Initial commit of modash

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

momap/toslice_test.go

@@ -0,0 +1,28 @@
+package momap_test
+
+import (
+	"lmika.dev/pkg/modash/momap"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestToSlice(t *testing.T) {
+	type pair struct {
+		left  int
+		right string
+	}
+
+	ms := map[int]string{
+		1: "one",
+		2: "two",
+		3: "three",
+	}
+
+	pairs := momap.ToSlice(ms, func(k int, v string) pair { return pair{k, v} })
+
+	assert.Len(t, pairs, 3)
+	assert.Contains(t, pairs, pair{1, "one"})
+	assert.Contains(t, pairs, pair{2, "two"})
+	assert.Contains(t, pairs, pair{3, "three"})
+}