摘要: NSArray *values = @[@72, @78, @75, @70, @72, @73, @77, @78, @75, @70, @72, @73, @87, @78, @75, @70, @72]; NSNumber *avg = [values valueForKeyPath:@"@avg.self"]; NSNumber *sum = [values valueForKeyP... 阅读全文
posted @ 2019-11-13 15:32 走路蹩脚的火星人 阅读(410) 评论(0) 推荐(0)