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principles:low_coupling [2013-02-11 12:14] – relations, strategies christianprinciples:low_coupling [2021-09-02 20:34] – old revision restored (2021-03-29 03:10) 65.21.179.175
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   * [[Tell, don't Ask/Information Expert]] (TdA/IE): Adhering to the information expert principle leads to low coupling as there is less need to communicate with other modules to get the necessary information.   * [[Tell, don't Ask/Information Expert]] (TdA/IE): Adhering to the information expert principle leads to low coupling as there is less need to communicate with other modules to get the necessary information.
   * [[Constantine's Law]]: Constantine's Law is just the combination of the two principles LC and HC.   * [[Constantine's Law]]: Constantine's Law is just the combination of the two principles LC and HC.
 +  * [[Dependency Inversion Principle]] (DIP): LC aims at reducing the dependencies to other modules. One way to do so is to only depend on abstractions. DIP is about this aspect.
  
 ==== Contrary Principles ==== ==== Contrary Principles ====
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   * [[Model Principle]] (MP): LC aims at reducing the dependencies to other modules. So a module shall depend on only a few others. MP now tells which dependencies are allowed and which aren't.   * [[Model Principle]] (MP): LC aims at reducing the dependencies to other modules. So a module shall depend on only a few others. MP now tells which dependencies are allowed and which aren't.
-  * [[Dependency Inversion Principle]] (DIP): LC aims at reducing the dependencies to other modules. One way to do so is to only depend on abstractions. DIP is about this aspect. 
-  * [[Principle of Separate Understandability]] (PSU): One kind of couplings are logical couplings. These are especially hard to detect but should be avoided. PSU describes another aspect of these logical couplings. 
   * [[Information Hiding/Encapsulation]] (IH/E): Higher forms of couplings (especially content couplings) break encapsulation.   * [[Information Hiding/Encapsulation]] (IH/E): Higher forms of couplings (especially content couplings) break encapsulation.
  
principles/low_coupling.txt · Last modified: 2021-10-18 21:49 by christian