layout, title, folder, permalink, categories, tags
| layout | title | folder | permalink | categories | tags | ||
|---|---|---|---|---|---|---|---|
| pattern | Marker Interface | marker | /patterns/marker/ | Design |
|
Intent
Using empty interfaces as markers to distinguish special treated objects.
Applicability
Use the Marker Interface pattern when
- you want to identify the special objects from normal objects (to treat them differently)
- you want to mark that some object is available for certain sort of operations