| testanclaw |
| 1 | install.packages('tidyr') |
| 2 | library(tidyr) |
| 3 | update.packages() |
| 4 | c(1,4,4,3,2,2,3) |
| 5 | v[c(2,3,4)] v[2:4] v[c(2,4,3)] |
| 6 | data[1,3] |
| 7 | data[1,"size"] |
| 8 | data[1:2, ] |
| 9 | data[c(1,2), ] |
| 10 | data[1:2, 2] |
| 11 | data[c(1,2), 2] |
| 12 | data[1:2, c("sex","size")] |
| 13 | data[c(1,2), c(2,3)] |
| 14 | v[-1] |
| 15 | v[-1:-3] |
| 16 | v[-length(v)] |
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