This function deletes the mapping for the specified key from a util/map/hashmap if present. It returns a new map without the key/value.

Since: 3.0


  • map : The original map.
  • key : The specified key.
  • 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/map/hashmap.scad>;
use <util/map/hashmap_get.scad>;
use <util/map/hashmap_del.scad>;

m1 = hashmap([["k1", 10], ["k2", 20], ["k3", 30]]);
m2 = hashmap_del(m1, "k1");
assert(hashmap_get(m2, "k1") == undef);