From f362cad044d5171bedce093ba300eb72b4c79d81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Fri, 28 Feb 2025 21:54:21 +0900
Subject: [PATCH] feat(pbuf): add api B()

---
 pbuf/bytes.go | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pbuf/bytes.go b/pbuf/bytes.go
index 58c99bc..db40e40 100644
--- a/pbuf/bytes.go
+++ b/pbuf/bytes.go
@@ -15,9 +15,6 @@ type UserBytes[USRDAT any] struct {
 
 // BufferItemToBytes convert between *Buffer
 // and Bytes.
-//
-// Please notice that Bytes cannnot convert back to
-// *Buffer again.
 func BufferItemToBytes[USRDAT any](
 	buf *orbyte.Item[UserBuffer[USRDAT]],
 ) (b UserBytes[USRDAT]) {
@@ -28,6 +25,13 @@ func BufferItemToBytes[USRDAT any](
 	return
 }
 
+// B directly use inner buf data and USRDAT safely.
+func (b UserBytes[USRDAT]) B(f func([]byte, *USRDAT)) {
+	b.buf.P(func(ub *UserBuffer[USRDAT]) {
+		f(ub.Buffer.Bytes(), &ub.DAT)
+	})
+}
+
 // NewBytes alloc sz bytes.
 func (bufferPool BufferPool[USRDAT]) NewBytes(sz int) (b UserBytes[USRDAT]) {
 	buf := bufferPool.p.New(sz)