public static Option <T> OrElse <T>(this Option <T> option, Func <Option <T> > func)
{
if (func == null)
{
throw new ArgumentNullException(nameof(func));
}
return(option.Intent(out _) is OptionData.Some ? option : func.Invoke());
}
public static bool IsNone <T>(this Option <T> option)
{
return(option.Intent(out _) is OptionData.None);
}
public static Option <T> Xor <T>(this Option <T> option, Option <T> other)
{
return(option.Intent(out _) is OptionData.Some
? other.Intent(out _) is OptionData.Some ? Option <T> .None() : option
: other.Intent(out _) is OptionData.Some ? other : Option <T> .None());
}
public static Option <T> Or <T>(this Option <T> option, Option <T> other)
{
return(option.Intent(out _) is OptionData.Some ? option : other);
}
public static Option <U> And <T, U>(this Option <T> option, Option <U> other)
{
return(option.Intent(out _) is OptionData.Some ? other : Option <U> .None());
}