System clipboard support in IdeaVim

ideavimrc

nnoremap yy "+yy
vnoremap y "+y

nnoremap p "+p
vnoremap p "+p
nnoremap P "+P
vnoremap P "+P

I add these two lines:
nnoremap dd "+dd
vnoremap d "+d

$ cat ~/.ideavimrc

set clipboard+=unnamed

I was fiddling with these settings and noticed a difference between the way above, and the set clipboard+=unnamed way. The latter will make it so all yank operations yank to system clipboard, including x/X. For me, that's undesirable, because I don't want single characters copied to the system keyboard one at a time (as with x, without a selection). But doing the remaps for p/y/d and related, were exactly what I was looking for.

Both ways are valid, just depends on what you're after