https://metavige.github.io/tags/golang/Recent content in Golang on @metavigeHugozh-TWThu, 09 Mar 2017 21:55:40 +0800https://metavige.github.io/2017/03/09/golang-day3/Thu, 09 Mar 2017 21:55:40 +0800https://metavige.github.io/2017/03/09/golang-day3/<p>學習其實很無聊～沒有特別要做什麼的話，看著看著就想睡了～ 所以後來決定，之後就把程式碼做好放到 <a href="https://github.com/metavige/golang.learn" target="_blank" rel="noreferrer">github</a> 去好了<br> 一次想一個想要做的小功能，這樣或許比較有趣</p>https://metavige.github.io/2017/03/08/golang-day2/Wed, 08 Mar 2017 00:00:00 +0800https://metavige.github.io/2017/03/08/golang-day2/<h2 id="golang-語法注意" class="relative group">Golang 語法注意 <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#golang-%e8%aa%9e%e6%b3%95%e6%b3%a8%e6%84%8f" aria-label="定位點">#</a></span></h2><ul> <li>格式很重要，不管是空行或者是 TAB、大括號等位置，很重要，會編譯不過。不過可以用 gofmt 工具幫你自動排版程式。</li> <li>所有的程式需要用 package 整理，有點像是 java package/module 的觀念</li> <li>主程式一定是 <code>package main</code>, 而且一定會呼叫 <code>func main()</code></li> <li>引用不必要的 packages 會錯誤</li> <li>沒用到的變數也會錯誤</li> <li>不需要分號結尾</li> <li>條件式不需要用 () 包起來 (這我就有點不習慣了～因為 Java, javascript, C# 都要)</li> <li>golang 應該不算是 OOP, 所以要習慣沒有類別 (Class) 封裝這件事情</li> </ul> <h2 id="reference" class="relative group">Reference <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#reference" aria-label="定位點">#</a></span></h2><ul> <li><a href="https://wizardforcel.gitbooks.io" target="_blank" rel="noreferrer">GO 聖經 - gitbook</a></li> </ul>https://metavige.github.io/2017/03/06/golang-day1/Mon, 06 Mar 2017 22:00:00 +0800https://metavige.github.io/2017/03/06/golang-day1/<h2 id="安裝" class="relative group">安裝 <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#%e5%ae%89%e8%a3%9d" aria-label="定位點">#</a></span></h2><pre tabindex="0"><code>brew install golang </code></pre><h2 id="環境設定" class="relative group">環境設定 <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#%e7%92%b0%e5%a2%83%e8%a8%ad%e5%ae%9a" aria-label="定位點">#</a></span></h2><ul> <li><code>GOROOT</code>: GO 安裝的地方，用 <code>brew</code> 安裝的，可以設定 <code>/usr/local/opt/go/libexec</code> 就可以</li> <li><code>GOPATH</code>: GO 執行的時候要的路徑，看專案在哪邊就設定在哪邊</li> </ul> <h2 id="gopath" class="relative group">GOPATH <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#gopath" aria-label="定位點">#</a></span></h2><p>一般是指向專案位置，裡面還會切分三個目錄</p> <ul> <li>src: 一般程式碼放的地方，可以包含網址．比如說 github.com/golang/golint 這樣的方式</li> <li>pkg: 編譯後的檔案</li> <li>bin: binary file</li> </ul> <h2 id="empty-go" class="relative group">Empty Go <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#empty-go" aria-label="定位點">#</a></span></h2><div class="highlight"><div style="color:#e6edf3;background-color:#0d1117;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"> <table style="border-spacing:0;padding:0;margin:0;border:0;"><tr><td style="vertical-align:top;padding:0;margin:0;border:0;"> <pre tabindex="0" style="color:#e6edf3;background-color:#0d1117;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#737679">1 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#737679">2 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#737679">3 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#737679">4 </span><span style="white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#737679">5 </span></code></pre></td> <td style="vertical-align:top;padding:0;margin:0;border:0;;width:100%"> <pre tabindex="0" style="color:#e6edf3;background-color:#0d1117;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-golang" data-lang="golang"><span style="display:flex;"><span><span style="color:#ff7b72">package</span><span style="color:#6e7681"> </span>main<span style="color:#6e7681"> </span></span></span><span style="display:flex;"><span><span style="color:#6e7681"> </span></span></span><span style="display:flex;"><span><span style="color:#ff7b72">func</span><span style="color:#6e7681"> </span><span style="color:#d2a8ff;font-weight:bold">main</span>()<span style="color:#6e7681"> </span>{<span style="color:#6e7681"> </span></span></span><span style="display:flex;"><span><span style="color:#6e7681"> </span></span></span><span style="display:flex;"><span>}<span style="color:#6e7681"> </span></span></span></code></pre></td></tr></table> </div> </div><p>注意空行以及大括弧的位置，golang 很注意<strong>程式碼格式</strong>！</p>