rust read lines from stdin and return a vec

To read lines from stdin and return a Vec in Rust, you can use the std::io::stdin module along with the BufRead trait from the std::io module. Here's an example of how you can achieve this:

use std::io::{self, BufRead};

fn read_lines() -> Vec<String> {
    let stdin = io::stdin();
    let lines = stdin.lock().lines().filter_map(Result::ok).collect();
    lines
}

fn main() {
    let lines = read_lines();
    println!("{:?}", lines);
}

In this example, the read_lines function reads the lines from stdin and returns them as a Vec<String>. The stdin.lock().lines() expression returns an iterator over the lines from stdin, and filter_map(Result::ok) is used to filter out any errors and unwrap the lines. Finally, the collect method is used to collect the lines into a Vec<String>, which is then returned.

In the main function, we call read_lines to read the lines from stdin and store them in the lines variable. Then, we simply print the lines using println!("{:?}", lines) for demonstration purposes.

You can customize this code according to your specific requirements. Let me know if you need any further assistance!