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CJ takes ... as first argument, and that function is going to be generic method, so AFAIK we will need to change it into CJ(x, ...), those changes can be made together #1090
+1 and I don't see the need for the names argument - this should be the only behavior. With the join syntax change to using "on" instead of setkey this has become a big sticking point for me.
I'd also like to see unique = TRUE be the default - I can't think of ever not needing to unique the arguments to CJ.
I frequently do
It would be nice if I could get away with writing
colA
andcolB
fewer times. The FR here is forto infer the names
colA
andcolB
, perhaps using whatever method is used by data.frame() and data.table() (make.names
?).(The name repetition could be reduced further if
on=.Icols
were a thing, I suppose, but I'll leave that for a separate FR.)SO posts to update...
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