feat: add Of and Unwrap

pointer/pointer.go

@@ -1,8 +1,25 @@
+// Copyright 2023 dudaodong@gmail.com. All rights reserved.
+// Use of this source code is governed by MIT license.
+
+// Package pointer contains some util functions to operate go pointer.
 package pointer
 
 import "reflect"
 
+// Of returns a pointer to the value `v`.
+// Play: todo
+func Of[T any](v T) *T {
+	return &v
+}
+
+// Unwrap returns the value from the pointer.
+// Play: todo
+func Unwrap[T any](p *T) T {
+	return *p
+}
+
 // ExtractPointer returns the underlying value by the given interface type
+// Play: todo
 func ExtractPointer(value any) any {
 	t := reflect.TypeOf(value)
 	v := reflect.ValueOf(value)