weak情况
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@property (weak, nonatomic ) UILabel *nameLabel; UILabel *nameLabel = [[UILabel alloc] init]; self .nameLabel = nameLabel; |
strong情况
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@property (strong, nonatomic ) UILabel *timeLabel; - (UILabel *)timeLabel { if (!_timeLabel) { _timeLabel = [[UILabel alloc] init]; } return _timeLabel; } |