read file in rust bufreader

To read a file in Rust using BufReader, you can follow these steps:

Import the necessary modules:

use std::fs::File;
use std::io::{BufRead, BufReader};

Open the file using File::open:

let file = File::open("path/to/file.txt")?;

Create a BufReader instance:

let reader = BufReader::new(file);

Iterate over the lines of the file using the lines method of BufRead:

for line in reader.lines() {
    let line = line?;
    // Process each line here
}

Here's the complete code snippet:

use std::fs::File;
use std::io::{BufRead, BufReader};

fn main() -> std::io::Result<()> {
    let file = File::open("path/to/file.txt")?;
    let reader = BufReader::new(file);

    for line in reader.lines() {
        let line = line?;
        // Process each line here
    }

    Ok(())
}

Please note that you need to replace "path/to/file.txt" with the actual path to your file. Let me know if you need further assistance!