Loading required package: knitr Loading required package: data.table ```r require(data.table) # print? DT = data.table(x=1:3, y=4:6) # no DT # yes ``` ``` ## x y ## 1: 1 4 ## 2: 2 5 ## 3: 3 6 ``` ```r DT[, z := 7:9] # no print(DT[, z := 10:12]) # yes ``` ``` ## x y z ## 1: 1 4 10 ## 2: 2 5 11 ## 3: 3 6 12 ``` ```r if (1 < 2) DT[, a := 1L] # no DT # yes ``` ``` ## x y z a ## 1: 1 4 10 1 ## 2: 2 5 11 1 ## 3: 3 6 12 1 ``` Some text.
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