Objective-C深拷贝
时间: 2023-02-23 22:27:41 浏览: 50
Objective-C 中的深拷贝是指在复制一个对象时,不仅复制其值,还复制其内存地址。因此,在修改拷贝后的对象时不会影响原始对象,反之亦然。
在 Objective-C 中实现深拷贝通常有以下几种方法:
1. 实现 NSCopying 协议:对于自定义的对象,可以通过实现 NSCopying 协议来实现深拷贝。
2. 使用 NSKeyedArchiver:可以使用 NSKeyedArchiver 类来将对象进行归档和反归档,从而实现深拷贝。
3. 使用 copyWithZone:如果实现了 NSCopying 协议,还可以通过重写 copyWithZone 方法来实现更灵活的深拷贝。
这些方法的具体实现取决于需要进行深拷贝的对象的类型和需求。
相关问题
Objective-C
Objective-C is a high-level, object-oriented programming language that was developed in the early 1980s. It is primarily used for developing applications for Apple's macOS and iOS operating systems. Objective-C is an extension of the C programming language and adds support for object-oriented programming features such as classes, methods, and inheritance.
Objective-C was originally developed by Brad Cox and Tom Love at Stepstone Corporation. It was later acquired by NeXT Computer, where it was used as the primary programming language for the NeXTSTEP operating system. When NeXT was acquired by Apple in 1997, Objective-C became the primary language for developing applications for macOS and iOS.
Objective-C is known for its dynamic runtime system, which allows for features such as method swizzling and dynamic class loading. It also supports a message-passing syntax, which allows objects to communicate with each other in a highly dynamic way.
In recent years, Objective-C has been largely supplanted by Apple's newer programming language, Swift. However, Objective-C is still widely used in legacy code and in certain specialized applications.
objective-c 集成 lua
Objective-C 与 Lua 的集成可以通过使用 LuaBridge 或 LuaObjc 库来实现。这两个库都是开源的,可以在 GitHub 上找到它们的代码。
LuaBridge 是一个将 Lua 和 C++ 集成的库,但是它也支持 Objective-C。它提供了一些 C++ 类和函数,可以帮助你将 Lua 代码与 Objective-C 对象之间进行交互。你可以在 Objective-C 中创建 LuaBridge 对象,然后使用它来加载 Lua 脚本,并将 Objective-C 对象传递给 Lua 脚本。Lua 脚本可以调用 Objective-C 对象的方法,并获取和设置其属性。
LuaObjc 是另一个库,它专门用于将 Lua 和 Objective-C 集成。它提供了 Objective-C 类和函数,可以帮助你在 Objective-C 中加载 Lua 脚本,并将 Objective-C 对象传递给 Lua 脚本。Lua 脚本可以调用 Objective-C 对象的方法,并获取和设置其属性。
无论你选择哪个库,都需要先将库的源代码添加到你的项目中,并在代码中包含相应的头文件。然后,你可以创建 LuaBridge 或 LuaObjc 对象,并使用它们来加载 Lua 脚本和与 Objective-C 对象交互。