public static void Main()
Console.WriteLine(tempCelc
.Map(x => $"Temperature: {x} C"));
Console.WriteLine(tempCelc.Map(x => x * 9)
.Map(x => $"Temperature: {x} F"));
public static class MapExtension
public static TOutput Map<TInput, TOutput>(this TInput input, Func<TInput, TOutput> f) =>