Importing Generic Function from Other Package: A Tip on Writing a R Package

January 30, 2009

(This article was first published on Yu-Sung Su's Blog, and kindly contributed to R-bloggers)

I did not know this and had to spend the whole week to figure out what’s wrong with my code. I was updating the mi package. While I was doing code checking procedure, I always got a error message that I did not know what was going on. I remember last time when I encountered this, I just reduced the package dependency or simply don’t use the S4 language. Anyway, here is the problem:mi is

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