diff --git a/container_type/Cargo.toml b/container_type/Cargo.toml
new file mode 100644
index 0000000..644a2e5
--- /dev/null
+++ b/container_type/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "container_type"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/container_type/src/main.rs b/container_type/src/main.rs
new file mode 100644
index 0000000..df75750
--- /dev/null
+++ b/container_type/src/main.rs
@@ -0,0 +1,100 @@
+/**
+ *                _ _   _               _
+ * __      ___ __(_) |_| |_ ___ _ __   | |__  _   _
+ * \ \ /\ / / '__| | __| __/ _ \ '_ \  | '_ \| | | |
+ *  \ V  V /| |  | | |_| ||  __/ | | | | |_) | |_| |
+ *   \_/\_/ |_|  |_|\__|\__\___|_| |_| |_.__/ \__, |
+ *                                            |___/
+ *  ____                  __     __               _
+ * / ___|_   _____ _ __   \ \   / /__   __ _  ___| |
+ * \___ \ \ / / _ \ '_ \   \ \ / / _ \ / _` |/ _ \ |
+ *  ___) \ V /  __/ | | |   \ V / (_) | (_| |  __/ |
+ * |____/ \_/ \___|_| |_|    \_/ \___/ \__, |\___|_|
+ *                                     |___/
+ * Licensed under the GPLv2 License, Version 2.0 (the "License");
+ * Copyright (c) Sven Vogel
+ */
+
+use std::ops::{Index, IndexMut};
+
+pub struct WeddingCouplePile<A, B> {
+    couples: Vec<(A, B)>
+}
+
+impl<A, B> WeddingCouplePile<A, B> where A: PartialEq {
+    pub fn new() -> Self {
+        Self {
+            couples: Vec::new(),
+        }
+    }
+
+    pub fn get(&self, key: A) -> Option<&B> {
+        return if let Some((_, v)) = self.couples.iter().filter(|(k,_)|*k==key).nth(0) {
+            Some(v)            
+        } else {
+            None
+        }
+    }
+
+    pub fn get_mut(&mut self, key: A) -> Option<&mut B> {
+        return if let Some((_, v)) = self.couples.iter_mut().filter(|(k, _)|*k==key).nth(0) {
+            Some(v)            
+        } else {
+            None
+        }
+    }
+
+    pub fn insert(&mut self, key: A, value: B) {
+        if let Some((idx, _)) = self.couples.iter().enumerate().filter(|(_, (a, _))| *a == key).nth(0) {
+            self.couples.insert(idx, (key, value))
+        } else {
+            self.couples.push((key, value))
+        }
+    }
+
+    pub fn remove(&mut self, key: A) -> Option<B> {
+        return if let Some((idx, _)) = self.couples.iter().enumerate().filter(|(_, (a, _))| *a == key).nth(0) {
+            Some(self.couples.remove(idx).1)
+        } else {
+            None
+        }
+    }
+}
+
+impl<A, B> Index<A> for WeddingCouplePile<A, B> where A: PartialEq {
+    type Output=B;
+
+    fn index(&self, index: A) -> &Self::Output {
+        self.get(index).unwrap()
+    }
+}
+
+impl<A, B> IndexMut<A> for WeddingCouplePile<A, B> where A: PartialEq {
+
+    fn index_mut(&mut self, index: A) -> &mut Self::Output {
+        self.get_mut(index).unwrap()
+    }
+}
+
+impl<A, B> IntoIterator for WeddingCouplePile<A, B> {
+    type Item = (A, B);
+    type IntoIter = std::vec::IntoIter<Self::Item>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.couples.into_iter()
+    }
+}
+
+fn main() {
+
+    let mut couples = WeddingCouplePile::<&str, u64>::new();
+
+    couples.insert("Klaus", 0xCafeBabe);
+    couples.insert("Peter", 0xDeadbeef);
+    
+    couples["Klaus"] = 0xBadF00d;
+
+    for (a, b) in couples.into_iter() {
+        println!("({a}, {:x})", b);
+    }
+}