From 9d5dfaaa68251997bd4386e3e61827b9c2f993cf Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Wed, 12 Jun 2024 14:49:16 -0400
Subject: [PATCH] Make match sets immutable

---
 CHANGELIST.md                             | 1 +
 MPF.Frontend/Tools/SubmissionGenerator.cs | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/CHANGELIST.md b/CHANGELIST.md
index 56d6108d..7a109798 100644
--- a/CHANGELIST.md
+++ b/CHANGELIST.md
@@ -176,6 +176,7 @@
 - Simplify DIC DMI location finding
 - Move track full matching to separate loop
 - Fix... something with Linux publish script
+- Make match sets immutable
 
 ### 3.1.9a (2024-05-21)
 
diff --git a/MPF.Frontend/Tools/SubmissionGenerator.cs b/MPF.Frontend/Tools/SubmissionGenerator.cs
index 4197f26c..41650540 100644
--- a/MPF.Frontend/Tools/SubmissionGenerator.cs
+++ b/MPF.Frontend/Tools/SubmissionGenerator.cs
@@ -183,7 +183,7 @@ namespace MPF.Frontend.Tools
 
             // Setup the checks
             bool allFound = true;
-            List<List<int>> foundIdSets = []; 
+            List<int[]> foundIdSets = []; 
 
             // Loop through all of the hashdata to find matching IDs
             resultProgress?.Report(ResultEventArgs.Success("Finding disc matches on Redump..."));
@@ -234,7 +234,7 @@ namespace MPF.Frontend.Tools
                     resultProgress?.Report(ResultEventArgs.Failure(result));
 
                 // Add the found IDs to the map
-                foundIdSets.Add(foundIds ?? []);
+                foundIdSets.Add(foundIds?.ToArray() ?? []);
 
                 // Ensure that all tracks are found
                 allFound &= singleFound;
@@ -250,7 +250,7 @@ namespace MPF.Frontend.Tools
                     // First track is always all IDs
                     if (fullyMatchedIDs == null)
                     {
-                        fullyMatchedIDs = set;
+                        fullyMatchedIDs = [.. set];
                         continue;
                     }