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doc: Update cs.md #106 effa2500ed

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jaywcjlove
2022-11-17 05:05:27 +00:00
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@ -242,15 +242,15 @@
</span><span class="code-line">lengthOfString<span class="token punctuation">.</span><span class="token function">Contains</span><span class="token punctuation">(</span><span class="token string">"How"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// => true</span>
</span></code></pre>
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="频繁字符串拼接"><a aria-hidden="true" tabindex="-1" href="#频繁字符串拼接"><span class="icon icon-link"></span></a>频繁字符串拼接</h3><div class="wrap-body">
<pre class="wrap-text"><code class="language-cs code-highlight"><span class="code-line"><span class="token comment">// 对于频繁拼接字符串的场景（如：成百上千次循环）</span>
</span><span class="code-line"><span class="token comment">// 使用 System.Text.StringBuilder 提升性能</span>
</span><span class="code-line"><span class="token class-name"><span class="token keyword">var</span></span> sb <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token constructor-invocation class-name">StringBuilder</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<pre class="language-cs"><code class="language-cs code-highlight"><span class="code-line"><span class="token class-name"><span class="token keyword">var</span></span> sb <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token constructor-invocation class-name">StringBuilder</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name"><span class="token keyword">int</span></span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator">&#x3C;</span> <span class="token number">100</span><span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span>
</span><span class="code-line"><span class="token punctuation">{</span>
</span><span class="code-line"> sb<span class="token punctuation">.</span><span class="token function">Append</span><span class="token punctuation">(</span>i<span class="token punctuation">.</span><span class="token function">ToString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token punctuation">}</span>
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>sb<span class="token punctuation">.</span><span class="token function">ToString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// => 123456789....</span>
</span><span class="code-line">Console<span class="token punctuation">.</span><span class="token function">WriteLine</span><span class="token punctuation">(</span>sb<span class="token punctuation">.</span><span class="token function">ToString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</span><span class="code-line"><span class="token comment">// => 123456789....</span>
</span></code></pre>
<p class="wrap-text">对于频繁拼接字符串的场景（如：成百上千次循环），使用 <code>System.Text.StringBuilder</code> 提升性能</p>
<!--rehype:className=wrap-text-->
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="原始字符串文本"><a aria-hidden="true" tabindex="-1" href="#原始字符串文本"><span class="icon icon-link"></span></a>原始字符串文本</h3><div class="wrap-body">
<!--rehype:wrap-class=col-span-2-->