Software Design/Extract generic components

Related

• Require the least powerful abstract class you need to implement a function
• Create pure functions

Sources

• A Philosophy of Software Design, "Make code just a little generic"
• https://softwareengineering.stackexchange.com/questions/361605/should-the-solution-be-as-generic-as-possible-or-as-specific-as-possible
• http://degoes.net/articles/insufficiently-polymorphic