Java包与C ++库 [英] Java packages vs. C++ libraries

问题描述

在 Java 中，有一个名为的包。 C ++ 中的库表示相同的含义，尤其是在包含相关类和受保护成员的使用方面？

In Java, there is what is called package. Does library in C++ represent the same meaning, especially in terms for example of containg relative classes and the use of protected members?

谢谢。

推荐答案

有什么不同的维度 package 表示Java。作为一个容器，它区分内部类的名称和其他包中的类的名称，它的等价物将是c ++ 名称空间。

There are different dimensions of what a package means in Java. As a container that differentiates the names of the classes inside from the names of classes in other packages, its equivalent would be c++ namespaces.

作为一个保证访问同一块中的类的非私有成员的单元，C ++中没有等价物。授予类的访问级别与定义类的命名空间无关。

As a unit that guarantees access to non-private members to classes in the same block, there is no equivalent in C++. The access level granted to a class is independent of the namespace where the class is defined.

作为一种在磁盘中对源进行排序的方法，没有等效的， C ++语言对代码如何存储在文件中没有要求。

As a way of ordering your sources in the disk, there is no equivalent, the C++ language has no requirements on how the code is stored in files.

关于c ++库，它更接近 jar Java中的文件。它们捆绑了不同的类，这些类具有某种关jar可以包含多个包，并且多个jar可以包含来自同一包的类。与库类似，它们可以包含来自不同命名空间的类和/或不同的库可以包含来自同一命名空间的类。

Regarding c++ libraries, that is closer to jar files in Java. They bundle different classes that share some relation. A jar can contain more than one package, and more than one jar can contain classes from the same package. Similarly with libraries, they can contain classes from different namespaces and/or different libraries can contain classes from the same namespace.

这篇关于Java包与C ++库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！