Provides a deconstructor and a method in the "TryGet" style for nullable types in C#.

NullableExtensions.cs

void Main()
{
	Nullable<int> n = 3;
	n.HasValue(out var i).Dump();
	i.Dump();

	var (a, value) = n;
	a.Dump();
	value.Dump();

	n = null;
	n.HasValue(out var i2).Dump();
	i2.Dump();
}

public static class NullableExtensions
{
	public static bool HasValue<T>(this Nullable<T> instance, out T value) where T : struct
	{
		var result = instance.HasValue;
		value = result ? instance.Value : default;
		return result;
	}

	public static void Deconstruct<T>(this Nullable<T> instance, out bool hasValue, out T value) where T : struct
	{
		hasValue = instance.HasValue;
		value = hasValue ? instance.Value : default;
	}
}