Rust 備忘録

pub struct Data {
    pub records: Vec<Vec<String>>,
    hash_records: HashSet<Vec<String>>,
}

impl Data {
    pub fn new() -> Self {
        Self {
            records: Vec::<Vec<String>>::new(),
            hash_records: HashSet::<Vec<String>>::new(),
        }
    }
    pub fn add_records(&mut self, record: Vec<String>) {
        // 先頭要素を無視して HashSet に登録することでレコードのユニークを維持
        if self
            .hash_records
            .insert(record.split_first().unwrap().1.to_vec())
        {
            self.records.push(record);
        }
    }
}

fn check_and_create_directory(path: &PathBuf) {
    let dir = if path.extension().is_some() {
        path.with_file_name("").with_extension("")
    } else {
        path.to_path_buf()
    };

    if !dir.exists() {
        if let Err(e) = std::fs::create_dir_all(dir) {
            panic!("Error: ディレクトリ作成でエラー\n{}", e);
        }
    }
}

fn any_function() {
  let vec: Vec<i32> = vec![10; 10];
  let pb = indicatif::ProgressBar::new(vec.len());
  pb.set_style(
      indicatif::ProgressStyle::with_template(
          "[{elapsed_precise}] {wide_bar:.cyan/blue} {pos:>7}/{len:7} {msg}",
      )
      .unwrap()
      .progress_chars("##-"),
  );

  for v in vec {
    std::thead::sleep(v);
    pb.inc(1);
  }

  pb.finish_with_message("suzaku data converted to dateone data.");
}

fn main(){
  let mut buffer = String::new();
  if let Ok(_) = std::io::stdin().read_line(&mut buffer) {
    println!("{}", buffer);
  }
}

use std::io::BufRead;
fn main(){
  let stdin = std::io::stdin();
  let mut stdinlock = stdin.lock();
  let lines = stdinlock.lines();
  
  for line in lines {
    if let Ok(buffer) = line {
      println!("{}", buffer);
    }
  }
}