ListSetOperations: Set operations on lists of character vectors.
In AEBilgrau/Bmisc: Biostatistical miscellaneous functions

Description Usage Arguments Details Value Author(s) See Also Examples

Set operations on lists of character vectors.

Intersect(x)

Setdiff(x, y)

Union(x)

`x`	A `list` of `character` vectors.
`y`	A `list` of `character` vectors.

These functions perform basic set operations on lists of character vectors in a recursive manner. The work analogous to union, intersect, and setdiff but on lists.

Intersect returns the intersection of all vectors in x.

Setdiff returns the intersection of x minus the union of y.

Union returns the union all character vectors in x.

Anders Ellern Bilgrau <anders.ellern.bilgrau (at) gmail.com>

union, intersect, setdiff

without

set.seed(1)
x <- lapply(2:6, function(i) sample(LETTERS, 10+i))
y <- lapply(1:3, function(i) sample(LETTERS, 2+i))

Union(x)  # The union of all vectors in x
Intersect(x)  # The intersection of all vectors in x
Setdiff(x, y)  # All elements in the intersection of x, but not in any y