From bd54b61746285faf3df487278b6ad7b0106a9c07 Mon Sep 17 00:00:00 2001
From: Nick Khyl <nickk@tailscale.com>
Date: Fri, 19 Jul 2024 15:14:28 -0500
Subject: [PATCH] types/opt: add (Value[T]).GetOr(def T) T method

Updates #12736

Signed-off-by: Nick Khyl <nickk@tailscale.com>
---
 types/opt/value.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/types/opt/value.go b/types/opt/value.go
index 1781731a4..54fab7a53 100644
--- a/types/opt/value.go
+++ b/types/opt/value.go
@@ -64,6 +64,14 @@ func (o Value[T]) Get() T {
 	return o.value
 }
 
+// GetOr returns the value of o or def if a value hasn't been set.
+func (o Value[T]) GetOr(def T) T {
+	if o.set {
+		return o.value
+	}
+	return def
+}
+
 // Get returns the value and a flag indicating whether the value is set.
 func (o Value[T]) GetOk() (v T, ok bool) {
 	return o.value, o.set