From f6def15e416c2e1a5419e92ba3488a30d0f4108c Mon Sep 17 00:00:00 2001
From: oppiliappan <me@oppi.li>
Date: Mon, 2 Jun 2025 20:14:22 +0100
Subject: [PATCH] set: introduce set intersection
Change-Id: squuuywunnkllwmqxymormkywzxpppzp

Signed-off-by: oppiliappan <me@oppi.li>
---
 set.go | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/set.go b/set.go
index eca34a3..2698c91 100644
--- a/set.go
+++ b/set.go
@@ -33,3 +33,14 @@ func (s Set[T]) Union(other Set[T]) Set[T] {
 	}
 	return result
 }
+
+// Intersection returns a new set containing elements common to s and other.
+func (s Set[T]) Intersection(other Set[T]) Set[T] {
+	result := New[T]()
+	for k := range s {
+		if _, ok := other[k]; ok {
+			result.Add(k)
+		}
+	}
+	return result
+}
-- 
2.43.0