Use slices package from the stdlib when possible (#5360)

* Use slices from the stdlib when possible

* Add some unit tests

* More small tweaks + add benchmark func

internal/api/resolver_query_find_image.go

@@ -2,11 +2,11 @@ package api
 
 import (
 	"context"
+	"slices"
 	"strconv"
 
 	"github.com/99designs/gqlgen/graphql"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/sliceutil/stringslice"
 )
 
@@ -95,11 +95,11 @@ func (r *queryResolver) FindImages(
 			result, err = qb.Query(ctx, models.ImageQueryOptions{
 				QueryOptions: models.QueryOptions{
 					FindFilter: filter,
-					Count:      sliceutil.Contains(fields, "count"),
+					Count:      slices.Contains(fields, "count"),
 				},
 				ImageFilter: imageFilter,
-				Megapixels:  sliceutil.Contains(fields, "megapixels"),
-				TotalSize:   sliceutil.Contains(fields, "filesize"),
+				Megapixels:  slices.Contains(fields, "megapixels"),
+				TotalSize:   slices.Contains(fields, "filesize"),
 			})
 			if err == nil {
 				images, err = result.Resolve(ctx)

internal/api/resolver_query_find_scene.go

@@ -2,13 +2,13 @@ package api
 
 import (
 	"context"
+	"slices"
 	"strconv"
 
 	"github.com/99designs/gqlgen/graphql"
 
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/scene"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/sliceutil/stringslice"
 )
 
@@ -119,11 +119,11 @@ func (r *queryResolver) FindScenes(
 			result, err = r.repository.Scene.Query(ctx, models.SceneQueryOptions{
 				QueryOptions: models.QueryOptions{
 					FindFilter: filter,
-					Count:      sliceutil.Contains(fields, "count"),
+					Count:      slices.Contains(fields, "count"),
 				},
 				SceneFilter:   sceneFilter,
-				TotalDuration: sliceutil.Contains(fields, "duration"),
-				TotalSize:     sliceutil.Contains(fields, "filesize"),
+				TotalDuration: slices.Contains(fields, "duration"),
+				TotalSize:     slices.Contains(fields, "filesize"),
 			})
 			if err == nil {
 				scenes, err = result.Resolve(ctx)
@@ -174,11 +174,11 @@ func (r *queryResolver) FindScenesByPathRegex(ctx context.Context, filter *model
 		result, err := r.repository.Scene.Query(ctx, models.SceneQueryOptions{
 			QueryOptions: models.QueryOptions{
 				FindFilter: queryFilter,
-				Count:      sliceutil.Contains(fields, "count"),
+				Count:      slices.Contains(fields, "count"),
 			},
 			SceneFilter:   sceneFilter,
-			TotalDuration: sliceutil.Contains(fields, "duration"),
-			TotalSize:     sliceutil.Contains(fields, "filesize"),
+			TotalDuration: slices.Contains(fields, "duration"),
+			TotalSize:     slices.Contains(fields, "filesize"),
 		})
 		if err != nil {
 			return err

internal/api/resolver_query_package.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"sort"
 	"strings"
 
@@ -11,7 +12,6 @@ import (
 	"github.com/stashapp/stash/internal/manager"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/pkg"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 var ErrInvalidPackageType = errors.New("invalid package type")
@@ -166,7 +166,7 @@ func (r *queryResolver) InstalledPackages(ctx context.Context, typeArg PackageTy
 
 	var ret []*Package
 
-	if sliceutil.Contains(graphql.CollectAllFields(ctx), "source_package") {
+	if slices.Contains(graphql.CollectAllFields(ctx), "source_package") {
 		ret, err = r.getInstalledPackagesWithUpgrades(ctx, pm)
 		if err != nil {
 			return nil, err

internal/autotag/gallery.go

@@ -2,11 +2,11 @@ package autotag
 
 import (
 	"context"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/gallery"
 	"github.com/stashapp/stash/pkg/match"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 type GalleryFinderUpdater interface {
@@ -53,7 +53,7 @@ func GalleryPerformers(ctx context.Context, s *models.Gallery, rw GalleryPerform
 		}
 		existing := s.PerformerIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 
@@ -91,7 +91,7 @@ func GalleryTags(ctx context.Context, s *models.Gallery, rw GalleryTagUpdater, t
 		}
 		existing := s.TagIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 

