C# Ref（對於開發者的運行原理）

class Program
{
    static void Main()
    {
        int number = 100;
        ModifyNumber(ref number);
        Console.WriteLine(number); // Output: 200
    }

    // Method that modifies the original number through 'ref'
    static void ModifyNumber(ref int number)
    {
        number = 200; // Modifies the original value
    }
}

Friend Class Program
	Shared Sub Main()
		Dim number As Integer = 100
		ModifyNumber(number)
		Console.WriteLine(number) ' Output: 200
	End Sub

	' Method that modifies the original number through 'ref'
	Private Shared Sub ModifyNumber(ByRef number As Integer)
		number = 200 ' Modifies the original value
	End Sub
End Class

class Program
{
    static void Main()
    {
        int result;
        CalculateResult(out result);
        Console.WriteLine(result); // Output: 100
    }

    // Method that calculates a result and assigns it via 'out'
    static void CalculateResult(out int calculation)
    {
        calculation = 20 * 5; // Must initialize the out parameter
    }
}

Friend Class Program
	Shared Sub Main()
		Dim result As Integer = Nothing
		CalculateResult(result)
		Console.WriteLine(result) ' Output: 100
	End Sub

	' Method that calculates a result and assigns it via 'out'
	Private Shared Sub CalculateResult(ByRef calculation As Integer)
		calculation = 20 * 5 ' Must initialize the out parameter
	End Sub
End Class

class Program
{
    static void Main()
    {
        int normalParameter = 10, refParameter = 10;
        IncrementValue(normalParameter);
        IncrementValue(ref refParameter);
        Console.WriteLine($"Normal: {normalParameter}, Ref: {refParameter}"); // Output: Normal: 10, Ref: 11
    }

    // Method that increments a copy of the integer
    static void IncrementValue(int number)
    {
        number++;
    }

    // Method that increments the original integer using 'ref'
    static void IncrementValue(ref int number)
    {
        number++;
    }
}

Friend Class Program
	Shared Sub Main()
		Dim normalParameter As Integer = 10, refParameter As Integer = 10
		IncrementValue(normalParameter)
		IncrementValue(refParameter)
		Console.WriteLine($"Normal: {normalParameter}, Ref: {refParameter}") ' Output: Normal: 10, Ref: 11
	End Sub

	' Method that increments a copy of the integer
'INSTANT VB TODO TASK: VB does not allow method overloads which differ only in parameter ByVal/ByRef:
'ORIGINAL LINE: static void IncrementValue(int number)
	Private Shared Sub IncrementValue(ByVal number As Integer)
		number += 1
	End Sub

	' Method that increments the original integer using 'ref'
'INSTANT VB TODO TASK: VB does not allow method overloads which differ only in parameter ByVal/ByRef:
'ORIGINAL LINE: static void IncrementValue(ref int number)
	Private Shared Sub IncrementValue(ByRef number As Integer)
		number += 1
	End Sub
End Class