小编Koz*_*i11的帖子

如何在Rust中执行与此D和Java代码类似的操作？

Java的:

import java.nio.file.*;
import java.io.*;

public class Main {
    public static void main( String[] args ) throws IOException
    {
        Files.lines(Paths.get("/home/kozak/test.txt"))
            .filter(s -> s.endsWith("/bin/bash"))
            .map(s -> s.split(":", 2)[0])
            .forEach(System.out::println);
    }
}

D语言:

import std.algorithm;
import std.stdio;

void main() {
    File("/home/kozak/test.txt")
        .byLine
        .filter!((s)=>s.endsWith("/bin/bash"))
        .map!((s)=>s.splitter(":").front)
        .each!writeln;
}

我尝试了,但我迷失了所有这些所有权的东西

我的防锈代码:

use std::io::BufReader;
use std::fs::File;
use std::io::BufRead;
use std::io::Lines;

fn main() {
    let file = match File::open("/etc/passwd") {
        Ok(file) => file,
        Err(..)  => panic!("room"),
    };

    let mut reader = BufReader::new(&file);
    for line in reader.lines().filter_map( …