internal/autotag/image.go

@@ -2,11 +2,11 @@ package autotag
 
 import (
 	"context"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/image"
 	"github.com/stashapp/stash/pkg/match"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 type ImageFinderUpdater interface {
@@ -44,7 +44,7 @@ func ImagePerformers(ctx context.Context, s *models.Image, rw ImagePerformerUpda
 		}
 		existing := s.PerformerIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 
@@ -82,7 +82,7 @@ func ImageTags(ctx context.Context, s *models.Image, rw ImageTagUpdater, tagRead
 		}
 		existing := s.TagIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 

internal/autotag/performer.go

@@ -2,13 +2,13 @@ package autotag
 
 import (
 	"context"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/gallery"
 	"github.com/stashapp/stash/pkg/image"
 	"github.com/stashapp/stash/pkg/match"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/scene"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/txn"
 )
 
@@ -63,7 +63,7 @@ func (tagger *Tagger) PerformerScenes(ctx context.Context, p *models.Performer,
 			}
 			existing := o.PerformerIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 
@@ -92,7 +92,7 @@ func (tagger *Tagger) PerformerImages(ctx context.Context, p *models.Performer,
 			}
 			existing := o.PerformerIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 
@@ -121,7 +121,7 @@ func (tagger *Tagger) PerformerGalleries(ctx context.Context, p *models.Performe
 			}
 			existing := o.PerformerIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 

internal/autotag/scene.go

@@ -2,11 +2,11 @@ package autotag
 
 import (
 	"context"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/match"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/scene"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 type SceneFinderUpdater interface {
@@ -44,7 +44,7 @@ func ScenePerformers(ctx context.Context, s *models.Scene, rw ScenePerformerUpda
 		}
 		existing := s.PerformerIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 
@@ -82,7 +82,7 @@ func SceneTags(ctx context.Context, s *models.Scene, rw SceneTagUpdater, tagRead
 		}
 		existing := s.TagIDs.List()
 
-		if sliceutil.Contains(existing, otherID) {
+		if slices.Contains(existing, otherID) {
 			return false, nil
 		}
 

internal/autotag/tag.go

@@ -2,13 +2,13 @@ package autotag
 
 import (
 	"context"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/gallery"
 	"github.com/stashapp/stash/pkg/image"
 	"github.com/stashapp/stash/pkg/match"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/scene"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/txn"
 )
 
@@ -61,7 +61,7 @@ func (tagger *Tagger) TagScenes(ctx context.Context, p *models.Tag, paths []stri
 			}
 			existing := o.TagIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 
@@ -90,7 +90,7 @@ func (tagger *Tagger) TagImages(ctx context.Context, p *models.Tag, paths []stri
 			}
 			existing := o.TagIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 
@@ -119,7 +119,7 @@ func (tagger *Tagger) TagGalleries(ctx context.Context, p *models.Tag, paths []s
 			}
 			existing := o.TagIDs.List()
 
-			if sliceutil.Contains(existing, p.ID) {
+			if slices.Contains(existing, p.ID) {
 				return false, nil
 			}
 

internal/dlna/cds.go

@@ -30,6 +30,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -40,7 +41,6 @@ import (
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/scene"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 var pageSize = 100
@@ -521,7 +521,7 @@ func (me *contentDirectoryService) getPageVideos(sceneFilter *models.SceneFilter
 }
 
 func getPageFromID(paths []string) *int {
-	i := sliceutil.Index(paths, "page")
+	i := slices.Index(paths, "page")
 	if i == -1 || i+1 >= len(paths) {
 		return nil
 	}

internal/dlna/whitelist.go

@@ -1,10 +1,9 @@
 package dlna
 
 import (
+	"slices"
 	"sync"
 	"time"
-
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 // only keep the 10 most recent IP addresses
@@ -30,7 +29,7 @@ func (m *ipWhitelistManager) addRecent(addr string) bool {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	i := sliceutil.Index(m.recentIPAddresses, addr)
+	i := slices.Index(m.recentIPAddresses, addr)
 	if i != -1 {
 		if i == 0 {
 			// don't do anything if it's already at the start

internal/identify/identify.go

@@ -7,6 +7,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"strconv"
 
