Final version for http://dtrace.org/blogs/ahl/2015/06/22/first-rust-program-pain/

scrabble.rs

use std::fs::File;
use std::path::Path;
use std::io::BufReader;
use std::io::BufRead;
use std::collections::HashMap;
use std::io::stdin;

fn sort_str(s: &String) -> String {
	let mut v: Vec<char> = s.chars().collect();
	v.sort();
	v.into_iter().collect()
}

fn main() {
	let path = Path::new("../word.lst");
	let file = match File::open(&path) {
		Err(why) => panic!("failed to open {}: {}", path.display(), why),
		Ok(f) => f,
	};

	let mut dict: HashMap<String, Vec<String>> = HashMap::new();

	for line in BufReader::new(file).lines() {
		let s = line.unwrap();
		dict.entry(sort_str(&s)).or_insert(Vec::new()).push(s);
	}

	let sin = stdin();

	for line in sin.lock().lines() {
		let s = line.unwrap();

		match dict.get(&sort_str(&s)) {
			Some(v) => println!("anagrams for {}: {}", s, v.connect(" ")),
			None => println!("no dice"),
		}
	}
}