set

pkg/set/set.go

@@ -1,12 +1,30 @@
 package set
 
-type Set[T comparable] map[T]struct{}
+import "sort"
 
-func NewSet[T comparable]() Set[T] {
+type Integer interface {
+	~int | ~int8 | ~int16 | ~int32 | ~int64
+}
+
+type Float interface {
+	~float32 | ~float64
+}
+
+type String interface {
+	~string
+}
+
+type Comparable interface {
+	Integer | Float | String
+}
+
+type Set[T Comparable] map[T]struct{}
+
+func NewSet[T Comparable]() Set[T] {
 	return make(map[T]struct{})
 }
 
-func NewSetWithItems[T comparable](items ...T) Set[T] {
+func NewSetWithItems[T Comparable](items ...T) Set[T] {
 	s := make(Set[T])
 	s.AddWithOutEmpty(items...)
 	return s
@@ -48,3 +66,27 @@ func (s Set[T]) ToSlice() []T {
 	}
 	return res
 }
+
+func (s Set[T]) ToSortSlice() []T {
+	res := make([]T, 0, len(s))
+	for k := range s {
+		res = append(res, k)
+	}
+
+	sort.Slice(res, func(i, j int) bool {
+		return res[i] < res[j]
+	})
+	return res
+}
+
+func (s Set[T]) ToCustomSortSlice(f func(i, j int) bool) []T {
+	res := make([]T, 0, len(s))
+	for k := range s {
+		res = append(res, k)
+	}
+
+	sort.Slice(res, func(i, j int) bool {
+		return f(i, j)
+	})
+	return res
+}

pkg/set/set_test.go

@@ -0,0 +1,37 @@
+package set
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestSet_ToCustomSortSlice(t *testing.T) {
+	type args struct {
+		f func(i, j int) bool
+	}
+	type testCase[T Comparable] struct {
+		name string
+		s    Set[T]
+		args args
+		want []T
+	}
+	tests := []testCase[int]{
+		{
+			name: "test1",
+			s:    NewSetWithItems(1, 2, 3, 4, 5),
+			args: args{
+				f: func(i, j int) bool {
+					return i > j
+				},
+			},
+			want: []int{5, 4, 3, 2, 1},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.s.ToCustomSortSlice(tt.args.f); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("ToCustomSortSlice() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}