objective-c - ARC 强属性枚举错误

Question

我有以下代码，但在编译前遇到此错误:

Fast Enumeration Variables can't be modified in ARC by default, declare the variable _strong to allow this

for (NSString *name in array){
        @try {
            S3ObjectController *localS3 = [[S3ObjectController alloc]init];
            name = localS3.stringProperty;
}

在这个 S3ObjectController 类中，我声明了如下属性:

@property (nonatomic, strong)  NSString *stringProperty;

我应该如何更改属性？我以为我在宣布它很强大？

Answer 1

这意味着声明快速枚举变量 strong，而不是你的实例变量:

for (NSString __strong *name in array) {
    @try {
        S3ObjectController *localS3 = [[S3ObjectController alloc]init];
        name = localS3.stringProperty;
    }
}