From 653e79c3e0515cc33b9915973c8e43021f8f2a87 Mon Sep 17 00:00:00 2001
From: littleblack111 <littleblack11111@gmail.com>
Date: Thu, 23 Oct 2025 22:16:18 +0800
Subject: refactor: just use &[T]

---
 src/hash_chain.rs | 6 +++---
 src/ui.rs         | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/hash_chain.rs b/src/hash_chain.rs
index e0ae1f2..e3a743c 100644
--- a/src/hash_chain.rs
+++ b/src/hash_chain.rs
@@ -40,7 +40,7 @@ impl<T: Encode> HashChain<T> {
 
     // TODO: make try_last that does same as this but returns Err() if it's not the
     // last one and/or refuse to insert
-    pub fn insert(&mut self, data: T, base_hash: &Vec<u8>) {
+    pub fn insert(&mut self, data: T, base_hash: &[u8]) {
         let pos = self
             .data
             .iter()
@@ -53,7 +53,7 @@ impl<T: Encode> HashChain<T> {
         self.rehash(&base_hash);
     }
 
-    pub fn verify(&self, until_hash: Vec<u8>) -> bool {
+    pub fn verify(&self, until_hash: &[u8]) -> bool {
         let pos = self
             .data
             .iter()
@@ -92,7 +92,7 @@ impl<T: Encode> HashChain<T> {
             });
     }
 
-    pub fn hash_item(data: (&Vec<u8>, &T)) -> Vec<u8> {
+    pub fn hash_item(data: (&[u8], &T)) -> Vec<u8> {
         let mut hasher = Sha256::new();
         hasher.update(bincode::encode_to_vec(data, bincode::config::standard()).unwrap());
         hasher
diff --git a/src/ui.rs b/src/ui.rs
index fe2d186..f11eaaa 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -62,7 +62,7 @@ impl Ui {
             if let Some(cmd) = cmd.get(1) {
                 if *cmd == "verify" {
                     bc.verify(
-                        bc.last()
+                        &bc.last()
                             .unwrap()
                             .0
                             .clone(),
-- 
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