git
GitHub
NULL
[[]]
$
@
slot()
dplyr::case_when
try()
suppressWarnings()
suppressMessages()
purrr
map_*()
map2_*()
walk()
imap()
pmap()
reduce()
map_df*()
pluck()
flatten()
NextMethod()
$print()
lubridate::period()
lobstr::ast():
recurse_call()
list2()
do.call
$new()
x <- Accumulator$new()
x$add(4) x$sum #> [1] 4