1use anyhow::Result; 2 3pub fn read_line() -> Result<String> { 4 let mut line = String::new(); 5 std::io::stdin().read_line(&mut line)?; 6 Ok(line) 7} 8 9pub fn join_array(arr: Vec<String>) -> String { 10 "[".to_string() + &arr.join(",") + "]" 11}