objective-c - Rust Cocoa - 如何制作 NSDictionary？

Question

我一直在阅读试图理解它。你可以在这里看到dictionaryWithObjects:objects一个对象和键的数组：

NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:objects
                                                       forKeys:keys
                                                         count:count];

https://developer.apple.com/documentation/foundation/nsdictionary#overview

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但initWithObjectsAndKeys_只有一个输入对象？‍♂️</p>

unsafe fn initWithObjectsAndKeys_(self, firstObject: *mut Object) -> *mut Object

https://docs.rs/cocoa/0.24.0/cocoa/foundation/trait.NSDictionary.html#tymethod.initWithObjectsAndKeys _

标签： objective-ccocoarustnsdictionary

Answer 1

许多 Rust 可可 API 是底层 Objective-C API 的直接包装器，例如 initWithObjectsAndKeys：https ://developer.apple.com/documentation/foundation/nsdictionary/1574190-initwithobjectsandkeys?language=objc 。调用者应将指针传递给以空结尾的数组的第一个元素，该数组包含字典的交替值和键元素。