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Date:2008-09-19T07:54:43.000000Z


git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@25 abb3cda0-5349-4a8f-a601-0c33ac3a8c38
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2008-09-19 07:54:43 +00:00
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documentation/current/method/invitation-eiffel-i2e/i2e-combining-genericity-and-inheritance.wiki
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[[Property:title|12 Combining Genericity and Inheritance]]
[[Property:link_title|I2E: Combining Genericity and Inheritance]]
[[Property:weight|-3]]
[[Property:uuid|912e4c38-9add-e478-59c3-5c10aa75d784]]
Genericity and inheritance, the two fundamental mechanisms for generalizing classes, may be combined in two fruitful ways.
The first technique yields '''polymorphic data structures'''. Assume that in the generic class <code> LIST [ G ] </code> the insertion procedure <code> put </code> has a formal argument of type <code> G </code>, representing the element to be inserted. Then with a declaration such as