provide a way to run app

pkg/collections/set.go

@@ -0,0 +1,25 @@
+package collections
+
+type Set[V comparable] map[V]struct{}
+
+func NewSet[V comparable](values ...V) Set[V] {
+	out := make(map[V]struct{}, len(values))
+	for _, value := range values {
+		out[value] = struct{}{}
+	}
+
+	return out
+}
+
+func (s Set[V]) Array() []V {
+	out := make([]V, 0, len(s))
+	for k := range s {
+		out = append(out, k)
+	}
+	return out
+}
+
+func (s Set[V]) Contains(other V) bool {
+	_, ok := s[other]
+	return ok
+}