Tests if a given object is union-closed.
Usage
union_closed(object, ...)
# S3 method for TidySet
union_closed(object, sets = NULL, ...)
Arguments
- object
A TidySet object.
- ...
Other named arguments passed to FUN.
- sets
The name of the sets to be used.
Value
A logical value: TRUE if the combinations of sets produce already
existing sets, FALSE otherwise.
Examples
l <- list(A = "1",
B = c("1", "2"),
C = c("2", "3", "4"),
D = c("1", "2", "3", "4")
)
TS <- tidySet(l)
union_closed(TS)
#> [1] TRUE
union_closed(TS, sets = c("A", "B", "C"))
#> [1] FALSE
union_closed(TS, sets = c("A", "B", "C", "D"))
#> [1] TRUE
