arrange(iris, Sepal.Length)
last(1234)
data.table::last()

123 %like% 123
lapply(1, FUN = CJ)
lapply(1, FUN = purrr::walk)
purrr::map(jksa)
purrr::map
map()
base::`sum`(1:3)
base::"mean"(1:3)
`sum`(1:3)
"sum"(1:3)
dt[, ":="(x = 3)]
dt[, `:=`(x = 3)]

testthat::takes_less_than()
