Update following discussion with @adecler

Fraser Greenroyd · Fraser Greenroyd · commit ea04c1953b59 · 2023-09-04T16:25:33.000+01:00
diff --git a/Serialiser_Engine/Compute/Deserialise/List.cs b/Serialiser_Engine/Compute/Deserialise/List.cs
@@ -80,22 +80,7 @@ private static List<List<T>> DeserialiseNestedList<T>(this BsonValue bson, List<
 
         private static bool IsNestedList(this BsonValue bson)
         {
-            int nest = 0;
-
-            while(bson.IsBsonArray)
-            {
-                nest++;
-                try
-                {
-                    bson = bson[0];
-                }
-                catch
-                {
-                    break;
-                }
-            }
-
-            return nest > 1;
+            return bson.IsBsonArray && bson.AsBsonArray.Count > 0 && bson.AsBsonArray[0].IsBsonArray;
         }
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -80,22 +80,7 @@ private static List<List<T>> DeserialiseNestedList<T>(this BsonValue bson, List<`
`80`	`80`
`81`	`81`	`private static bool IsNestedList(this BsonValue bson)`
`82`	`82`	`{`
`83`		`- int nest = 0;`
`84`		`-`
`85`		`- while(bson.IsBsonArray)`
`86`		`- {`
`87`		`- nest++;`
`88`		`- try`
`89`		`- {`
`90`		`- bson = bson[0];`
`91`		`- }`
`92`		`- catch`
`93`		`- {`
`94`		`- break;`
`95`		`- }`
`96`		`- }`
`97`		`-`
`98`		`- return nest > 1;`
	`83`	`+ return bson.IsBsonArray && bson.AsBsonArray.Count > 0 && bson.AsBsonArray[0].IsBsonArray;`
`99`	`84`	`}`
`100`	`85`	`}`
`101`	`86`	`}`