sayHello(str:string=null)
接口也要写成
sayHello(str:string=null);
关键问题在于你要给函数参与默认值null,接口也要写上赋值
posted on 2009-07-04 16:25 jiahuafu 阅读(294) 评论(0) 编辑 收藏 举报
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