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


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documentation/current/method/invitation-eiffel-i2e/i2e-genericity.wiki
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[[Property:title|9 Genericity]]
[[Property:link_title|I2E: Genericity]]
[[Property:weight|-6]]
[[Property:uuid|091c0b65-73de-b454-b3f2-d8752983780e]]
Building software components (classes) as implementations of abstract data types yields systems with a solid architecture but does not in itself ensure reusability and extendibility. Two key techniques address the problem: generosity (unconstrained or constrained) and inheritance. Let us look first at the unconstrained form.
To make a class generic is to give it '''formal generic parameters''' representing as unknown types, as in these examples from EiffelBase, an open-source library covering basic data structures and algorithms: