都是“核心（基础、数据、图形等）”吗？用类似 C 的语法编写？
我相信这个问题本身就说明了问题，而且我知道对于你们中的许多人来说，这个问题可能看起来很迟钝。我只是想知道 Objective-C 中以 Core 开头的所有内容是否都是用普通的 C 编写的。
我的猜测是“是的，是的。”，但我想 100% 确定；）
非常感谢。
编辑：查看答案，我现在意识到我应该询问 Core 库中的语法。
它是否总是类似于 C 语法：void myFunction(int num); 而不是 - (void) myFunction:(int) path;？
到目前为止，在 Obj-C 中我不太喜欢的一件事是混合 ()/dot/->;语法与 [] 语法。我觉得确实不太优雅...
I believe the question speaks for itself, and I know that to many of you this question might seem retarded. I just wonder if everything, in Objective-C, that starts with Core is written in a plain C.
My guess is "Yes, it is.", but I want to be sure for 100% ;)
Many thanks.
EDIT: Looking at the answers I now realise I should have asked about the syntax in Core libraries.
Is it always C like syntax: void myFunction(int num); and not - (void) myFunction:(int) path;?
So far one thing that I am not too fond of, in Obj-C, is mixing ()/dot/-> syntax with [] syntax. I think it really isn't elegant...
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无意冒犯，但正确的答案是“谁在乎”？ （开玩笑）
不过，老实说，任何系统库都可以用几乎任何他们想要的方式编写。可能是 Objective-C、C、C++ 和汇编程序的组合；可能性较小（但技术上仍然可行）的选项包括 Pascal、Fortran、LOGO 或手工组装的机器代码。
如果您想要系统库中代码组合的示例，请查看开源 Java 库。您将看到
java.*包是用 Java 和 C 的组合编写的；某些端口可能包括零件组装。只要接口与 Objective-C 兼容，这就是您真正需要担心的。
此外，唯一能回答这个问题的人可能是苹果公司的人，而且可能不被允许告诉你。
No offense, but the proper answer is "who cares"? (insert tongue in cheek)
Honestly, though, any system libraries can be written in pretty much whatever they want. There's probably a combination of Objective-C, C, C++, and assembler; less likely (but technically still possible) options include Pascal, Fortran, LOGO, or hand-assembled machine code.
If you want an example of the combinations of code in system libraries, take a look at the open-sourced Java libraries. You will see that the
java.*packages are written in a combination of Java and C; some ports may include assembly for parts.As long as the interface is Objective-C compatible, that's all you really need to worry about.
Also, the only people who can answer that are probably at Apple, and probably aren't allowed to tell you.
它是用“无论如何”编写的（一点 ObjC，很多 C，一点 asm），但关键是它呈现的接口是纯 C 的。
我会注意到 Core Data 和 Core Image 呈现 ObjC 接口尽管。
It's written in "whatever" (a bit of ObjC, a lot of C, a bit of asm), but the key thing is that the interface it presents is pure C.
I'll note that Core Data and Core Image present ObjC interfaces though.
是的，Appkit / UIKit 是建立在其之上的，他们做了一些技巧来使 ObjC 和 Core* 之间的交互非常高效（称为“免费桥接”）
Yep it is - Appkit / UIKit is built on top of that, and they've done some tricks to make the interaction between ObjC and Core* to be very efficient (called "Toll-free Bridging")
毕竟它是 Objective-C；该语言是直接 C 之上的一个非常小的语法层，带有运行时库来提供动态行为。
混合 C 和 Objective-C 是环境中经常遇到且自然的一部分。
正如其他人所说，用于实现各种 Core* 框架的语言是一个通常不应该关心的实现细节。话虽如此，CoreFoundation 的很大一部分是用 Objective-C 编写的，而且还在不断增长。
It is Objective-C after all; the language is a very small layer of syntax on top of straight C with a runtime library to provide the dynamic behaviors.
Mixing C and Objective-C is a very oft encountered and natural part of the environment.
As others have said, the languages used to implement the various Core* frameworks is an implementation detail that should generally be of no concern. With that said, a good sized and growing chunk of CoreFoundation is written in Objective-C.