dev: Using collection expressions, no functional change

src/NadekoBot/_common/Abstractions/Extensions/StringExtensions.cs

@@ -6,10 +6,13 @@ namespace NadekoBot.Extensions;
 
 public static class StringExtensions
 {
-    private static readonly HashSet<char> _lettersAndDigits = new(Enumerable.Range(48, 10)
-                                                                            .Concat(Enumerable.Range(65, 26))
-                                                                            .Concat(Enumerable.Range(97, 26))
-                                                                            .Select(x => (char)x));
+    private static readonly HashSet<char> _lettersAndDigits =
+    [
+        ..Enumerable.Range(48, 10)
+                    .Concat(Enumerable.Range(65, 26))
+                    .Concat(Enumerable.Range(97, 26))
+                    .Select(x => (char)x)
+    ];
 
     private static readonly Regex _filterRegex = new(@"discord(?:\.gg|\.io|\.me|\.li|(?:app)?\.com\/invite)\/(\w+)",
         RegexOptions.Compiled | RegexOptions.IgnoreCase);
@@ -43,7 +46,7 @@ public static class StringExtensions
 
     public static string ToTitleCase(this string str)
     {
-        var tokens = str.Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries);
+        var tokens = str.Split([" "], StringSplitOptions.RemoveEmptyEntries);
         for (var i = 0; i < tokens.Length; i++)
         {
             var token = tokens[i];

src/NadekoBot/_common/Configs/BotConfig.cs

@@ -146,14 +146,14 @@ public sealed partial class BotConfig : ICloneable<BotConfig>
         Prefix = ".";
         RotateStatuses = false;
         GroupGreets = false;
-        DmHelpTextKeywords = new()
-        {
+        DmHelpTextKeywords =
+        [
             "help",
             "commands",
             "cmds",
             "module",
             "can you do"
-        };
+        ];
     }
 
 //         [Comment(@"Whether the prefix will be a suffix, or prefix.
@@ -178,8 +178,8 @@ public sealed partial class BlockedConfig
 
     public BlockedConfig()
     {
-        Modules = new();
-        Commands = new();
+        Modules = [];
+        Commands = [];
     }
 }
 

src/NadekoBot/_common/Deck/Deck.cs

@@ -259,10 +259,10 @@ public class Deck
         }
 
         private readonly string[] _regIndicators =
-        {
+        [
             "🇦", ":two:", ":three:", ":four:", ":five:", ":six:", ":seven:", ":eight:", ":nine:", ":keycap_ten:",
             "🇯", "🇶", "🇰"
-        };
+        ];
 
         public Card(CardSuit s, int cardNum)
         {

src/NadekoBot/_common/Medusa/Common/MedusaIoCKernelModule.cs

@@ -64,7 +64,7 @@ public sealed class MedusaNinjectIocModule : IIocModule, IDisposable
         var assembly = typeof(JsonSerializerOptions).Assembly;
         var updateHandlerType = assembly.GetType("System.Text.Json.JsonSerializerOptionsUpdateHandler");
         var clearCacheMethod = updateHandlerType?.GetMethod("ClearCache", BindingFlags.Static | BindingFlags.Public);
-        clearCacheMethod?.Invoke(null, new object?[] { null }); 
+        clearCacheMethod?.Invoke(null, [null]); 
         
         isLoaded = false;
     }

src/NadekoBot/_common/Medusa/Common/MedusaLoaderService.cs

@@ -140,7 +140,7 @@ public sealed class MedusaLoaderService : IMedusaLoaderService, IReadyExecutor,
                           => alias.Equals(commandName, StringComparison.InvariantCultureIgnoreCase)))
                       ?.OptionalStrings
                       .Args
-               ?? new[] { string.Empty };
+               ?? [string.Empty];
     }
 
     public Task ReloadStrings()
@@ -375,7 +375,7 @@ public sealed class MedusaLoaderService : IMedusaLoaderService, IReadyExecutor,
             var targetType = parserType.BaseType!.GetGenericArguments()[0];
             var typeReaderInstance = (TypeReader)Activator.CreateInstance(
                 typeof(ParamParserAdapter<>).MakeGenericType(targetType),
-                args: new[] { parserObj, strings, _cont })!;
+                args: [parserObj, strings, _cont])!;
 
             typeReaders.Add(targetType, typeReaderInstance);
         }
@@ -888,7 +888,7 @@ public sealed class MedusaLoaderService : IMedusaLoaderService, IReadyExecutor,
             var cmdAttribute = method.GetCustomAttribute<cmdAttribute>(true)!;
             var aliases = cmdAttribute.Aliases;
             if (aliases.Length == 0)
-                aliases = new[] { method.Name.ToLowerInvariant() };
+                aliases = [method.Name.ToLowerInvariant()];
 
             cmds.Add(new(
                 aliases,

src/NadekoBot/_common/Services/strings/impl/BotStrings.cs

@@ -81,7 +81,7 @@ public class BotStrings : IBotStrings
 
                 return new CommandStrings()
                 {
-                    Examples = new[] { "" },
+                    Examples = [""],
                     Desc = "?",
                     Params = []
                 };

src/NadekoBot/_common/Yml/MultilineScalarFlowStyleEmitter.cs

@@ -19,7 +19,7 @@ public class MultilineScalarFlowStyleEmitter : ChainedEventEmitter
             var value = eventInfo.Source.Value as string;
             if (!string.IsNullOrEmpty(value))
             {
-                var isMultiLine = value.IndexOfAny(new[] { '\r', '\n', '\x85', '\x2028', '\x2029' }) >= 0;
+                var isMultiLine = value.IndexOfAny(['\r', '\n', '\x85', '\x2028', '\x2029']) >= 0;
                 if (isMultiLine)
                 {
                     eventInfo = new(eventInfo.Source)