Use maps.Keys for extracting maps keys

go.mod

@@ -1,6 +1,6 @@
 module github.com/hansmi/prometheus-lvm-exporter
 
-go 1.22
+go 1.22.0
 
 toolchain go1.22.7
 
@@ -33,6 +33,7 @@ require (
 	github.com/sergi/go-diff v1.2.0 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
 	golang.org/x/crypto v0.28.0 // indirect
+	golang.org/x/exp v0.0.0-20241108190413-2d47ceb2692f // indirect
 	golang.org/x/net v0.29.0 // indirect
 	golang.org/x/oauth2 v0.23.0 // indirect
 	golang.org/x/sys v0.26.0 // indirect

go.sum

@@ -66,6 +66,8 @@ github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8
 github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
 golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
 golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
+golang.org/x/exp v0.0.0-20241108190413-2d47ceb2692f h1:XdNn9LlyWAhLVp6P/i8QYBW+hlyhrhei9uErw2B5GJo=
+golang.org/x/exp v0.0.0-20241108190413-2d47ceb2692f/go.mod h1:D5SMRVC3C2/4+F/DB1wZsLRnSNimn2Sp/NPsCrsv8ak=
 golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
 golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
 golang.org/x/oauth2 v0.23.0 h1:PbgcYx2W7i4LvjJWEbf0ngHV6qJYr86PkAV3bXdLEbs=

groupcollector.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/hansmi/prometheus-lvm-exporter/lvmreport"
 	"github.com/prometheus/client_golang/prometheus"
+	"golang.org/x/exp/maps"
 )
 
 type groupField struct {
@@ -131,11 +132,7 @@ func (c *groupCollector) collect(ch chan<- prometheus.Metric, data *lvmreport.Re
 		}
 	}
 
-	var details []string
-
-	for i := range unknown {
-		details = append(details, i)
-	}
+	details := maps.Keys(unknown)
 
 	sort.Strings(details)