Change vector memory layout and operations; for in vector.

src/check_stmt.c

@@ -693,22 +693,24 @@ void check_stmt_internal(Checker *c, AstNode *node, u32 flags) {
 					}
 					break;
 				case Type_Array:
-					// val = make_type_pointer(c->allocator, t->Array.elem);
 					val = t->Array.elem;
 					idx = t_int;
 					break;
 
 				case Type_DynamicArray:
-					// val = make_type_pointer(c->allocator, t->DynamicArray.elem);
 					val = t->DynamicArray.elem;
 					idx = t_int;
 					break;
 
 				case Type_Slice:
-					// val = make_type_pointer(c->allocator, t->Slice.elem);
 					val = t->Slice.elem;
 					idx = t_int;
 					break;
+
+				case Type_Vector:
+					val = t->Vector.elem;
+					idx = t_int;
+					break;
 				}
 			}