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* ANY is the root of the inheritance tree, but not of the conformance tree. * Non-conforming inheritance. See [[Conforming and non-conforming inheritance]]

The traditional inheritance mechanism introduced from the very beginning of Eiffel is still present. The sum of the inheritance graph and the insertion graph must be an acyclic directed graph.

* inherits all the visitor classes of the framework (conforming inheritance) ...om the [[library_class:VISITOR|<tt>VISITOR</tt>]] class itself (conforming inheritance)

* Non-conforming inheritance (but using '''insert''' instead of '''inherit {NONE}'''); see [[Typing poli * [[task:12662|generic inheritance]]

...oving dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. == Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==

'''3.1''' [[Inheritance]]

...l language, expressivity is in the power of concepts. For example multiple inheritance and genericity are very powerful concepts, as are static type and dynamic t

...the syntax tree in the light of a particular type (think generic classes, inheritance). The original tree is provided by the parser.

So the scope for redefinition varies in the same direction as the inheritance relationship, hence the name '''co'''variance. ...ariance rule because that rule corresponds to the most useful way of using inheritance.

The following figure shows their inheritance relationship:

...perform many validity checks of a given class (syntax, exportation rules, inheritance, etc.).

...<code>x</code>; and in fact a cast can not be done safely, because due to inheritance (possibly multiple), the attribute can be at different offsets in the struc