principles:liskov_substitution_principle
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principles:liskov_substitution_principle [2021-09-02 18:26] – old revision restored (2021-05-11 22:03) 65.21.179.175 | principles:liskov_substitution_principle [2021-10-18 21:50] (current) – +++ restored +++ christian | ||
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===== Description ===== | ===== Description ===== | ||
- | Object-oriented programming languages | + | Object-oriented programming languages |
- | But the programming language does not enforce that the subtype | + | The programming language does not enforce that the subtype behaves like the supertype. Method '' |
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* Only strengthen invariants in subclasses; never weaken them | * Only strengthen invariants in subclasses; never weaken them | ||
- | * Only waken preconditions when overriding methods | + | * Only weaken |
* Only strengthen postconditions when overriding methods | * Only strengthen postconditions when overriding methods | ||
* Use Delegation instead of Inheritance | * Use Delegation instead of Inheritance | ||
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===== Description Status ===== | ===== Description Status ===== | ||
/* Choose one of the following and comment out the rest: */ | /* Choose one of the following and comment out the rest: */ | ||
- | [[wiki: | + | /*[[wiki: |
- | /*[[wiki: | + | [[wiki: |
/ | / | ||
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* Barbara H. Liskov , Jeanette M. Wing: // | * Barbara H. Liskov , Jeanette M. Wing: // | ||
* Barbara H. Liskov , Jeanette M. Wing: // | * Barbara H. Liskov , Jeanette M. Wing: // | ||
+ | |||
+ | ===== Discussion ===== | ||
+ | |||
+ | Discuss this wiki article and the principle on the corresponding [[talk: | ||
+ |
principles/liskov_substitution_principle.txt · Last modified: 2021-10-18 21:50 by christian