doc: docs/cs.md (#316) b1a10ee797

docs/cs.html

@@ -31,7 +31,7 @@
 <p>提供基本语法和方法的 C# 快速参考备忘单</p>
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+</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#hellocs">Hello.cs</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#变量">变量</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#注释">注释</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串">字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#用户输入">用户输入</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件判断">条件判断</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#数组">数组</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#循环">循环</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-数据类型">C# 数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始数据类型">原始数据类型</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#基本数据类型">基本数据类型</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#c-字符串">C# 字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串连接">字符串连接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串插值">字符串插值</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串成员">字符串成员</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逐字字符串">逐字字符串</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#成员示例">成员示例</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#频繁字符串拼接">频繁字符串拼接</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#原始字符串文本">原始字符串文本</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#字符串操作">字符串操作</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#逻辑运算">逻辑运算</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#杂项">杂项</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#常用-net-概念">常用 .NET 概念</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
 </div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="hellocs"><a aria-hidden="true" tabindex="-1" href="#hellocs"><span class="icon icon-link"></span></a>Hello.cs</h3><div class="wrap-body">
 <pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token keyword">class</span> <span class="token class-name">Hello</span> <span class="token punctuation">{</span>
 </span><span class="code-line">  <span class="token comment">// main method</span>
@@ -369,6 +369,113 @@
 </span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>Rep<span class="token punctuation">)</span><span class="token punctuation">;</span>
 </span><span class="code-line"><span class="token comment">//会把字符中的 “1”替换成“串”</span>
 </span></code></pre>
+</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="逻辑运算"><a aria-hidden="true" tabindex="-1" href="#逻辑运算"><span class="icon icon-link"></span></a>逻辑运算</h3><div class="wrap-body">
+<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token comment">//或运算, 与运算, 非运算</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> A <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> B <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> Or <span class="token operator">=</span> A <span class="token operator">||</span> B<span class="token punctuation">;</span> <span class="token comment">// = A | B</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> And <span class="token operator">=</span> A <span class="token operator">&#x26;&#x26;</span> B<span class="token punctuation">;</span> <span class="token comment">// = A &#x26; B</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> Not <span class="token operator">=</span> <span class="token operator">!</span>A<span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token comment">// ||,&#x26;&#x26; 与 |,&#x26; 分别为逻辑运算和条件逻辑运算, 两者的区别在于, 前者仅在必要时才会计算右侧的值, 后者始终计算右侧的值. 例如:</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> C <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> D <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token return-type class-name"><span class="token keyword">bool</span></span> <span class="token function">CalcD</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
+</span><span class="code-line">  D <span class="token operator">=</span> <span class="token operator">!</span>D<span class="token punctuation">;</span>
+</span><span class="code-line">  <span class="token keyword">return</span> D<span class="token punctuation">;</span>
+</span><span class="code-line"><span class="token punctuation">}</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> E <span class="token operator">=</span> C <span class="token operator">&#x26;&#x26;</span> <span class="token function">CalcD</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// C: false, D: false, E: false</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> F <span class="token operator">=</span> C <span class="token operator">&#x26;</span> <span class="token function">CalcD</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// C:false, D: true, F: false</span>
+</span><span class="code-line"><span class="token comment">// 两种运算方法稍有不同, 计算结果始终相同, 但第二种可能造成其他影响.</span>
+</span><span class="code-line"><span class="token comment">//异或运算</span>
+</span><span class="code-line"><span class="token class-name"><span class="token keyword">bool</span></span> Xor <span class="token operator">=</span> A <span class="token operator">^</span> B<span class="token punctuation">;</span>
+</span></code></pre>
+<p>C#中的逻辑运算支持可空布尔类型运算. 注意条件逻辑运算不支持可空布尔类型.</p>
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+<table><thead><tr><th align="left">x</th><th>y</th><th>x&#x26;y</th><th>x|y</th><th>x^y</th><th>!x</th></tr></thead><tbody><tr><td align="left">true</td><td>true</td><td>true</td><td>true</td><td>false</td><td>false</td></tr><tr><td align="left">true</td><td>false</td><td>false</td><td>true</td><td>true</td><td>false</td></tr><tr><td align="left">true</td><td>null</td><td>null</td><td>true</td><td>null</td><td>false</td></tr><tr><td align="left">false</td><td>true</td><td>false</td><td>true</td><td>true</td><td>true</td></tr><tr><td align="left">false</td><td>false</td><td>false</td><td>false</td><td>false</td><td>true</td></tr><tr><td align="left">false</td><td>null</td><td>false</td><td>null</td><td>null</td><td>true</td></tr><tr><td align="left">null</td><td>true</td><td>null</td><td>true</td><td>null</td><td>null</td></tr><tr><td align="left">null</td><td>false</td><td>false</td><td>null</td><td>null</td><td>null</td></tr><tr><td align="left">null</td><td>null</td><td>null</td><td>null</td><td>null</td><td>null</td></tr></tbody></table>
 </div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="杂项"><a aria-hidden="true" tabindex="-1" href="#杂项"><span class="icon icon-link"></span></a>杂项</h2><div class="wrap-body">
 </div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist col-span-3"><div class="wrap-header h3wrap"><h3 id="常用-net-概念"><a aria-hidden="true" tabindex="-1" href="#常用-net-概念"><span class="icon icon-link"></span></a>常用 .NET 概念</h3><div class="wrap-body">
 <!--rehype:wrap-class=col-span-3-->