updated container_type

This commit is contained in:
Sven Vogel 2023-05-17 09:35:08 +02:00
parent 76eaee60a7
commit 51e769be91
1 changed files with 53 additions and 48 deletions

View File

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