 	"github.com/stashapp/stash/pkg/logger"
@@ -333,7 +334,7 @@ func (t *SceneIdentifier) addTagToScene(ctx context.Context, s *models.Scene, ta
 		}
 		existing := s.TagIDs.List()
 
-		if sliceutil.Contains(existing, tagID) {
+		if slices.Contains(existing, tagID) {
 			// skip if the scene was already tagged
 			return nil
 		}

internal/identify/identify_test.go

@@ -4,13 +4,13 @@ import (
 	"context"
 	"errors"
 	"reflect"
+	"slices"
 	"strconv"
 	"testing"
 
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/models/mocks"
 	"github.com/stashapp/stash/pkg/scraper"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
 )
@@ -23,7 +23,7 @@ type mockSceneScraper struct {
 }
 
 func (s mockSceneScraper) ScrapeScenes(ctx context.Context, sceneID int) ([]*scraper.ScrapedScene, error) {
-	if sliceutil.Contains(s.errIDs, sceneID) {
+	if slices.Contains(s.errIDs, sceneID) {
 		return nil, errors.New("scrape scene error")
 	}
 	return s.results[sceneID], nil

pkg/gallery/import.go

@@ -3,6 +3,7 @@ package gallery
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -153,7 +154,7 @@ func (i *Importer) populatePerformers(ctx context.Context) error {
 		}
 
 		missingPerformers := sliceutil.Filter(names, func(name string) bool {
-			return !sliceutil.Contains(pluckedNames, name)
+			return !slices.Contains(pluckedNames, name)
 		})
 
 		if len(missingPerformers) > 0 {
@@ -212,7 +213,7 @@ func (i *Importer) populateTags(ctx context.Context) error {
 		}
 
 		missingTags := sliceutil.Filter(names, func(name string) bool {
-			return !sliceutil.Contains(pluckedNames, name)
+			return !slices.Contains(pluckedNames, name)
 		})
 
 		if len(missingTags) > 0 {

pkg/group/import.go

@@ -3,6 +3,7 @@ package group
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -96,7 +97,7 @@ func importTags(ctx context.Context, tagWriter models.TagFinderCreator, names []
 	}
 
 	missingTags := sliceutil.Filter(names, func(name string) bool {
-		return !sliceutil.Contains(pluckedNames, name)
+		return !slices.Contains(pluckedNames, name)
 	})
 
 	if len(missingTags) > 0 {

pkg/group/validate.go

@@ -2,6 +2,7 @@ package group
 
 import (
 	"context"
+	"slices"
 	"strings"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -105,7 +106,7 @@ func (s *Service) validateUpdateGroupHierarchy(ctx context.Context, existing *mo
 	subIDs := idsFromGroupDescriptions(effectiveSubGroups)
 
 	// ensure we haven't set the group as a subgroup of itself
-	if sliceutil.Contains(containingIDs, existing.ID) || sliceutil.Contains(subIDs, existing.ID) {
+	if slices.Contains(containingIDs, existing.ID) || slices.Contains(subIDs, existing.ID) {
 		return ErrHierarchyLoop
 	}
 

pkg/image/import.go

@@ -3,6 +3,7 @@ package image
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -239,7 +240,7 @@ func (i *Importer) populatePerformers(ctx context.Context) error {
 		}
 
 		missingPerformers := sliceutil.Filter(names, func(name string) bool {
-			return !sliceutil.Contains(pluckedNames, name)
+			return !slices.Contains(pluckedNames, name)
 		})
 
 		if len(missingPerformers) > 0 {
@@ -375,7 +376,7 @@ func importTags(ctx context.Context, tagWriter models.TagFinderCreator, names []
 	}
 
 	missingTags := sliceutil.Filter(names, func(name string) bool {
-		return !sliceutil.Contains(pluckedNames, name)
+		return !slices.Contains(pluckedNames, name)
 	})
 
 	if len(missingTags) > 0 {

pkg/image/scan.go

@@ -6,13 +6,13 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
 
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
 	"github.com/stashapp/stash/pkg/models/paths"
 	"github.com/stashapp/stash/pkg/plugin"
 	"github.com/stashapp/stash/pkg/plugin/hook"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/txn"
 )
 
