allocator x {
-				...
-			}
-
-			is equivalent to this:
-
-			{
-				prev_allocator := current_context().allocator
-				current_context().allocator = x
-				defer current_context().allocator = prev_allocator
-
-				...
-			}
-		*/
-
-		// You can also "push" a context
-
-		c := current_context()
-		c.allocator = mem.arena_allocator(^arena)
-
-		push_context c {
-			x := new(int)
-			x^ = 365
-
-			fmt.println(x^)
-		}
-	}
+A :: struct { using e: [12]int }
+Vector2 :: raw_union {
+	using _xy: struct #ordered { x, y: f32 }
+	using v: {2}f32
+	e: [2]f32
+}
+
+main :: proc() {
+	v: Vector2
+	v.x = 123
+	v[1] = 321
+	fmt.println(v)
 }