Dear expeRts, Now i want to know how to implement an Unary operator like i++ in cpp's synax form. e.g. 2++ will let 2 be 3 , a<-2 ,a++ ,will let a be 3 I tried this : '%++%'<-function(x){ x<<-x+1 } but it have problem, the biggest one is it seems the function need two params like a%++%b , how to write a function needing just one param?
TKS ! -- PO SU mail: desolato...@163.com Majored in Statistics from SJTU ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.