Fix: Don't call batch functions with empty sequences

RELEASE_NOTES.md

@@ -5,6 +5,10 @@ These are the release notes for Fling (the main package).
 See [RELEASE_NOTES_Fling.Interop.Facil.md](RELEASE_NOTES_Fling.Interop.Facil.md) for the release notes for
 Fling.Interop.Facil.
 
+### 0.5.1 (2024-11-07)
+
+* Fixed bug introduced in 0.5.0 where `...WithoutUpdate` functions would throw even if there was nothing to update
+
 ### 0.5.0 (2024-11-06)
 
 * **Breaking** (hopefully not in practice): For to-many child entities, all deletes are performed first, then all

src/Fling/Fling.fsproj

@@ -15,7 +15,7 @@
     <!-- TODO: Create and add logo -->
     <!--<PackageIcon>fling-logo-128x128.png</PackageIcon>-->
     <PackageReleaseNotes>https://github.com/cmeeren/Fling/blob/master/RELEASE_NOTES.md</PackageReleaseNotes>
-    <Version>0.5.0</Version>
+    <Version>0.5.1</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/Fling/Library.fs

@@ -85,9 +85,14 @@ module Fling =
                         | true, oldChild when newChild <> oldChild -> toUpdate.Add newChild
                         | true, _ -> ()
 
-                    do! batchDelete arg toDelete
-                    do! batchUpdate arg toUpdate
-                    do! batchInsert arg toInsert
+                    if toDelete.Count > 0 then
+                        do! batchDelete arg toDelete
+
+                    if toUpdate.Count > 0 then
+                        do! batchUpdate arg toUpdate
+
+                    if toInsert.Count > 0 then
+                        do! batchInsert arg toInsert
 
                 return result
             }