ios-18 3 iOS 18 NSAttributedString attributes Range 合併行為改變|Equatable 影響解析與閃退問題排除 Sep 20, 2024 iOS 18 NSAttributedString attributes Range 合并行为改变|Equatable 影响解析与闪退问题排除 Sep 20, 2024 iOS 18 NSAttributedString Attributes Range Merging|Equatable Behavior Change Explained Sep 20, 2024