public static NSOrderedSet operator +(NSOrderedSet first, NSOrderedSet second)
{
if (first == null)
{
return(new NSOrderedSet(second));
}
if (second == null)
{
return(new NSOrderedSet(first));
}
var copy = new NSMutableOrderedSet(first);
copy.UnionSet(second);
return(copy);
}
public static NSMutableOrderedSet <TKey> operator +(NSMutableOrderedSet <TKey> first, NSOrderedSet <TKey> second)
{
if (first == null)
{
return(second != null ? new NSMutableOrderedSet <TKey> (second) : null);
}
if (second == null)
{
return(new NSMutableOrderedSet <TKey> (first));
}
var copy = new NSMutableOrderedSet <TKey> (first);
copy.UnionSet(second);
return(copy);
}