How can I read user input in Rust?

Question

I intend to make a tokenizer. I need to read every line the user types and stop reading once the user presses Ctrl + D.

I searched around and only found one example on Rust IO which does not even compile. I looked at the io module's documentation and found that the read_line() function is part of the ReaderUtil interface, but stdin() returns a Reader instead.

The code that I would like would essentially look like the following in C++:

vector<string> readLines () {     vector<string> allLines;     string line;      while (cin >> line) {         allLines.push_back(line);     }      return allLines; } 

_{This question refers to parts of Rust that predate Rust 1.0, but the general concept is still valid in Rust 1.0.}

Answer 1

Rust 1.x (see documentation):

use std::io; use std::io::prelude::*;  fn main() {     let stdin = io::stdin();     for line in stdin.lock().lines() {         println!("{}", line.unwrap());     } } 

Rust 0.10–0.12 (see documentation):

use std::io;  fn main() {     for line in io::stdin().lines() {         print!("{}", line.unwrap());     } } 

Rust 0.9 (see 0.9 documentation):

use std::io; use std::io::buffered::BufferedReader;  fn main() {     let mut reader = BufferedReader::new(io::stdin());     for line in reader.lines() {         print(line);     } } 

Rust 0.8:

use std::io;  fn main() {     let lines = io::stdin().read_lines();     for line in lines.iter() {         println(*line);     } } 

Rust 0.7:

use std::io;  fn main() {     let lines = io::stdin().read_lines();     for lines.iter().advance |line| {         println(*line);     } }