⎹use std::fs; let contents = fs::read_to_string("file.txt").expect("Failed to read");↵
let doubled: Vec<i32> = numbers.iter().map(|x| x * 2).collect();↵
use std::fs; let contents = fs::read_to_string("file.txt").expect("Failed to read");↵
let doubled: Vec<i32> = numbers.iter().map(|x| x * 2).collect();↵
cargo bench
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