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EsReich's questions

Martin Hope
EsReich
Asked: 2022-07-20 20:28:09 +0000 UTC
  • 1

有一个代码示例：

//объявляем ссылку
SomeClass someClass;
//в зависимости от условий инициализируем ссылку тем или иным образом
if (condition1) {
  someClass = value1;
} else {
  someClass = value2;
}

我发现这是“脏代码”，应该尽可能地声明不可变变量：

final SomeClass someClass = someValue;

为什么第一个例子不好，支持第二个的论点是什么？

java code-style
Martin Hope
EsReich
Asked: 2022-03-31 17:05:34 +0000 UTC
  • 0

我正在尝试进行简单的聊天，这是一张引导卡。消息应该出现在卡片正文中。问题是当有很多帖子时，卡体只是超出了父元素。我希望有一个滚动条。如何达到这样的效果？

Шаблон страницы: 
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
    <title>User page</title>

    <style>
        body {
            display: flex;
            flex-direction: column;
            height:100vh;
            margin: 0;
            padding: 0;
        }
    </style>

</head>
<body>

         <h1>General chat</h1>

         <br>

         <div class="card">
             <h3 class="card-header">Here you will see messages from all users</h3>
             <div class="card-body">
                 <div class="card" style="height: 390px; border-radius: 15px; background-color: rgba(0,0,0,0.08);">
                     <div class="card-body">
                        <!--Сообщения здесь-->                           
                     </div>
                     <div class="card-footer">
                         <form id="msgForm">
                             <div class="input-group">
                                 <textarea class="form-control" placeholder="Type your message..." rows="1">
                                 </textarea>

                                 <button type="submit" class="input-group-addon btn btn-primary" id="msgBtn">
                                     Send
                                 </button>
                                 </textarea>
                             </div>
                         </form>
                     </div>
                 </div>
             </div>
         </div>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW" crossorigin="anonymous"></script>
<script type="text/javascript" src="../static/userScript.js"></script>

</body>
</html>
html