From 563b1e2b285e788338aecfa9f3d6536fb9516fd0 Mon Sep 17 00:00:00 2001
From: Ginger Bill <bill@gingerbill.org>
Date: Thu, 19 Jan 2017 19:02:44 +0000
Subject: `immutable` field prefix

---
 code/demo.odin | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'code')

diff --git a/code/demo.odin b/code/demo.odin
index 4b4781323..272ef0ec2 100644
--- a/code/demo.odin
+++ b/code/demo.odin
@@ -10,6 +10,13 @@
 #import "utf8.odin";
 
 main :: proc() {
+	T :: struct { x, y: int }
+	foo :: proc(using immutable t: T) {
+		a0 := t.x;
+		a1 := x;
+		x = 123; // Error: Cannot assign to an immutable: `x`
+	}
+
 	// foo :: proc(x: ^i32) -> (int, int) {
 	// 	fmt.println("^int");
 	// 	return 123, int(x^);
-- 
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