C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;

using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;


public class Program
{
	public static void Main()
	{

		var value = "Hello";
		Console.WriteLine(value);

		// Manual
		ulong longManual = (ulong)value[3] << 48 | (ulong)value[2] << 32 | (ulong)value[1] << 16 | (ulong)value[0];
		Console.WriteLine("Manual:    " + longManual);

		// Naive allocating way
		var valueArray = value.ToCharArray();
		var longArray = MemoryMarshal.Cast<char, ulong>(valueArray);
		Console.WriteLine("Control:   " + longArray[0]);

		// Optimized
		var longVal = Unsafe.As<char, ulong>(ref Unsafe.AsRef(value.GetPinnableReference()));
		Console.WriteLine("Optimized: " + longVal);

	}
}

​x
 
using System;
​
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
​
​
public class Program
{
    public static void Main()
    {
​
        var value = "Hello";
        Console.WriteLine(value);
​
        // Manual
        ulong longManual = (ulong)value[3] << 48 | (ulong)value[2] << 32 | (ulong)value[1] << 16 | (ulong)value[0];
        Console.WriteLine("Manual:    " + longManual);
​
        // Naive allocating way
        var valueArray = value.ToCharArray();
        var longArray = MemoryMarshal.Cast<char, ulong>(valueArray);
        Console.WriteLine("Control:   " + longArray[0]);
​
        // Optimized
        var longVal = Unsafe.As<char, ulong>(ref Unsafe.AsRef(value.GetPinnableReference()));
        Console.WriteLine("Optimized: " + longVal);
​
    }
}

Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 27, col 26): The type or namespace name 'DiUserControlImpl' could not be found (are you missing a using directive or an assembly reference?)
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 32, col 9): The name 'Container' does not exist in the current context
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Container' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Container' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy
Compilation error (line 1, col 1): Assuming assembly reference 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' used by 'Unity.Abstractions' matches identity 'System.Runtime, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' of 'System.Runtime', you may need to supply runtime policy

Last Run:	12:53:58 am
Compile:	0.234s
Execute:	0s
Memory:	0b
CPU:	0s

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