今天Ripley在回答一个问题时提到"Jackson's Rules of Optimization",这两条规则是: 1) Don't do it. 2) (For experts only) Don't do it yet. 谢益辉 / 2008-10-16 Published under (CC) BY-NC-SA in categories R language tagged with Brian Ripley R-help 代码优化 Please enable JavaScript to view the comments powered by Disqus.