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principles:information_expert [2012-12-22 10:16] – external edit 127.0.0.1principles:information_expert [2020-12-08 13:44] – old revision restored (2012-12-10 14:44) 95.217.118.98
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-====== Information Expert (IE) ======+====== Information Expert ======
  
 ===== Variants and Alternative Names ===== ===== Variants and Alternative Names =====
  
-  * Expert 
   * Tell Don't Ask   * Tell Don't Ask
   * Do It Myself   * Do It Myself
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-===== Principle Statement =====+===== Definition =====
  
 Assign a responsibility to this [[glossary:module]] which has the largest subset of the required information. Assign a responsibility to this [[glossary:module]] which has the largest subset of the required information.
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 When this principle is not adhered to, then a module has a responsibility for which it is lacking some information. So in order to fulfill the task the module has to first acquire the needed information by invoking other modules. This increases the dependencies between the modules (which may lead to[[glossary:ripple effects]]). When this principle is not adhered to, then a module has a responsibility for which it is lacking some information. So in order to fulfill the task the module has to first acquire the needed information by invoking other modules. This increases the dependencies between the modules (which may lead to[[glossary:ripple effects]]).
- 
- 
-===== Strategies ===== 
  
  
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 ===== Evidence ===== ===== Evidence =====
 /* Comment out what is not applicable and explain the rest: */ /* Comment out what is not applicable and explain the rest: */
-/* +[[wiki:Proposed]] 
-  * [[wiki:Proposed]] +[[wiki:Examined]] 
-  * [[wiki:Examined]] +[[wiki:Accepted]] 
-  * [[wiki:Accepted]] +[[wiki:Questioned]] 
-  * [[wiki:Questioned]] +
-*/+
  
 ===== Relations to Other Principles ===== ===== Relations to Other Principles =====
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 ==== Principle Collections ==== ==== Principle Collections ====
  
-{{page>collections:OOD Principle Language#Box}} 
 {{page>collections:GRASP#Box}} {{page>collections:GRASP#Box}}
  
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   * [[wp>GRASP_(object-oriented_design)#Information_Expert]]   * [[wp>GRASP_(object-oriented_design)#Information_Expert]]
-  * Andrew Hunt and David Thomas: //[[http://www.ccs.neu.edu/research/demeter/related-work/pragmatic-programmer/jan_03_enbug.pdf|The Art of Enbugging]]// 
  
principles/information_expert.txt · Last modified: 2021-10-18 21:25 by christian