From 8e15d802865ed57db0018c15ea5559c8bd44c01f Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Wed, 7 Sep 2022 02:48:46 +0800
Subject: First working version. Just a POC.

---
 common/orelse.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 common/orelse.go

(limited to 'common/orelse.go')

diff --git a/common/orelse.go b/common/orelse.go
new file mode 100644
index 0000000..a96bde7
--- /dev/null
+++ b/common/orelse.go
@@ -0,0 +1,20 @@
+package common
+
+type Opt[T any] struct {
+	thing T
+	err   error
+}
+
+func Optional[T any](thing T, err error) Opt[T] {
+	return Opt[T]{
+		thing: thing,
+		err:   err,
+	}
+}
+
+func (o Opt[T]) OrElse(thing T) T {
+	if o.err != nil {
+		return thing
+	}
+	return o.thing
+}
-- 
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