rel

The rel library contains functions for relational operations.

//rel.union(s <: set_of_sets) <: set

union takes a set of sets s and does a union operation on each member of s. It returns the unioned sets.

example	equals
//rel.union({{1, 2}, {3, 4, 2, 10}, {4, 5, 'another', 'duplicate'}, {'duplicate'}})	{1, 2, 3, 4, 5, 10, 'another', 'duplicate'}