Created
September 13, 2022 17:44
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| DT = data.table(A=c("Peter Parker", "Bruce Wayne", "Barry Allen", "Diana", "Clark Kent"), | |
| B=c("Spiderman", "Batman", "Flash", "Wonderwoman", "Superman"), | |
| C=c("Dr. Octopus", "Joker", "Magenta", "Baroness Paula von Gunther", "Lex Luthor")) | |
| d1 <- copy(DT) | |
| d2 <- copy(DT) | |
| d3 <- copy(DT) | |
| setorder(d1, A) |
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