using System.Collections.Concurrent;

namespace ServerDatabase;

internal static class Ext
{
    internal static bool IsNullableEnum(this Type t)
    {
        Type u = Nullable.GetUnderlyingType(t)!;
        return (u != null) && u.IsEnum;
    }
    
    public static OutputType[] Cast<InputType, OutputType>(InputType f)
    {
        Array inputArray_in = (Array)(object)f;
        var aRange = Partitioner.Create(0, inputArray_in.Length);
        OutputType[] aResult = new OutputType[inputArray_in.Length];

        Parallel.ForEach(aRange, (r) =>
        {
            for (int i = r.Item1; i < r.Item2; i++)
            {
                aResult[i] = (OutputType)(inputArray_in.GetValue(i));
            }
        });

        return aResult;
    }
    
}