C# Default Parameters Not Working

Unity Engine
1

I have an abstract class that declares several constants, and then those are used as defaults for some parameters in methods later

public abstract class Foo
{
	public const int ONE = 1;
	public const int TWO = 2;
	
	public void CustomUpdate()
	{
		...
		Bar("some string", true);   // ERROR HERE
		...
	}
	
	protected void Bar(string one, bool two, int three = ONE)
	{
		....
	}
}

For some reason I kept getting an error when I try to call Bar. It said something like “the name Bar does not exist in the current context.” I noticed that if I did the following, it would work.

public abstract class Foo
{
	public const int ONE = 1;
	public const int TWO = 2;
	
	public void CustomUpdate()
	{
		...
		Bar("some string", true);
		...
	}
	
	public void Bar(string one, bool two, int three = 1)   // see I changed the parameter "three"
	{
		....
	}
}

I thought constants were figured out at compile-time, thus could be used as default parameters? I know that the Mono .NET version is out of date compared to the current .NET version, but I wouldn’t think that constants would ever be figured out at run-time.

In order to still be able to use the constants, I just created overloading methods for the “Bar” method name and I don’t have any errors. Here is the current code sample in case anyone sees this problem in the future:

public abstract class Foo
{
	public const int ONE = 1;
	public const int TWO = 2;
	
	public void CustomUpdate()
	{
		...
		Bar("some string", true);
		...
	}
	
	public void Bar(string one, bool two, int three)
	{
		....
	}
	
	public void Bar(string one, bool two)
	{
		Bar(one, two, ONE);	// I want the constant "ONE" to be the default parameter
	}
}

Either way, is this a bug, or am I missing something?

Thank you in advance!

2

when you call the function the word Bar gets highlighted i think it’s a reserved word, try using a different name for your function

3

I only used Foo and Bar for argument’s sake. My actual code is using different names.

4

In your first example, Bar is protected. In the later examples, it is public. Could that be the problem?