remove substring for better syntax

Author: Elektryk-Andrzej

Code/ArgumentSystem/Arguments/ColorArgument.cs

@@ -27,7 +27,7 @@ public static TryGet<Color> TryParseColor(string value)
         var initValue = value;
         if (value.StartsWith("#"))
         {
-            value = value.Substring(1);
+            value = value[1..];
         }
 
         switch (value.Length)

Code/EventSystem/EventHandler.cs

@@ -248,7 +248,7 @@ private static Variable[] InternalGetVariablesFromProperties(List<(object value,
 
             string GetName()
             {
-                return $"ev{name.First().ToString().ToUpper()}{name.Substring(1)}";
+                return $"ev{name.First().ToString().ToUpper()}{name[1..]}";
             }
         }
 
@@ -299,7 +299,7 @@ private static List<string> GetMimicVariablesForEventHelp(List<(Type type, strin
 
             string GetName()
             {
-                return $"ev{name.First().ToString().ToUpper()}{name.Substring(1)}";
+                return $"ev{name.First().ToString().ToUpper()}{name[1..]}";
             }
         }
 

Code/FlagSystem/Flags/CustomCommandFlag.cs

@@ -207,7 +207,7 @@ public static Result RunAttachedScript(CustomCommand requestingCommand, ScriptEx
         {
             var slice = slices[index];
             var argVariable = requestingCommand.Usage[index];
-            var name = argVariable[0].ToString().ToLower() + argVariable.Substring(1);
+            var name = argVariable[0].ToString().ToLower() + argVariable[1..];
 
             if (Tokenizer.GetTokenFromSlice(slice, null!, 0)
                 .WasSuccessful(out var token))

Code/Helpers/Extensions/TypeExtensions.cs

@@ -19,7 +19,7 @@ public static string GetAccurateName(this Type type)
         string name = type.Name;
         int index = name.IndexOf('`');
         if (index > 0)
-            name = name.Substring(0, index);
+            name = name[..index];
 
         sb.Append(name);
         sb.Append('<');

Code/Helpers/ResultSystem/Result.cs

@@ -62,7 +62,7 @@ private static string Process(string value)
 
         if (char.IsLower(value.First()))
         {
-            value = value.First().ToString().ToUpper() + value.Substring(1);
+            value = value.First().ToString().ToUpper() + value[1..];
         }
 
         if (!char.IsPunctuation(value.Last()))

Code/MethodSystem/BaseMethods/Method.cs

@@ -26,7 +26,7 @@ protected Method()
         Subgroup = type.Namespace?
             .Split('.')
             .LastOrDefault()?
-            .WithCurrent(name => name.Substring(0, name.Length - "Methods".Length)) 
+            .WithCurrent(name => name[..^"Methods".Length]) 
                    ?? "Unknown";
 
         var name = type.Name;
@@ -35,7 +35,7 @@ protected Method()
             throw new AndrzejFuckedUpException($"Method class name '{name}' must end with 'Method'.");
         }
 
-        Name = name.Substring(0, name.Length - "Method".Length);
+        Name = name[..^"Method".Length];
         Args = new(this);
     }
 

Code/MethodSystem/Methods/NumberMethods/HexToIntMethod.cs

@@ -31,10 +31,10 @@ public override void Execute()
         var hex = Args.GetText("hex number");
 
         if (hex.StartsWith("0x"))
-            hex = hex.Substring(2);
+            hex = hex[2..];
 
         if (hex.StartsWith("#"))
-            hex = hex.Substring(1);
+            hex = hex[1..];
 
         ReturnValue = int.TryParse(
             hex, 

Code/Plugin/CommandEvents.cs

@@ -42,7 +42,7 @@ public static void CaptureCommand(CommandExecutingEventArgs ev)
             return;
         }
 
-        var methodName = ev.CommandName.Substring(1);
+        var methodName = ev.CommandName[1..];
 
         if (!methodName.Any())
         {

Code/TokenSystem/Tokens/DurationToken.cs

@@ -32,7 +32,7 @@ protected override IParseResult InternalParse(Script scr)
             return new Error("Duration cannot be negative.");
         }
 
-        var unit = value.Substring(unitIndex);
+        var unit = value[unitIndex..];
         TimeSpan? timeSpan = unit switch
         {
             "s" => TimeSpan.FromSeconds(valueAsDouble),

Code/TokenSystem/Tokens/VariableTokens/VariableToken.cs

@@ -59,7 +59,7 @@ protected override IParseResult InternalParse(Script scr)
             return new Ignore();
         }
 
-        Name = RawRep.Substring(1);
+        Name = RawRep[1..];
         if (Name.Any(c => !char.IsLetter(c) && !char.IsDigit(c) && c != '_'))
         {
             return new Ignore();