How to find different elements of two time vectors?

Question

Considering these two time vectors:

a<-seq(as.POSIXct(\"2010-01-01 05:00:00\"), as.POSIXct(\"2010-01-02 23:55:00\"), by = \'5 min\')
b<-seq(as.POSIXct(         


        

Answer 1

This uses only operations that preserve "POSIXct" class:

c(a[!a %in% b], b[!b %in% a])