Learning Functional Programming in Go

Refactoring - the book

Ever read the book Refactoring? It covers the topic of refactoring long parameter lists.

The following points are made:

• Methods can query other objects' methods internally for data required to make decisions
• Methods should depend on their host class for needed data
• We should pass one or more objects to simplify our call signature
• We should use a technique called replace parameter with method to reduce the number of required parameters
• Pass a whole object with required attributes to reduce the number of required parameters
• Use a parameter object when we have unrelated data elements to pass
• We can send separate parameters when we do not want to create a dependency on a larger parameter object; this is an exception and ...