@@ -356,7 +356,7 @@ func (h *ScanHandler) getGalleryToAssociate(ctx context.Context, newImage *model
 		return nil, err
 	}
 
-	if g != nil && !sliceutil.Contains(newImage.GalleryIDs.List(), g.ID) {
+	if g != nil && !slices.Contains(newImage.GalleryIDs.List(), g.ID) {
 		return g, nil
 	}
 

pkg/performer/import.go

@@ -3,6 +3,7 @@ package performer
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -75,7 +76,7 @@ func importTags(ctx context.Context, tagWriter models.TagFinderCreator, names []
 	}
 
 	missingTags := sliceutil.Filter(names, func(name string) bool {
-		return !sliceutil.Contains(pluckedNames, name)
+		return !slices.Contains(pluckedNames, name)
 	})
 
 	if len(missingTags) > 0 {

pkg/plugin/plugins.go

@@ -14,6 +14,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"slices"
 	"strconv"
 	"strings"
 
@@ -23,7 +24,6 @@ import (
 	"github.com/stashapp/stash/pkg/plugin/common"
 	"github.com/stashapp/stash/pkg/plugin/hook"
 	"github.com/stashapp/stash/pkg/session"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/txn"
 	"github.com/stashapp/stash/pkg/utils"
 )
@@ -168,7 +168,7 @@ func (c Cache) enabledPlugins() []Config {
 
 	var ret []Config
 	for _, p := range c.plugins {
-		disabled := sliceutil.Contains(disabledPlugins, p.id)
+		disabled := slices.Contains(disabledPlugins, p.id)
 
 		if !disabled {
 			ret = append(ret, p)
@@ -181,7 +181,7 @@ func (c Cache) enabledPlugins() []Config {
 func (c Cache) pluginDisabled(id string) bool {
 	disabledPlugins := c.config.GetDisabledPlugins()
 
-	return sliceutil.Contains(disabledPlugins, id)
+	return slices.Contains(disabledPlugins, id)
 }
 
 // ListPlugins returns plugin details for all of the loaded plugins.
@@ -192,7 +192,7 @@ func (c Cache) ListPlugins() []*Plugin {
 	for _, s := range c.plugins {
 		p := s.toPlugin()
 
-		disabled := sliceutil.Contains(disabledPlugins, p.ID)
+		disabled := slices.Contains(disabledPlugins, p.ID)
 		p.Enabled = !disabled
 
 		ret = append(ret, p)
@@ -209,7 +209,7 @@ func (c Cache) GetPlugin(id string) *Plugin {
 	if plugin != nil {
 		p := plugin.toPlugin()
 
-		disabled := sliceutil.Contains(disabledPlugins, p.ID)
+		disabled := slices.Contains(disabledPlugins, p.ID)
 		p.Enabled = !disabled
 		return p
 	}

pkg/scene/import.go

@@ -3,6 +3,7 @@ package scene
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strings"
 	"time"
 
@@ -290,7 +291,7 @@ func (i *Importer) populatePerformers(ctx context.Context) error {
 		}
 
 		missingPerformers := sliceutil.Filter(names, func(name string) bool {
-			return !sliceutil.Contains(pluckedNames, name)
+			return !slices.Contains(pluckedNames, name)
 		})
 
 		if len(missingPerformers) > 0 {
@@ -517,7 +518,7 @@ func importTags(ctx context.Context, tagWriter models.TagFinderCreator, names []
 	}
 
 	missingTags := sliceutil.Filter(names, func(name string) bool {
-		return !sliceutil.Contains(pluckedNames, name)
+		return !slices.Contains(pluckedNames, name)
 	})
 
 	if len(missingTags) > 0 {

pkg/scene/merge.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
 	"time"
 
