#680 – Virtual Modifier Combinations

Below is a chart showing all of the possible combinations for the virtual, override, new and sealed modifiers, which dictate polymorphic behavior of inherited members.

The chart shows the allowed combinations for an inheritance tree consisting of three classes–DogTerrier (which inherits from Dog) and Yorkshire (which inherits from Terrier).  It’s assumed that there is a member in each class, e.g. a Bark method.  This chart then shows all the possible combinations of modifiers for that member, within each of the three classes.

For example, you could:

  • Declare Dog.Bark as virtual
  • Declare Terrier.Bark as override
  • Declare Yorkshire.Bark as new


About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: