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CSharp · Console

/Program.cs

using System;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
				
public static class Program
{
	public static void Main()
	{
		double[,] testMulti = 
		{
			{ 1, 2, 3, 4 },
			{ 5, 6, 7, 8 },
			{ 9, 9.5f, 10, 11 },
			{ 12, 13, 14.3f, 15 }
		};

		var span = testMulti.AsSpan<double>();
		
		var singleArray = new double[span.Length];
		span.CopyTo(singleArray.AsSpan());
		singleArray.Dump();
	}
	public static Span<T> AsSpan<T>(this Array array)
	{
    	return MemoryMarshal.CreateSpan(ref Unsafe.As<byte, T>(ref MemoryMarshal.GetArrayDataReference(array)), array.Length);
	}
}