updated container_type
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76eaee60a7
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51e769be91
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@ -1,3 +1,5 @@
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use std::{vec::{IntoIter}, ops::Index, ops::IndexMut, println};
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/**
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* _ _ _ _
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* __ ___ __(_) |_| |_ ___ _ __ | |__ _ _
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@ -15,86 +17,89 @@
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* Copyright (c) Sven Vogel
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*/
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use std::ops::{Index, IndexMut};
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pub struct WeddingCouplePile<A, B> {
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couples: Vec<(A, B)>
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pub struct HashishMap<K, V> where K: Eq {
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vec: Vec<(K, V)>
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}
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impl<A, B> WeddingCouplePile<A, B> where A: PartialEq {
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impl<K, V> HashishMap<K, V> where K: Eq {
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pub fn new() -> Self {
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Self {
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couples: Vec::new(),
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Self { vec: vec![] }
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}
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pub fn get(&self, key: &K) -> Option<&V> {
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return match self.vec.iter().find(|(k, _)| *k == *key) {
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Some((_, v)) => Some(v),
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_ => None
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}
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}
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pub fn get(&self, key: A) -> Option<&B> {
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return if let Some((_, v)) = self.couples.iter().filter(|(k,_)|*k==key).nth(0) {
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Some(v)
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} else {
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None
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pub fn get_mut(&mut self, key: &K) -> Option<&mut V> {
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return match self.vec.iter_mut().find(|(k, _)| *k == *key) {
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Some((_, v)) => Some(v),
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_ => None
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}
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}
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pub fn get_mut(&mut self, key: A) -> Option<&mut B> {
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return if let Some((_, v)) = self.couples.iter_mut().filter(|(k, _)|*k==key).nth(0) {
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Some(v)
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pub fn insert(&mut self, key: K, value: V) {
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if let Some(val) = self.get_mut(&key) {
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*val = value;
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} else {
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None
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self.vec.push((key, value));
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}
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}
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pub fn insert(&mut self, key: A, value: B) {
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if let Some((idx, _)) = self.couples.iter().enumerate().filter(|(_, (a, _))| *a == key).nth(0) {
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self.couples.insert(idx, (key, value))
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} else {
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self.couples.push((key, value))
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}
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}
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pub fn remove(&mut self, key: A) -> Option<B> {
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return if let Some((idx, _)) = self.couples.iter().enumerate().filter(|(_, (a, _))| *a == key).nth(0) {
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Some(self.couples.remove(idx).1)
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} else {
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None
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pub fn remove(&mut self, key: &K) -> Option<V> {
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// find a key matching the parameter and its according index.
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// remove the item at the found index from the vector and return its value
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return match self.vec.iter().enumerate().find(|(_, (k, _))| *k == *key) {
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Some((idx, _)) => {
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Some(self.vec.remove(idx).1)
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},
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_ => None
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}
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}
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}
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impl<A, B> Index<A> for WeddingCouplePile<A, B> where A: PartialEq {
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type Output=B;
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impl<K,V> Index<K> for HashishMap<K, V> where K: Eq {
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type Output=V;
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fn index(&self, index: A) -> &Self::Output {
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self.get(index).unwrap()
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fn index(&self, index: K) -> &Self::Output {
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self.get(&index).unwrap()
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}
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}
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impl<A, B> IndexMut<A> for WeddingCouplePile<A, B> where A: PartialEq {
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fn index_mut(&mut self, index: A) -> &mut Self::Output {
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self.get_mut(index).unwrap()
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impl<K,V> IndexMut<K> for HashishMap<K, V> where K: Eq {
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fn index_mut(&mut self, index: K) -> &mut Self::Output {
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self.get_mut(&index).unwrap()
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}
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}
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impl<A, B> IntoIterator for WeddingCouplePile<A, B> {
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type Item = (A, B);
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type IntoIter = std::vec::IntoIter<Self::Item>;
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impl<K, V> IntoIterator for HashishMap<K, V> where K: Eq {
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type Item=(K, V);
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type IntoIter = IntoIter<Self::Item>;
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fn into_iter(self) -> Self::IntoIter {
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self.couples.into_iter()
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self.vec.into_iter()
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}
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}
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fn main() {
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let mut couples = WeddingCouplePile::<&str, u64>::new();
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let mut guter_stoff = HashishMap::<&str, u64>::new();
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couples.insert("Klaus", 0xCafeBabe);
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couples.insert("Peter", 0xDeadbeef);
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couples["Klaus"] = 0xBadF00d;
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guter_stoff.insert("helmut", 0xCafeBabe);
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guter_stoff.insert("dieter", 0xDeadbeef);
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guter_stoff.insert("eisele", 0xBaadF00d);
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guter_stoff.insert("bohlen", 0xFaceFeed);
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for (a, b) in couples.into_iter() {
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println!("({a}, {:x})", b);
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guter_stoff[&"bohlen"] = 0xBaadB015;
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guter_stoff.remove(&"helmut");
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for (k, v) in guter_stoff {
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println!("({k}, {:x})", v);
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}
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}
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}
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