From: ronggui <042045003_at_fudan.edu.cn>

Date: Sun 23 Oct 2005 - 19:15:57 EST

Deparment of Sociology

Fudan University

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Oct 23 19:33:33 2005

Date: Sun 23 Oct 2005 - 19:15:57 EST

The green book tells:"The basic technique is classic :keep it simple ."A long ,complicated expression or function is less fravorable than" a relatively small computations that combines calls to a few other functions to perform its tasks."

But I don't get the point totally.Can anyone give me an example to make me understand this rules totally?

ps:

Is it mean that f1 is better than f2? Thank you!

f1<-function(x){

n<-length(x) s<-sum(x) m<-s/n}

f2<-

function(x){

m<-sum(x)/length(x)}

2005-10-23

Deparment of Sociology

Fudan University

My new mail addres is ronggui.huang@gmail.com Blog:http://sociology.yculblog.com

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Oct 23 19:33:33 2005

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