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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <meta name="generator" content= "HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org"> <title>C++ Containers</title> <link href="cppreference.css" rel="stylesheet" type="text/css"></head><body><table> <tr> <td> <div class="body-content"> <div class="header-box"> <a href="index.html">cppreference.com</a> > Containers </div> <h1>C++ Containers</h1>The C++ Containers (vectors, lists, etc.) are generic vessels capable of holding many different types of data. For example, the following statement creates a <a href= "cppvector/index.html">vector</a> of integers: <pre>vector<int> v;</pre>Containers can hold standard objects (like the<strong>int</strong> in the above example) as well as custom objects,as long as the objects in the container meet a few requirements: <ul> <li>The object must have a default constructor,</li> <li>an accessible destructor, and</li> <li>an accessible assignment operator.</li> </ul>When describing the functions associated with these various containers, this website defines the word <strong>TYPE</strong> to be the object type that the container holds. For example, in the above statement, <strong>TYPE</strong> would be <strong>int</strong>. Similarily, when referring to containers associated with pairs of data (<a href="cppmap/index.html">map</a> for example) <strong>key_type</strong> and <strong>value_type</strong> are used to refer to the key and value types for that container. </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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