 	"github.com/stashapp/stash/pkg/fsutil"
@@ -28,7 +29,7 @@ func (s *Service) Merge(ctx context.Context, sourceIDs []int, destinationID int,
 	sourceIDs = sliceutil.AppendUniques(nil, sourceIDs)
 
 	// ensure destination is not in source list
-	if sliceutil.Contains(sourceIDs, destinationID) {
+	if slices.Contains(sourceIDs, destinationID) {
 		return errors.New("destination scene cannot be in source list")
 	}
 

pkg/sliceutil/collections.go

@@ -1,26 +1,14 @@
 // Package sliceutil provides utilities for working with slices.
 package sliceutil
 
-// Index returns the first index of the provided value in the provided
-// slice. It returns -1 if it is not found.
-func Index[T comparable](vs []T, t T) int {
-	for i, v := range vs {
-		if v == t {
-			return i
-		}
-	}
-	return -1
-}
-
-// Contains returns whether the vs slice contains t.
-func Contains[T comparable](vs []T, t T) bool {
-	return Index(vs, t) >= 0
-}
+import (
+	"slices"
+)
 
 // AppendUnique appends toAdd to the vs slice if toAdd does not already
 // exist in the slice. It returns the new or unchanged slice.
 func AppendUnique[T comparable](vs []T, toAdd T) []T {
-	if Contains(vs, toAdd) {
+	if slices.Contains(vs, toAdd) {
 		return vs
 	}
 
@@ -31,6 +19,13 @@ func AppendUnique[T comparable](vs []T, toAdd T) []T {
 // appends values that do not already exist in the slice.
 // It returns the new or unchanged slice.
 func AppendUniques[T comparable](vs []T, toAdd []T) []T {
+	if len(toAdd) == 0 {
+		return vs
+	}
+
+	// Extend the slice's capacity to avoid multiple re-allocations even in the worst case
+	vs = slices.Grow(vs, len(toAdd))
+
 	for _, v := range toAdd {
 		vs = AppendUnique(vs, v)
 	}
@@ -41,9 +36,9 @@ func AppendUniques[T comparable](vs []T, toAdd []T) []T {
 // Exclude returns a copy of the vs slice, excluding all values
 // that are also present in the toExclude slice.
 func Exclude[T comparable](vs []T, toExclude []T) []T {
-	var ret []T
+	ret := make([]T, 0, len(vs))
 	for _, v := range vs {
-		if !Contains(toExclude, v) {
+		if !slices.Contains(toExclude, v) {
 			ret = append(ret, v)
 		}
 	}
@@ -53,8 +48,8 @@ func Exclude[T comparable](vs []T, toExclude []T) []T {
 
 // Unique returns a copy of the vs slice, with non-unique values removed.
 func Unique[T comparable](vs []T) []T {
-	distinctValues := make(map[T]struct{})
-	var ret []T
+	distinctValues := make(map[T]struct{}, len(vs))
+	ret := make([]T, 0, len(vs))
 	for _, v := range vs {
 		if _, exists := distinctValues[v]; !exists {
 			distinctValues[v] = struct{}{}
@@ -66,7 +61,7 @@ func Unique[T comparable](vs []T) []T {
 
 // Delete returns a copy of the vs slice with toDel values removed.
 func Delete[T comparable](vs []T, toDel T) []T {
-	var ret []T
+	ret := make([]T, 0, len(vs))
 	for _, v := range vs {
 		if v != toDel {
 			ret = append(ret, v)
@@ -79,7 +74,7 @@ func Delete[T comparable](vs []T, toDel T) []T {
 func Intersect[T comparable](a []T, b []T) []T {
 	var ret []T
 	for _, v := range a {
-		if Contains(b, v) {
+		if slices.Contains(b, v) {
 			ret = append(ret, v)
 		}
 	}
@@ -91,13 +86,13 @@ func Intersect[T comparable](a []T, b []T) []T {
 func NotIntersect[T comparable](a []T, b []T) []T {
 	var ret []T
 	for _, v := range a {
-		if !Contains(b, v) {
+		if !slices.Contains(b, v) {
 			ret = append(ret, v)
 		}
 	}
 
