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Scalaで世界に挨拶してみる

cousierのインストール

coursier はScalaやJavaのパッケージやツール（例：sbt、scala、scala-cli、jvm など）を素早くインストール・管理できるツール。

coursier/coursier - GitHub

# On Linux x86-64 (aka AMD64)

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#!/usr/bin/env bash

set -e

INSTALL_DIR="$HOME/.dotnet"
VERSION_PREFIX=""
RUNTIMES=()
DRY_RUN=false
AUTO_YES=false
LIST_MODE=false

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[package]
name = "rustyfeed"
version = "0.1.0"
edition = "2024"

[dependencies]
clap = { version = "4.5.32", features = ["derive"] }
reqwest = "0.12.15"
serde = { version = "1.0.219", features = ["derive"] }
syndication = "0.5.0"

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# About:
#   Dockerfile for SML# a Standard ML family programming language
# See: 
#   https://github.com/smlsharp/smlsharp
# Usage:
#   docker build -t smlsharp .
#   docker run --rm -it smlsharp:latest rlwrap smlsharp
#
FROM --platform=linux/x86-64 debian:buster

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mod cli {
    use std::io::Write;

    #[derive(Debug, thiserror::Error)]
    pub enum CliError {
        #[error("failed to flush stdout: {0}")]
        Flush(std::io::Error),

        #[error("failed read line: {0}")]
        ReadLine(std::io::Error),

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/// A module for emitting [`Event`] defined in this module by internally looping events and handling crossterm events
use crossterm::event::{Event as CrosstermEvent, EventStream as CrosstermEventStream};
use pin_project::pin_project;
use std::time::Duration;
use tokio::sync::mpsc;
use tokio_stream::{Stream, StreamExt};

#[derive(Debug, Clone, Copy)]
pub enum Event {
    Tick,

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Cheat sheet for windows-rs 🚀

🦀 Basic string types in Rust

• String:
  A growable, heap-allocated string type. It's the most common string type used in Rust and is often used when you need to modify the string's contents.

• &str:
  A string slice, which is a reference to a portion of a string, usually a part of a String or a string literal. It is an immutable reference to a sequence of UTF-8 encoded bytes.

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use clap::{Parser, ValueEnum};
use glob::{glob, GlobError, PatternError};
use std::path::PathBuf;
use thiserror::Error;


#[derive(Debug, clap::Parser)]
struct Args {
    #[arg(help = "Target files path")]
    files: Vec<String>,

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package main

import (
	"progressbar_example/progress"
	"time"
)

func main() {
	count := 10000

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use eyre::{Result, WrapErr};
use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufWriter};
use tokio::process::Command; // Use eyre for error handling

pub async fn run_command<W: tokio::io::AsyncWrite + Send + 'static + Unpin>(
    cmd: &str,
    args: &[&str],
    stdout_writer: W,
    stderr_writer: W,
) -> Result<()> {