Follow the following steps to enable the latest C# syntax for your Unity project.
Only tested with Scripting Backend set to Mono and Api Compatibility Level set to .NET Standard 2.1.
In Edit > Project Settings... > Player > Other Settings > Additional Compiler Arguments, add /langversion:latest, then Apply.
Put LangVersionPostprocessor.cs under the <project_root>/Assets/Standard Assets/Editor folder.
You may change its filename and classname.
| using System.Text.RegularExpressions; | |
| using UnityEditor; | |
| /// <remarks> | |
| /// This class need to be placed in Assets/Standard Assets/Editor folder to be compiled before other scripts. | |
| /// See <see href="https://docs.unity3d.com/Manual/ScriptCompileOrderFolders.html"/>. | |
| /// </remarks> | |
| internal sealed class LangVersionPostprocessor : AssetPostprocessor { | |
| private static string OnGeneratedCSProject(string path, string content) { | |
| var pattern = @"<LangVersion>(.*?)<\/LangVersion>"; | |
| var replacement = "<LangVersion>latest</LangVersion>"; | |
| content = Regex.Replace(content, pattern, replacement); | |
| return content; | |
| } | |
| } |