Initial commit of modash

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

momap/toslice.go

@@ -0,0 +1,29 @@
+package momap
+
+func ToSlice[K comparable, V, T any](m map[K]V, fn func(k K, v V) T) []T {
+	if m == nil {
+		return nil
+	}
+
+	ts := make([]T, 0, len(m))
+	for k, v := range m {
+		ts = append(ts, fn(k, v))
+	}
+	return ts
+}
+
+func ToSliceWithError[K comparable, V, T any](m map[K]V, fn func(k K, v V) (T, error)) ([]T, error) {
+	if m == nil {
+		return nil, nil
+	}
+
+	ts := make([]T, 0, len(m))
+	for k, v := range m {
+		w, err := fn(k, v)
+		if err != nil {
+			return nil, err
+		}
+		ts = append(ts, w)
+	}
+	return ts, nil
+}