From fe19c87dd9cc7c5c8294c9aa6d04a37e5f0b897d Mon Sep 17 00:00:00 2001
From: Achilleas Koutsou <achilleas@koutsou.net>
Date: Mon, 17 Mar 2025 16:59:43 +0100
Subject: [PATCH] common: new utility function: DerefOrDefault()

This is sort of the opposite of ToPtr().  It dereferences a pointer to
its base value or returns the default value for the type if the pointer
is nil.
---
 internal/common/pointers.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/internal/common/pointers.go b/internal/common/pointers.go
index 58be2aab1..b262fb78d 100644
--- a/internal/common/pointers.go
+++ b/internal/common/pointers.go
@@ -3,3 +3,13 @@ package common
 func ToPtr[T any](x T) *T {
 	return &x
 }
+
+// DerefOrDefault returns the dereferenced value of the given pointer or the
+// default value for the type if unset.
+func DerefOrDefault[T any](p *T) T {
+	var v T
+	if p != nil {
+		v = *p
+	}
+	return v
+}