--- title: Go入門ハンズオン [準備編] tags: #go author: [Ryuji Iwata](https://www.docswell.com/user/qt-luigi) site: [Docswell](https://www.docswell.com/) thumbnail: https://bcdn.docswell.com/page/K74MKD4YJ1.jpg?width=480 description: 2025年12月13日(土)に兵庫県神戸市で開催された「Go Workshop Conference 2025 IN KOBE」にて招待ワークショップとして「はじめてのGo言語教室」を開催した際に使用したテキスト「Go入門ハンズオン [準備編]」です。 published: December 14, 25 canonical: https://www.docswell.com/s/qt-luigi/ZLVDPP-the-first-go-room-setup-20251213 --- # Page. 1 ![Page Image](https://bcdn.docswell.com/page/K74MKD4YJ1.jpg) Go入門ハンズオン [準備編] はじめてのGo言語教室 13 December 2025 Ryuji Iwata Okayama, Japan # Page. 2 ![Page Image](https://bcdn.docswell.com/page/LJ18XZ4NEG.jpg) Ryuji Iwata X (Twitter) : @qt_luigi Portfolio : sites.google.com/view/ryuji-iwata-portfolio 2 # Page. 3 ![Page Image](https://bcdn.docswell.com/page/GJWZN9ZMJ2.jpg) お品書き • 必要なものを揃えよう • Goを準備しよう 2 3 # Page. 4 ![Page Image](https://bcdn.docswell.com/page/4EZ1391M73.jpg) 必要なものを揃えよう 3 4 # Page. 5 ![Page Image](https://bcdn.docswell.com/page/Y76LXKL5JV.jpg) Goのコードを書く人 • マスコットキャラクターと同じ呼称で「Gopher (ごーふぁー)」 3.0 Creating your own gopher. // model sheet The model sheet is a illustration guideline for those who are interested in developing their own adaptations of the gopher. For additional background and guidance, please watch the creator's Character Study video here: https://www.youtube.com/ watch?v=4rw_B4yY69k double tooth or single tooth two ways of holding objects: under the arm nub, and by touch when seated, the bellyflesh folds in half back side front side ears blowing back, motion lines, and maybe a drop of sweat for action shots emotions are shown using eye shape, no eyebrows please GO BRAND BOOK V 1.0 PAGE 22 go.dev/s/brandbook 4 5 # Page. 6 ![Page Image](https://bcdn.docswell.com/page/G751XP1GE4.jpg) Goを動作させるコンピューター • OS (Windows、macOS、Linux、など) は、最新またはそれに近いものを。 • 場所はパソコン上でもクラウド上でも。 5 6 # Page. 7 ![Page Image](https://bcdn.docswell.com/page/9J21X61D7R.jpg) Go • オープンソースで静的型付けコンパイル形式の汎用プログラミング言語。 • 標準でCLIコマンド、共有ライブラリー、Webアプリ、モバイルアプリを生成可能。 • 用途はクラウド、ミドルウェア、組み込み、ゲーム、ブロックチェーン、など。 =GO Why Go Learn Docs Packages Community Build simple, secure, scalable systems with Go ✓ An open-source programming language supported by Google ✓ Easy to learn and great for teams ✓ Built-in concurrency and a robust standard library ✓ Large ecosystem of partners, communities, and tools Get Started Download Download packages for Windows 64-bit, macOS, Linux, and more The go command by default downloads and authenticates modules using the Go module mirror and Go checksum database run by Google. Learn more. Companies using Go Organizations in every industry use Go to power their software and services View all stories Google P AMERICAN EXPRESS mercado libre bitly CapitalOne CLOUDFARE Meta WILD LIFE go.dev/ 6 7 # Page. 8 ![Page Image](https://bcdn.docswell.com/page/DEYZ89ZM7M.jpg) テキストエディター • コードを書くために必要。 • 無償だとVisual Studio CodeやVim、有償だとGoLand、など。 • BOMなしのUTF-8のファイルが作成できるものであればO.K. Visual Studio Code Docs Updates Blog API Extensions MCP FAQ Search Docs Download The open source Al code editor Download for macOS Web, Insiders edition, or other platforms By using VS Code, you agree to its license and privacy statement. MailList.tsx MailListitem.tsx Extract MailListitem into stan AGENT SESSIONS LOCAL CHAT AGENT Refactoring MailList component st... GITHUB COPILOT CLOUD AGENT Extract MailListitem into st... 10 min #1 +42 -24 import { for, createSignal, createMemo } from "solid-js" import { useNavigate, useParams } from "@tanstack/solid- import { getEmailsForMailbox } from "~/data/emails"; import { MailListItem } from "~/components/MailListItem" export function MailList() { const params = useParams({ strict: false }) as { mailbox?: string; id?: string; }; const navigate = useNavigate(); const [query, setQuery] = createSignal(""); const mailbox = () => params.mailbox || "inbox"; const list = createMemo(() => { const q = query().toLowerCase(); return getEmailsForMailbox(mailbox()).filter( (e) => CHAT Please update the MailList component to abstract mail list items into their own standalone component. GitHub Copilot Cloud Agent Delegate to cloud agent The agent will work asynchronously to create a pull request with your requested changes. code.visualstudio.com/ 7 8 # Page. 9 ![Page Image](https://bcdn.docswell.com/page/VJN3QL33J8.jpg) Git • ソースコードを管理するシステムおよびコマンド。 • 外部パッケージを入手する際に必要で、多くがGitHub上で公開。 • macOSやLinuxでは標準で対応可能、Windowsでは別途インストールが必要。 ※ 今回は使用しません。 git --distributed-is-the-new-centralized Type / to search entire site... Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Git is lightning fast and has a huge ecosystem of GUIs, hosting services, and command-line tools. About Git's performance and ecosystem Tools Command line tools, GUIs, and hosting services Install Binary releases for all major platforms. Learn Pro Git book, videos, tutorials, and cheat sheet Reference Git's reference documentation Community Get involved! Bug reporting, mailing list, chat, development and more. Latest source release 2.52.0 Release Notes (2025-11-27) Install for Mac GitHub Repository git-scm.com/ 8 9 # Page. 10 ![Page Image](https://bcdn.docswell.com/page/YE99D49PE3.jpg) Goを準備しよう 9 10 # Page. 11 ![Page Image](https://bcdn.docswell.com/page/GE893Q9X7D.jpg) ダウンロード&インストール 基本は、公式サイトから対象OSのGoをダウンロードしてインストール。 go.dev/dl/ • 基本は「Featured downloads」から選択。 go.dev/dl/#featured • 詳しい人は「Stable versions」から選択。 go.dev/dl/#stable Featured downloads Microsoft Windows Windows 10 or later, Intel 64-bit processor go1.25.5.windows-amd64.msi Apple macOS (ARM64) macOS 12 or later, Apple 64-bit processor go1.25.5.darwin-arm64.pkg Apple macOS (x86-64) macOS 12 or later, Intel 64-bit processor go1.25.5.darwin-amd64.pkg Linux Linux 3.2 or later, Intel 64-bit processor go1.25.5.linux-amd64.tar.gz Source go1.25.5.src.tar.gz go.dev/dl/#featured 10 11 # Page. 12 ![Page Image](https://bcdn.docswell.com/page/LELWVXWNJR.jpg) 動作確認 1. ターミナル画面を起動。 • Windows : コマンドプロンプト、PowerShell • macOS, Linux : ターミナル • VS Code : メニューバーから「Terminal」-「New Terminal」を選択 2. go versionコマンドでGoが正常にインストールされていることを確認。 $ go version go version go1.25.5 darwin/amd64 11 12 # Page. 13 ![Page Image](https://bcdn.docswell.com/page/4JM9GL9QEW.jpg) Thank you Ryuji Iwata Okayama, Japan @qt_luigi 12