From 2b8d2babfabe8f4fbbdb980ce2d15cb25d012606 Mon Sep 17 00:00:00 2001
From: Josh Bleecher Snyder <josh@tailscale.com>
Date: Tue, 29 Sep 2020 17:38:56 -0700
Subject: [PATCH] tailcfg: add IsZero methods to UserID and NodeID

These will be helpful for doing some automated refactoring.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
---
 tailcfg/tailcfg.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tailcfg/tailcfg.go b/tailcfg/tailcfg.go
index 631201c5a..87d186d92 100644
--- a/tailcfg/tailcfg.go
+++ b/tailcfg/tailcfg.go
@@ -27,10 +27,18 @@ type ID int64
 
 type UserID ID
 
+func (u UserID) IsZero() bool {
+	return u == 0
+}
+
 type LoginID ID
 
 type NodeID ID
 
+func (u NodeID) IsZero() bool {
+	return u == 0
+}
+
 type GroupID ID
 
 type RoleID ID