To be fair, out of these TS/JS and Swift stand out like pretty big ecosystems and languages, I don't know how one developer can fully "learn" all of them to a h

To be fair, out of these TS/JS and Swift stand out like pretty big ecosystems and languages, I don't know how one developer can fully "learn" all of them to a high proficiency level in a reasonable time. For C# (which is another "big" language), people tend to overlook high quality first-party tutorials and documentation: - https://learn.microsoft.com/en-us/dotnet/csharp/tour-of-csharp/tutorials/ https://learn.microsoft.com/en-us/dotnet/csharp/tour-of-csha... - https://learn.microsoft.com/en-us/aspnet/core/getting-started/?view=aspnetcore-8.0 https://learn.microsoft.com/en-us/aspnet/core/getting-starte... - https://learn.microsoft.com/en-us/dotnet https://learn.microsoft.com/en-us/dotnet (general sitemap of everything that's there)