I tried to do this simple search but couldn't find anything on the percent (
time(x) %in% time(y)
Put quotes around it to find the help page. Either of these work
> help("%in%") > ?"%in%"
Once you get to the help page, you'll see that
‘%in%’ is currently defined as
‘"%in%" <- function(x, table) match(x, table, nomatch = 0) > 0’
time is a generic, I don't know what
time(X2) returns without knowing what
X2 is. But,
%in% tells you which items from the left hand side are also in the right hand side.
> c(1:5) %in% c(3:8)  FALSE FALSE TRUE TRUE TRUE
> intersect(c(1:5), c(3:8))  3 4 5