NN

```cs public static IEnumerable Zip(this IEnumerable first, IEnumerable second, IEnumerable third); public static IQueryable Zip(this IQueryable source1, IEnumerable source2, IEnumerable sour ```

https://docs.microsoft.com/en-us/dotnet/api/system.threading.tasks.task.waitasync?view=net-6.0

https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.priorityqueue-2?view=net-6.0

https://www.stevejgordon.co.uk/using-dateonly-and-timeonly-in-dotnet-6

Missing System.Threading .AsyncLocal

2

https://docs.microsoft.com/en-us/dotnet/api/system.threading.asynclocal-1?view=net-5.0

https://docs.microsoft.com/en-us/dotnet/api/system.string.replace?view=net-5.0#System_String_Replace_System_String_System_String_System_StringComparison_ https://docs.microsoft.com/en-us/dotnet/api/system.string.indexof?view=net-5.0#System_String_IndexOf_System_Char_System_StringComparison_ And others

Since C# doesn't support extension properties it is possible to introduce extension methods working for all frameworks like it is done in: https://github.com/rsdn/CodeJam/blob/master/CodeJam.Main/Targeting/TypeExtensions.cs Example for IsSealed ```cs [MethodImpl(AggressiveInlining)] public static...

System.Reflection.TypeExtensions is missing GetConstructor, GetMethod with BindingFlags for .NET Core < 2.0 Possible implementation: https://github.com/rsdn/CodeJam/blob/master/CodeJam.Main/Targeting/TypeExtensions.cs