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tables(mb = TRUE, order.col = "NAME", width = 80, env=parent.frame(), silent=FALSE)
data.table
, setkey
, ls
, objects
, object.size
DT = data.table(A=1:10,B=letters[1:10])
DT2 = data.table(A=1:10000,ColB=10000:1)
setkey(DT,B)
tables()
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