From e8ef3454880b92a5485a339b3b6fe7b64cfe5305 Mon Sep 17 00:00:00 2001
From: Lam Wei Lun <weilun.lam@gmail.com>
Date: Wed, 21 Jan 2026 19:35:12 +0800
Subject: Add length, clear, is_empty to Stack and Queue

---
 std/stack.zc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'std/stack.zc')

diff --git a/std/stack.zc b/std/stack.zc
index 3d7c3c5..7df77f1 100644
--- a/std/stack.zc
+++ b/std/stack.zc
@@ -50,6 +50,18 @@ impl Stack<T> {
     }
     return Option<T>::None();
   }
+
+  fn length(self) -> usize {
+    return self.len;
+  }
+
+  fn clear(self) {
+    self.len = 0;
+  }
+
+  fn is_empty(self) -> bool {
+    return self.len == 0;
+  }
 }
 
 impl Drop for Stack<T> {
-- 
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