 	for _, v := range b {
-		if !Contains(a, v) {
+		if !slices.Contains(a, v) {
 			ret = append(ret, v)
 		}
 	}
@@ -166,8 +161,9 @@ func PtrsToValues[T any](vs []*T) []T {
 func ValuesToPtrs[T any](vs []T) []*T {
 	ret := make([]*T, len(vs))
 	for i, v := range vs {
-		vv := v
-		ret[i] = &vv
+		// We can do this safely because go.mod indicates Go 1.22
+		// See: https://go.dev/blog/loopvar-preview
+		ret[i] = &v
 	}
 	return ret
 }

pkg/sliceutil/collections_test.go

@@ -1,6 +1,7 @@
 package sliceutil
 
 import (
+	"reflect"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -66,3 +67,85 @@ func TestSliceSame(t *testing.T) {
 		})
 	}
 }
+
+func TestAppendUniques(t *testing.T) {
+	type args struct {
+		vs    []int
+		toAdd []int
+	}
+	tests := []struct {
+		name string
+		args args
+		want []int
+	}{
+		{
+			name: "append to empty slice",
+			args: args{
+				vs:    []int{},
+				toAdd: []int{1, 2, 3},
+			},
+			want: []int{1, 2, 3},
+		},
+		{
+			name: "append all unique values",
+			args: args{
+				vs:    []int{1, 2, 3},
+				toAdd: []int{4, 5, 6},
+			},
+			want: []int{1, 2, 3, 4, 5, 6},
+		},
+		{
+			name: "append with some duplicates",
+			args: args{
+				vs:    []int{1, 2, 3},
+				toAdd: []int{3, 4, 5},
+			},
+			want: []int{1, 2, 3, 4, 5},
+		},
+		{
+			name: "append all duplicates",
+			args: args{
+				vs:    []int{1, 2, 3},
+				toAdd: []int{1, 2, 3},
+			},
+			want: []int{1, 2, 3},
+		},
+		{
+			name: "append to nil slice",
+			args: args{
+				vs:    nil,
+				toAdd: []int{1, 2, 3},
+			},
+			want: []int{1, 2, 3},
+		},
+		{
+			name: "append empty slice",
+			args: args{
+				vs:    []int{1, 2, 3},
+				toAdd: []int{},
+			},
+			want: []int{1, 2, 3},
+		},
+		{
+			name: "append nil to slice",
+			args: args{
+				vs:    []int{1, 2, 3},
+				toAdd: nil,
+			},
+			want: []int{1, 2, 3},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := AppendUniques(tt.args.vs, tt.args.toAdd); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("AppendUniques() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func BenchmarkAppendUniques(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		AppendUniques([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, []int{3, 4, 4, 11, 12, 13, 14, 15, 16, 17, 18})
+	}
+}

pkg/sliceutil/stringslice/string_collections.go

@@ -33,8 +33,8 @@ func FromString(s string, sep string) []string {
 // Unique returns a slice containing only unique values from the provided slice.
 // The comparison is case-insensitive.
 func UniqueFold(s []string) []string {
-	seen := make(map[string]struct{})
-	var ret []string
+	seen := make(map[string]struct{}, len(s))
+	ret := make([]string, 0, len(s))
 	for _, v := range s {
 		if _, exists := seen[strings.ToLower(v)]; exists {
 			continue

pkg/sqlite/gallery.go

@@ -6,12 +6,12 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
 	"github.com/jmoiron/sqlx"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"gopkg.in/guregu/null.v4"
 	"gopkg.in/guregu/null.v4/zero"
 )
@@ -412,7 +412,7 @@ func (qb *GalleryStore) FindMany(ctx context.Context, ids []int) ([]*models.Gall
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			galleries[i] = s
 		}
 

