To reference or cite the objects present in the Software Heritage archive, permalinks based on SoftWare Hash IDentifiers (SWHIDs) must be used. Select below a type of object currently browsed in order to display its associated SWHID and permalink.
swh:1:cnt:f0b37f9a410cdb2cc308c15fc8abfa19552da12c
swh:1:dir:192328c030720f39beba2761f81eb7497b68d049
swh:1:rev:ebb4d406af6a7168582caf0094830bc559b472a7
swh:1:snp:cadb242f1f2b536450c3e647ffb173ab4a173342
isTRUE <- function(x) { is.logical(x) && length(x) == 1L && !is.na(x) && x } isFALSE <- function(x) { is.logical(x) && length(x) == 1L && !is.na(x) && !x }