When a method has too many parameters? [closed]

by

There is no clear limit, but I am uncomfortable with more than 3-4 parameters. AFAIR Uncle Bob Martin in Clean Code recommends max 3.

There are several refactorings to reduce the number of method parameters (see Working Effectively with Legacy Code, by Michael Feathers for details). These come to my mind:

  • encapsulate many related parameters into a single object (e.g. instead of String surName, String firstName, String streetAddress, String phoneNumber pass a Person object containing these as fields)
  • pass parameters in the constructor or other method calls prior to the invocation of this method

More Related Contents:

  1. Pass by reference or pass by value? [closed]
  2. Difference between parameter and argument [duplicate]
  3. Arguments or parameters? [duplicate]
  4. What’s your most controversial programming opinion?
  5. What is a callback function?
  6. Is a GUID unique 100% of the time?
  7. What is an idempotent operation?
  8. What are sessions? How do they work?
  9. What’s your favorite “programmer” cartoon?
  10. What does it mean to “program to an interface”?
  11. Real world use cases of bitwise operators [closed]
  12. “Parameter” vs “Argument” [duplicate]
  13. What is name mangling, and how does it work?
  14. Given an integer, how do I find the next largest power of two using bit-twiddling?
  15. Why don’t languages raise errors on integer overflow by default?
  16. Under what circumstances are linked lists useful?
  17. Anemic Domain Model: Pros/Cons
  18. Is using a lot of static methods a bad thing?
  19. How to merge two files consistently line by line
  20. Why does division by zero in IEEE754 standard results in Infinite value?
  21. Is Method Overloading considered polymorphism? [closed]
  22. What is an invariant?
  23. Fluent Interfaces – Method Chaining
  24. ICalendar and event updates not working in Outlook
  25. Should we compare floating point numbers for equality against a *relative* error?
  26. When is a do-while appropriate?
  27. How can I find the smallest difference between two angles around a point?
  28. Purity vs Referential transparency
  29. Find all complete sub-graphs within a graph
  30. Why are leading zeroes used to represent octal numbers?

Leave a Comment