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
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