pkg/sqlite/gallery_chapter.go

@@ -5,13 +5,13 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
 	"github.com/jmoiron/sqlx"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 const (
@@ -162,7 +162,7 @@ func (qb *GalleryChapterStore) FindMany(ctx context.Context, ids []int) ([]*mode
 	}
 
 	for _, s := range unsorted {
-		i := sliceutil.Index(ids, s.ID)
+		i := slices.Index(ids, s.ID)
 		ret[i] = s
 	}
 

pkg/sqlite/group.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
@@ -13,7 +14,6 @@ import (
 	"gopkg.in/guregu/null.v4/zero"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 const (
@@ -295,7 +295,7 @@ func (qb *GroupStore) FindMany(ctx context.Context, ids []int) ([]*models.Group,
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			ret[i] = s
 		}
 

pkg/sqlite/group_test.go

@@ -6,6 +6,7 @@ package sqlite_test
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strconv"
 	"strings"
 	"testing"
@@ -1605,7 +1606,7 @@ func TestGroupReorderSubGroups(t *testing.T) {
 
 			// get ids of groups
 			newIDs := sliceutil.Map(gd, func(gd models.GroupIDDescription) int { return gd.GroupID })
-			newIdxs := sliceutil.Map(newIDs, func(id int) int { return sliceutil.Index(idxToId, id) })
+			newIdxs := sliceutil.Map(newIDs, func(id int) int { return slices.Index(idxToId, id) })
 
 			assert.ElementsMatch(t, tt.expectedIdxs, newIdxs)
 		})
@@ -1733,7 +1734,7 @@ func TestGroupAddSubGroups(t *testing.T) {
 
 			// get ids of groups
 			newIDs := sliceutil.Map(gd, func(gd models.GroupIDDescription) int { return gd.GroupID })
-			newIdxs := sliceutil.Map(newIDs, func(id int) int { return sliceutil.Index(idxToId, id) })
+			newIdxs := sliceutil.Map(newIDs, func(id int) int { return slices.Index(idxToId, id) })
 
 			assert.ElementsMatch(t, tt.expectedIdxs, newIdxs)
 		})
@@ -1828,7 +1829,7 @@ func TestGroupRemoveSubGroups(t *testing.T) {
 
 			// get ids of groups
 			newIDs := sliceutil.Map(gd, func(gd models.GroupIDDescription) int { return gd.GroupID })
-			newIdxs := sliceutil.Map(newIDs, func(id int) int { return sliceutil.Index(idxToId, id) })
+			newIdxs := sliceutil.Map(newIDs, func(id int) int { return slices.Index(idxToId, id) })
 
 			assert.ElementsMatch(t, tt.expectedIdxs, newIdxs)
 		})
@@ -1883,7 +1884,7 @@ func TestGroupFindSubGroupIDs(t *testing.T) {
 			}
 
 			// get ids of groups
-			foundIdxs := sliceutil.Map(found, func(id int) int { return sliceutil.Index(groupIDs, id) })
+			foundIdxs := sliceutil.Map(found, func(id int) int { return slices.Index(groupIDs, id) })
 
 			assert.ElementsMatch(t, tt.expectedIdxs, foundIdxs)
 		})

pkg/sqlite/image.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
+	"slices"
 
 	"github.com/jmoiron/sqlx"
 	"github.com/stashapp/stash/pkg/models"
@@ -398,7 +399,7 @@ func (qb *ImageStore) FindMany(ctx context.Context, ids []int) ([]*models.Image,
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			images[i] = s
 		}
 

pkg/sqlite/performer.go

@@ -5,12 +5,12 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
 	"github.com/jmoiron/sqlx"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/utils"
 	"gopkg.in/guregu/null.v4"
 	"gopkg.in/guregu/null.v4/zero"
@@ -398,7 +398,7 @@ func (qb *PerformerStore) FindMany(ctx context.Context, ids []int) ([]*models.Pe
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			ret[i] = s
 		}
 

pkg/sqlite/saved_filter.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
@@ -13,7 +14,6 @@ import (
 
