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diff --git a/2025/03/14/DDD-中的-Ubiquitous-Languages/index.html b/2025/03/14/DDD-中的-Ubiquitous-Languages/index.html index 3f99a42a..d72575f9 100644 --- a/2025/03/14/DDD-中的-Ubiquitous-Languages/index.html +++ b/2025/03/14/DDD-中的-Ubiquitous-Languages/index.html @@ -209,7 +209,6 @@ </ol> <p>假设正在开发一个电子商务系统，业务专家使用“订单”来描述用户购买的商品集合。团队可以在代码中使用“Order”来命名相关的类和方法：</p> <figure class="highlight fsharp"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">type</span> <span class="title class_">Order</span> <span class="operator">=</span> {</span><br><span class="line"> items<span class="operator">:</span> OrderItem <span class="type">list</span></span><br><span class="line"> customer<span class="operator">:</span> Customer</span><br><span class="line"> orderDate<span class="operator">:</span> DateTime</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">type</span> <span class="title class_">OrderItem</span> <span class="operator">=</span> {</span><br><span class="line"> product<span class="operator">:</span> Product</span><br><span class="line"> quantity<span class="operator">:</span> <span class="type">int</span></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">type</span> <span class="title class_">Customer</span> <span class="operator">=</span> {</span><br><span class="line"> name<span class="operator">:</span> <span class="type">string</span></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">type</span> <span class="title class_">Product</span> <span class="operator">=</span> {</span><br><span class="line"> name<span class="operator">:</span> <span class="type">string</span></span><br><span class="line"> price<span class="operator">:</span> <span class="type">float</span></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> addItem (order<span class="operator">:</span> Order) (item<span class="operator">:</span> OrderItem) <span class="operator">=</span></span><br><span class="line"> { order <span class="keyword">with</span> items <span class="operator">=</span> order.items <span class="operator">@</span> [item] }</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> getTotalAmount (order<span class="operator">:</span> Order) <span class="operator">=</span></span><br><span class="line"> <span class="keyword">let</span> total <span class="operator">=</span> <span class="number">0.0</span></span><br><span class="line"> <span class="keyword">for</span> item <span class="keyword">in</span> order.items <span class="keyword">do</span></span><br><span class="line"> total <span class="operator"><-</span> total <span class="operator">+</span> item.price</span><br><span class="line"> total</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> getPrice (item<span class="operator">:</span> OrderItem) <span class="operator">=</span></span><br><span class="line"> item.product.price <span class="operator">*</span> item.quantity</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> getTotalPrice (order<span class="operator">:</span> Order) <span class="operator">=</span></span><br><span class="line"> <span class="keyword">let</span> total <span class="operator">=</span> <span class="number">0.0</span></span><br><span class="line"> <span class="keyword">for</span> item <span class="keyword">in</span> order.items <span class="keyword">do</span></span><br><span class="line"> total <span class="operator"><-</span> total <span class="operator">+</span> getPrice(item)</span><br><span class="line"> total</span><br></pre></td></tr></table></figure> - <p>在这个示例中使用了“Order”、“OrderItem”、“Customer”和“Product”等术语，这些术语都是 Ubiquitous Language 的一部分，可以提高代码与业务需求的一致性。</p> </div> |