
Unlistable Lists
is_unlistable.RdA (nested) list with atomic objects in all final nodes of the list-tree is unlistable - checked with is_unlistable.
Arguments
- l
a list.
- DF.as.list
logical.
TRUEtreats data frames like (sub-)lists;FALSElike atomic elements.
Details
is_unlistable with DF.as.list = TRUE is defined as all(rapply(l, is.atomic)), whereas DF.as.list = FALSE yields checking using all(unlist(rapply2d(l, function(x) is.atomic(x) || is.list(x)), use.names = FALSE)), assuming that data frames are lists composed of atomic elements. If l contains data frames, the latter can be a lot faster than applying is.atomic to every data frame column.