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The power of well-designed code

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#ax2012

#codemaintenance

#methodextraction

#readability

#refactoring

Dynamics 365 Finance

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Oct 29, 2022

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AI Summary

  • The article discusses a refactoring project in which the author had to adjust a piece of logic implemented as a method with over two thousand lines.
  • The code was found to be unmaintainable and difficult to understand.
  • Upon further exploration, the author discovered that the method consisted of many almost identical blocks of code, with select statements varying slightly in conditions.
  • The developer did not know how to write queries dynamically and did not think about extracting the remaining code to a separate method.
  • As a result, the method was duplicated multiple times with slight variations in behavior.
  • The author extracted the logic to a method that took a query as a parameter and created a collection of Query objects to execute them one by one.
  • The queries were created by methods with names describing the business scenario.
  • The refactored code was easier to understand and even non-programmers could review it to ensure it met business requirements.

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