diff --git a/src/triangle/_impl/_tri_delaunay_impl.scad b/src/triangle/_impl/_tri_delaunay_impl.scad
index 10d3a1dd..fc56939a 100644
--- a/src/triangle/_impl/_tri_delaunay_impl.scad
+++ b/src/triangle/_impl/_tri_delaunay_impl.scad
@@ -4,7 +4,6 @@ use <../../util/map/hashmap_get.scad>;
 use <../../util/map/hashmap_del.scad>;
 use <../../util/map/hashmap_keys.scad>;
 use <../../util/map/hashmap_put.scad>;
-use <../../util/some.scad>;
 use <../../util/has.scad>;
 use <../../util/find_index.scad>;
 
@@ -199,7 +198,7 @@ function _delaunayBoundaries(d, badTriangles, boundaries, t, vi, _indices_hash)
 	    triangles = delaunay_triangles(d),
 	    opTri = hashmap_get(triangles, t, hash = _indices_hash)[vi]
 	)
-	some(badTriangles, function(tri) tri == opTri) ?
+	has(badTriangles, opTri) ?
 		let(
 		    i = search([t], hashmap_get(triangles, opTri, hash = _indices_hash))[0],
 			nvi = (i + 1) % 3,
diff --git a/src/util/_impl/_dedup_impl.scad b/src/util/_impl/_dedup_impl.scad
index 438204f9..3f697553 100644
--- a/src/util/_impl/_dedup_impl.scad
+++ b/src/util/_impl/_dedup_impl.scad
@@ -12,14 +12,17 @@ function _dedup(elems, leng, buckets, eq, hash, bucket_numbers) =
     )
     _dedup_add(n_buckets_lt[end - 1], [end, elems[end]], eq, hash, bucket_numbers); 
 
-
 function _dedup_add(buckets, i_elem, eq, hash, bucket_numbers) =
     let(
 		elem = i_elem[1],
 	    b_idx = hash(elem) % bucket_numbers,
 		bucket = buckets[b_idx]
 	)
-	some(bucket, function(i_e) eq(i_e[1], elem)) ? buckets : _add(buckets, bucket, i_elem, b_idx);
+    (
+        is_undef(eq) ? 
+            search([elem], bucket, num_returns_per_match = 1, index_col_num = 1) != [[]] : 
+            some(bucket, function(i_e) eq(i_e[1], elem))
+    ) ? buckets : _add(buckets, bucket, i_elem, b_idx);
 
 function _add(buckets, bucket, i_elem, b_idx) = 
     let(leng = len(buckets))
diff --git a/src/util/dedup.scad b/src/util/dedup.scad
index 56d3236f..80dfe60e 100644
--- a/src/util/dedup.scad
+++ b/src/util/dedup.scad
@@ -12,7 +12,7 @@ use <../__comm__/_str_hash.scad>;
 use <_impl/_dedup_impl.scad>;
 use <sort.scad>;
 
-function dedup(lt, eq = function(e1, e2) e1 == e2, hash = function(e) _str_hash(e), number_of_buckets) =
+function dedup(lt, eq = undef, hash = function(e) _str_hash(e), number_of_buckets) =
     let(leng_lt = len(lt))
     leng_lt < 2 ? lt :
 	let(