目标 C 布尔数组 [英] Objective C Boolean Array
问题描述
我需要在 Objective-c 中使用一组布尔值.我已经完成了大部分设置,但是编译器会在以下语句中发出警告:
I need to utilize an array of booleans in objective-c. I've got it mostly set up, but the compiler throws a warning at the following statement:
[updated_users replaceObjectAtIndex:index withObject:YES];
这是,我敢肯定,因为 YES 根本不是一个对象;这是一个原始的.无论如何,我需要这样做,并且非常感谢有关如何完成它的建议.
This is, I'm sure, because YES is simply not an object; it's a primitive. Regardless, I need to do this, and would greatly appreciate advice on how to accomplish it.
谢谢.
推荐答案
是的,就是这样:NS* 容器只能存储 Objective-C 对象,不能存储原始类型.
Yep, that's exactly what it is: the NS* containers can only store objective-C objects, not primitive types.
您应该能够通过将其包装在 NSNumber 中来完成您想要的:
You should be able to accomplish what you want by wrapping it up in an NSNumber:
[updated_users replaceObjectAtIndex:index withObject:[NSNumber numberWithBool:YES]]
或使用 @(YES)
将 BOOL
包装在 NSNumber
or by using @(YES)
which wraps a BOOL
in an NSNumber
[updated_users replaceObjectAtIndex:index withObject:@(YES)]]
然后你可以拉出 boolValue:
You can then pull out the boolValue:
BOOL mine = [[updated_users objectAtIndex:index] boolValue];
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