File: util.R

package info (click to toggle)
r-cran-itertools 0.1-3-3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye, forky, sid, trixie
  • size: 316 kB
  • sloc: makefile: 2
file content (13 lines) | stat: -rw-r--r-- 368 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
 
# This code was contributed by Hadley Wickham

end_iteration <- function() stop('StopIteration', call.=FALSE)

iteration_has_ended <- function(e) {
  identical(conditionMessage(e), 'StopIteration')
}

new_iterator <- function(nextElem, ...) {
  structure(list(nextElem=nextElem, ...), class=c('abstractiter', 'iter'))
}

is.iterator <- function(x) inherits(x, 'iter')