 	"github.com/stashapp/stash/pkg/logger"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 const (
@@ -165,7 +165,7 @@ func (qb *SavedFilterStore) FindMany(ctx context.Context, ids []int, ignoreNotFo
 	}
 
 	for _, s := range unsorted {
-		i := sliceutil.Index(ids, s.ID)
+		i := slices.Index(ids, s.ID)
 		ret[i] = s
 	}
 

pkg/sqlite/scene.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"path/filepath"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -504,7 +505,7 @@ func (qb *SceneStore) FindMany(ctx context.Context, ids []int) ([]*models.Scene,
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			scenes[i] = s
 		}
 

pkg/sqlite/scene_marker.go

@@ -5,13 +5,13 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
 	"github.com/jmoiron/sqlx"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 const sceneMarkerTable = "scene_markers"
@@ -188,7 +188,7 @@ func (qb *SceneMarkerStore) FindMany(ctx context.Context, ids []int) ([]*models.
 	}
 
 	for _, s := range unsorted {
-		i := sliceutil.Index(ids, s.ID)
+		i := slices.Index(ids, s.ID)
 		ret[i] = s
 	}
 

pkg/sqlite/scene_marker_test.go

@@ -5,11 +5,11 @@ package sqlite_test
 
 import (
 	"context"
+	"slices"
 	"strconv"
 	"testing"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/sliceutil/stringslice"
 	"github.com/stretchr/testify/assert"
 )
@@ -133,7 +133,7 @@ func verifyIDs(t *testing.T, modifier models.CriterionModifier, values []int, re
 	case models.CriterionModifierNotEquals:
 		foundAll := true
 		for _, v := range values {
-			if !sliceutil.Contains(results, v) {
+			if !slices.Contains(results, v) {
 				foundAll = false
 				break
 			}

pkg/sqlite/setup_test.go

@@ -10,13 +10,13 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"slices"
 	"strconv"
 	"testing"
 	"time"
 
 	"github.com/stashapp/stash/internal/manager/config"
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/sqlite"
 	"github.com/stashapp/stash/pkg/txn"
 
@@ -1585,7 +1585,7 @@ func getTagMarkerCount(id int) int {
 	count := 0
 	idx := indexFromID(tagIDs, id)
 	for _, s := range markerSpecs {
-		if s.primaryTagIdx == idx || sliceutil.Contains(s.tagIdxs, idx) {
+		if s.primaryTagIdx == idx || slices.Contains(s.tagIdxs, idx) {
 			count++
 		}
 	}

pkg/sqlite/studio.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 
 	"github.com/doug-martin/goqu/v9"
 	"github.com/doug-martin/goqu/v9/exp"
@@ -13,7 +14,6 @@ import (
 	"gopkg.in/guregu/null.v4/zero"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 	"github.com/stashapp/stash/pkg/studio"
 )
 
@@ -305,7 +305,7 @@ func (qb *StudioStore) FindMany(ctx context.Context, ids []int) ([]*models.Studi
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			ret[i] = s
 		}
 

pkg/sqlite/tag.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/doug-martin/goqu/v9"
@@ -14,7 +15,6 @@ import (
 	"gopkg.in/guregu/null.v4/zero"
 
 	"github.com/stashapp/stash/pkg/models"
-	"github.com/stashapp/stash/pkg/sliceutil"
 )
 
 const (
@@ -312,7 +312,7 @@ func (qb *TagStore) FindMany(ctx context.Context, ids []int) ([]*models.Tag, err
 		}
 
 		for _, s := range unsorted {
-			i := sliceutil.Index(ids, s.ID)
+			i := slices.Index(ids, s.ID)
 			ret[i] = s
 		}
 

pkg/studio/import.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 	"strings"
 
 	"github.com/stashapp/stash/pkg/models"
@@ -80,7 +81,7 @@ func importTags(ctx context.Context, tagWriter models.TagFinderCreator, names []
 	}
 
 	missingTags := sliceutil.Filter(names, func(name string) bool {
-		return !sliceutil.Contains(pluckedNames, name)
+		return !slices.Contains(pluckedNames, name)
 	})
 
 	if len(missingTags) > 0 {