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2024-08-13 00:15:53 +00:00
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commit 24eb7f8fea
159 changed files with 2739 additions and 2739 deletions
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ch7/ch7-11.html
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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>基于类型断言识别错误类型 - 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>7.11. 基于类型断言区别错误类型</h2>
<p>思考在os包中文件操作返回的错误集合。I/O可以因为任何数量的原因失败，但是有三种经常的错误必须进行不同的处理：文件已经存在（对于创建操作），找不到文件（对于读取操作），和权限拒绝。os包中提供了三个帮助函数来对给定的错误值表示的失败进行分类：</p>
@@ -640,10 +640,10 @@ fmt.Println(os.IsNotExist(err)) // &quot;true&quot;
<script type="text/javascript">
window.playground_copyable = true;
</script>
<script src="../static/mnbook/mark.min.js" type="text/javascript" charset="utf-8"></script>
<script src="../static/mnbook/clipboard.min.js" type="text/javascript" charset="utf-8"></script>
<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/ch7-11.md"
@@ -651,7 +651,7 @@ fmt.Println(os.IsNotExist(err)) // &quot;true&quot;
<!-- 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>