from slice

set/set.go

@@ -1,15 +1,28 @@
 package set
 
+// Set is a set of elements.
 type Set[A comparable] map[A]struct{}
 
+// New creates a new set.
 func New[A comparable]() Set[A] {
 	return make(Set[A])
 }
 
+// FromSlice creates a new set from a slice.
+func FromSlice[A comparable](as ...A) Set[A] {
+	s := make(Set[A])
+	for _, a := range as {
+		s.Add(a)
+	}
+	return s
+}
+
+// Add adds an element to the set.
 func (s Set[A]) Add(a A) {
 	s[a] = struct{}{}
 }
 
+// Contains checks if an element is in the set.
 func (s Set[A]) Contains(a A) bool {
 	_, ok := s[a]
 	return ok