Parametric Polymorphism
"Inheritance" is run time poluymorphism.
"Generic" is parametric poluymorphism. poluymorphism at complie time.
- A list of any types
- A list of some contraint types
3 Matching Annotations
- Jan 2021
-
www2.cs.sfu.ca www2.cs.sfu.ca
-
- Feb 2019
-
en.wikipedia.org en.wikipedia.org
-
for example, comments and identifiers
Some better illustrated examples can be found in UBCx: SoftConst2x - Software Construction: Object Oriented Design's course lecture on Coupling.
-
- Jan 2019
-
courses.edx.org courses.edx.org
-
If one object is part of another object, then we use a diamond at the start of the arrow (next to the containing object), and a normal arrow at the end.
Another way of thinking of this is, if the original owner (source) object and the owned (target) object share the same life cycle -- that is, the owned exists only when the owner does -- we say that the owner aggregates owned object(s). They share a whole-part relationship.
What I did like very much about the video, was when the instructor pointed out that there's a small fallacy: aggregation, in OOD, does not really imply that owned object(s) must be a list.
-