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@@ -1,7 +1,7 @@
<!DOCTYPE HTML>
<html lang="zh" class="sidebar-visible no-js light">
<head>
<!-- Book generated using https://github.com/wa-lang/mnbook -->
<!-- Book generated using https://github.com/wa-lang/wabook -->
<meta charset="UTF-8">
<title>补充几点 - Go语言圣经</title>
<!-- Custom HTML head -->
@@ -12,17 +12,17 @@
<link rel="icon" href="../favicon.svg">
<link rel="shortcut icon" href="../favicon.png">
<link rel="stylesheet" href="../static/mnbook/css/variables.css">
<link rel="stylesheet" href="../static/mnbook/css/general.css">
<link rel="stylesheet" href="../static/mnbook/css/chrome.css">
<link rel="stylesheet" href="../static/mnbook/css/print.css" media="print">
<link rel="stylesheet" href="../static/wabook/css/variables.css">
<link rel="stylesheet" href="../static/wabook/css/general.css">
<link rel="stylesheet" href="../static/wabook/css/chrome.css">
<link rel="stylesheet" href="../static/wabook/css/print.css" media="print">
<!-- Fonts -->
<link rel="stylesheet" href="../static/mnbook/FontAwesome/css/font-awesome.css">
<link rel="stylesheet" href="../static/mnbook/fonts/fonts.css">
<link rel="stylesheet" href="../static/wabook/FontAwesome/css/font-awesome.css">
<link rel="stylesheet" href="../static/wabook/fonts/fonts.css">
<!-- Highlight.js Stylesheets -->
<link rel="stylesheet" href="../static/mnbook/highlight.css">
<link rel="stylesheet" href="../static/mnbook/tomorrow-night.css">
<link rel="stylesheet" href="../static/mnbook/ayu-highlight.css">
<link rel="stylesheet" href="../static/wabook/highlight.css">
<link rel="stylesheet" href="../static/wabook/tomorrow-night.css">
<link rel="stylesheet" href="../static/wabook/ayu-highlight.css">
<!-- Custom theme stylesheets -->
</head>
@@ -36,15 +36,15 @@
<!-- Work around some values being stored in localStorage wrapped in quotes -->
<script type="text/javascript">
try {
var theme = localStorage.getItem('mnbook-theme');
var sidebar = localStorage.getItem('mnbook-sidebar');
var theme = localStorage.getItem('wabook-theme');
var sidebar = localStorage.getItem('wabook-sidebar');
if (theme.startsWith('"') && theme.endsWith('"')) {
localStorage.setItem('mnbook-theme', theme.slice(1, theme.length - 1));
localStorage.setItem('wabook-theme', theme.slice(1, theme.length - 1));
}
if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
localStorage.setItem('mnbook-sidebar', sidebar.slice(1, sidebar.length - 1));
localStorage.setItem('wabook-sidebar', sidebar.slice(1, sidebar.length - 1));
}
} catch (e) { }
</script>
@@ -52,7 +52,7 @@
<!-- Set the theme before any content is loaded, prevents flash -->
<script type="text/javascript">
var theme;
try { theme = localStorage.getItem('mnbook-theme'); } catch(e) { }
try { theme = localStorage.getItem('wabook-theme'); } catch(e) { }
if (theme === null || theme === undefined) { theme = default_theme; }
var html = document.querySelector('html');
html.classList.remove('no-js')
@@ -66,7 +66,7 @@
var html = document.querySelector('html');
var sidebar = 'hidden';
if (document.body.clientWidth >= 1080) {
try { sidebar = localStorage.getItem('mnbook-sidebar'); } catch(e) { }
try { sidebar = localStorage.getItem('wabook-sidebar'); } catch(e) { }
sidebar = sidebar || 'visible';
}
html.classList.remove('sidebar-visible');
@@ -528,7 +528,7 @@
<div class="sidetoc"><nav class="pagetoc"></nav></div>
<main>
<ul dir="auto"><li><em>凹语言(Go实现, 面向WASM设计): <a href="https://github.com/wa-lang/wa">https://github.com/wa-lang/wa</a></em></li><li><em>MnBook(Go语言实现的MD电子书构建工具): <a href="https://github.com/wa-lang/mnbook">https://github.com/wa-lang/mnbook</a></em></li></ul><hr>
<ul dir="auto"><li><em>凹语言(Go实现, 面向WASM设计): <a href="https://github.com/wa-lang/wa">https://github.com/wa-lang/wa</a></em></li><li><em>WaBook(Go语言实现的MD电子书构建工具): <a href="https://github.com/wa-lang/wabook">https://github.com/wa-lang/wabook</a></em></li></ul><hr>
<h2>7.15. 一些建议</h2>
<p>当设计一个新的包时，新手Go程序员总是先创建一套接口，然后再定义一些满足它们的具体类型。这种方式的结果就是有很多的接口，它们中的每一个仅只有一个实现。不要再这么做了。这种接口是不必要的抽象；它们也有一个运行时损耗。你可以使用导出机制（§6.6）来限制一个类型的方法或一个结构体的字段是否在包外可见。接口只有当有两个或两个以上的具体类型必须以相同的方式进行处理时才需要。</p>
@@ -586,10 +586,10 @@
<script type="text/javascript">
window.playground_copyable = true;
</script>
<script src="../static/mnbook/mark.min.js" type="text/javascript" charset="utf-8"></script>
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<script src="../static/mnbook/highlight.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/mnbook/book.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/wabook/mark.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/wabook/clipboard.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/wabook/highlight.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/wabook/book.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
var pagePath = "ch7/ch7-15.md"
@@ -597,7 +597,7 @@
<!-- Custom JS scripts -->
<script src="../static/mnbook/giscus.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/wabook/giscus.js" type="text/javascript" charset="utf-8"></script>
</body>