This function adds an element to a util/set/hashset. It returns a new set containing the added element.

Since: 3.0


  • set : The original set.
  • elem : Adds the specified element to the specified set.
  • eq : A equality function. If it's ignored, use == to compare elements.
  • hash : A hash function. If it's ignored, convert each element to a string and hash it.


use <util/set/hashset.scad>;
use <util/set/hashset_add.scad>;
use <util/set/hashset_has.scad>;

s1 = hashset([1, 2, 3, 4, 5]);
s2 = hashset_add(s1, 9);
assert(hashset_has(s2, 9));