From 5ce805c5432f5ff28d443c08c5df95c155904545 Mon Sep 17 00:00:00 2001
From: raj_mathe <raj.dahya@math.uni-leipzig.de>
Date: Thu, 14 Apr 2022 11:55:31 +0200
Subject: [PATCH] =?UTF-8?q?master=20>=20master:=20code-rust=20-=20`.contai?=
 =?UTF-8?q?ns`=20methode=20f=C3=BCr=20stacks=20hinzugef=C3=BCgt?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 code/rust/src/stacks/stack.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/code/rust/src/stacks/stack.rs b/code/rust/src/stacks/stack.rs
index a71a5a2..893f47e 100644
--- a/code/rust/src/stacks/stack.rs
+++ b/code/rust/src/stacks/stack.rs
@@ -18,7 +18,7 @@ pub struct Stack<T> {
 }
 
 impl<T> Stack<T>
-where T: Clone + ToString {
+where T: Clone + ToString + Eq {
     /// Creates new typed instance of stack.
     pub fn new() -> Stack<T> {
         return Stack {
@@ -53,6 +53,11 @@ where T: Clone + ToString {
         return element;
     }
 
+    /// checks if element in stack:
+    pub fn contains(self: &Self, element: &T) -> bool {
+        return self.elements.contains(element);
+    }
+
     /// convert entries to strings
     #[allow(dead_code)]
     fn repr(self: &Self) -> Vec<String> {