principles:law_of_demeter
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principles:law_of_demeter [2013-02-18 17:24] – external edit 127.0.0.1 | principles:law_of_demeter [2021-10-18 21:52] (current) – +++ restored +++ christian | ||
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/* fill in contexts here: */ | /* fill in contexts here: */ | ||
* [[contexts: | * [[contexts: | ||
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===== Principle Statement ===== | ===== Principle Statement ===== | ||
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==== Generalizations ==== | ==== Generalizations ==== | ||
- | * [[principles:Low Coupling]]: The goal of LoD is to reduce coupling by reducing the knowledge of a class about other classes. | + | * [[Low Coupling]] |
- | * [[principles:Tell, Don't Ask]] | + | * [[Tell, Don't Ask/ |
==== Specializations ==== | ==== Specializations ==== | ||
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==== Contrary Principles ==== | ==== Contrary Principles ==== | ||
- | * [[principles:More Is More Complex]]: Adhering to the Law of Demeter often results in additional methods. | + | * [[More Is More Complex]] |
- | * [[principles:Low Coupling]]: Adhering to the Law of Demeter may create tramp couplings which are bad. | + | * [[Low Coupling]] |
- | * [[principles:High Cohesion]]: Adhering to the Law of Demeter often results in additional methods that mirror methods of aggregated objects. As these objects have other responsibilities, | + | * [[High Cohesion]] |
==== Complementary Principles ==== | ==== Complementary Principles ==== | ||
+ | |||
+ | * [[Model Principle]] (MP): Adhering to LoD may result in additional methods in aggregating classes. MP tells how they should look like. | ||
+ | |||
==== Principle Collections ==== | ==== Principle Collections ==== | ||
- | ===== Example | + | ===== Examples |
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* Phil Haack: // | * Phil Haack: // | ||
* [[http:// | * [[http:// | ||
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+ | ===== Discussion ===== | ||
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+ | Discuss this wiki article and the principle on the corresponding [[talk: | ||
principles/law_of_demeter.1361204694.txt.gz · Last modified: 2013-05-19 22:10 (external edit)