Initial commit of modash

This was taken from github.com/lmika/gopkgs/fp

moslice/uniq_test.go

@@ -0,0 +1,31 @@
+package moslice_test
+
+import (
+	"fmt"
+	"lmika.dev/pkg/modash/moslice"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUniq(t *testing.T) {
+	t.Run("should return a slice with unique elements", func(t *testing.T) {
+		scenarios := []struct {
+			in   []int
+			want []int
+		}{
+			{in: nil, want: nil},
+			{in: []int{}, want: []int{}},
+			{in: []int{2}, want: []int{2}},
+			{in: []int{1, 2}, want: []int{1, 2}},
+			{in: []int{2, 2}, want: []int{2}},
+			{in: []int{3, 1, 4, 2, 3, 5, 1, 4}, want: []int{3, 1, 4, 2, 5}},
+		}
+
+		for i, s := range scenarios {
+			t.Run(fmt.Sprint(i), func(t *testing.T) {
+				assert.Equal(t, s.want, moslice.Uniq(s.in))
+			})
+		}
+	})
+}