oxedyne/fe2o3 — fe2o3_text/tests/detect

1.3 KiB, 1 run

created by r1870400018:12038, which is this file's identity for as long as the history lasts, whatever it is later renamed to

1	use std::collections::HashMap;
2	use std::io::{self, BufRead};
3
4	/// A simple key-value store backed by a hash map.
5	pub struct Store {
6	data: HashMap<String, String>,
7	modified: bool,
8	}
9
10	impl Store {
11	/// Create an empty store.
12	pub fn new() -> Self {
13	Self {
14	data: HashMap::new(),
15	modified: false,
16	}
17	}
18
19	/// Insert a key-value pair, returning the old value if present.
20	pub fn insert(&mut self, key: String, value: String) -> Option<String> {
21	self.modified = true;
22	self.data.insert(key, value)
23	}
24
25	/// Retrieve a value by key.
26	pub fn get(&self, key: &str) -> Option<&String> {
27	self.data.get(key)
28	}
29
30	/// Return the number of entries.
31	pub fn len(&self) -> usize {
32	self.data.len()
33	}
34
35	/// Whether the store has been modified since creation.
36	pub fn is_modified(&self) -> bool {
37	self.modified
38	}
39	}
40
41	fn main() {
42	let mut store = Store::new();
43	let stdin = io::stdin();
44
45	for line in stdin.lock().lines() {
46	let line = line.expect("IO error");
47	let parts: Vec<&str> = line.splitn(2, '=').collect();
48	if parts.len() == 2 {
49	store.insert(parts[0].to_string(), parts[1].to_string());
50	}
51	}
52
53	println!("Stored {} entries, modified: {}", store.len(), store.is_modified());
54	}