Something I see fairly often in R code is heavy use of 'return',
like this example today:
> decision <- function(a, b) {
+ if (a == 1 || b == 1) return(1)
+ if (a == 2 || b == 2) return(2)
+ if (a == 3 || b == 3) return(3)
+ if (a == 4 || b == 4) return(4)
+ NA
+ }
Why do people write code like that instead of
decision <- function (a,b) {
if (a == 1 || b == 1) 1 else
if (a == 2 || b == 2) 2 else
if (a == 3 || b == 3) 3 else
if (a == 4 || b == 4) 4 else
NA
}
> mapply(decision, qs2, qs9)
[1] 2 1 1 3 4 3 1 1 1 4 1 2 3 1 4 3 1 2 2 3
In this case, what's wrong with pmin(qs2, qs9)?
______________________________________________
[EMAIL PROTECTED] mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help
