Getting started with generics

Remarks#

Generics allow you to define placeholders for exact types in definitions for classes, interfaces and/or methods.

Possible subtopics:

Class (and structure) generics
Interface generics
Method generics
Constraints
Covariance and contravariance

Availability

Generics became available with:

.NET Framework 2.0 (and version 2.0 of the compact framework).
Java in version 5.
Common Lisp since it was standardised …