re-organize some things between files

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/util/maputil.go b/lib/util/maputil.go
new file mode 100644
index 0000000..d7f1727
--- /dev/null
+++ b/lib/util/maputil.go
@@ -0,0 +1,23 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package util
+
+import (
+	"golang.org/x/exp/constraints"
+)
+
+func MapKeys[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 SortedMapKeys[K constraints.Ordered, V any](m map[K]V) []K {
+	ret := MapKeys(m)
+	SortSlice(ret)
+	return ret
+}