Move the remaining former-generic.go parts out of lib/util/

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/maps/maputil.go b/lib/maps/maputil.go
new file mode 100644
index 0000000..aeebe12
--- /dev/null
+++ b/lib/maps/maputil.go
@@ -0,0 +1,25 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package maps
+
+import (
+	"golang.org/x/exp/constraints"
+
+	"git.lukeshu.com/btrfs-progs-ng/lib/slices"
+)
+
+func Keys[K comparable, V any](m map[K]V) []K {
+	ret := make([]K, 0, len(m))
+	for k := range m {
+		ret = append(ret, k)
+	}
+	return ret
+}
+
+func SortedKeys[K constraints.Ordered, V any](m map[K]V) []K {
+	ret := Keys(m)
+	slices.Sort(ret)
+	return ret
+}