User Tools

Site Tools


principles:single_level_of_abstraction

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
principles:single_level_of_abstraction [2021-09-02 10:46]
65.21.179.175 old revision restored (2021-05-11 22:26)
principles:single_level_of_abstraction [2021-10-18 22:03] (current)
christian +++ restored +++
Line 1: Line 1:
 ====== Single Level of Abstraction (SLA) ====== ====== Single Level of Abstraction (SLA) ======
- 
 ===== Variants and Alternative Names ===== ===== Variants and Alternative Names =====
 +
  
   * One Level of Abstraction   * One Level of Abstraction
Line 12: Line 12:
 ===== Principle Statement ===== ===== Principle Statement =====
  
-Each method should be written in terms of a single level of abstraction+Each method should be written in terms of a single level of abstraction.
  
  
Line 23: Line 23:
 A further indicator for a missing method is the combination of a blank line, a comment and a block of code. In most of the cases the code block should go to a new private method. This also makes the comment obsolete as the new method carries a name which typically resembles the comment.  A further indicator for a missing method is the combination of a blank line, a comment and a block of code. In most of the cases the code block should go to a new private method. This also makes the comment obsolete as the new method carries a name which typically resembles the comment. 
  
-Sometimes extracting the method would result in the new method having a large number of parameters. Alternatively the parameters could be converted to fields of the class. But this would often result in bad [[glossary:cohesion]]. Because of that in such a case extracting a new class is the next step in adhering to the principle.+Sometimes extracting the method would result in the new method having a large number of parameters. Alternatively the parameters could be converted to fields of the class. But this would often result in bad [[glossary:cohesion]]. Because of that in such a case extracting a new class is the next step in adhering to the principle.  
  
 ===== Rationale ===== ===== Rationale =====
Line 135: Line 135:
  
 Discuss this wiki article and the principle on the corresponding [[talk:principles:Single Level of Abstraction|talk page]]. Discuss this wiki article and the principle on the corresponding [[talk:principles:Single Level of Abstraction|talk page]].
 +
principles/single_level_of_abstraction.1630572394.txt.gz · Last modified: 2021-09-02 10:46 by 65.21.179.175