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iOS 开发实用技术导航
NSHipster 中文版
› http://nshipster.cn/
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WWDC
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Design Guides and Resources
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This topic created in 4393 days ago, the information mentioned may be changed or developed.
不好意思，找到错误了...@Livid 不好意思，删掉下
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laihj Apr 16, 2014
NSString *string;
改成： NSString *string = [NSString string];或NSString *string = @“”； 调用[string stringByAppendingFormat:@"%@ + %@",string1, string2];时保证string不是null |
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3
qq2511296 Apr 16, 2014
目测楼主也刚开始学iOS
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4
alexrezit Apr 16, 2014  1
nil
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5
cielpy Apr 16, 2014 1
跟以前声明数据只声明不初始化一样。。
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7
oppressed6370 Apr 26, 2014
@Linxing me too我也是啊
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