In order to write readable code, easily maintainable code, we will read about some interesting websites:

• https://medium.com/better-programming/the-art-of-refactoring-5-tips-to-write-better-code-3bc1f6f7689

  • Get rid of switch statements –> Use Object literal (in Javascript) or use Map.

  • Make our conditional descriptive –> Use function to make our complicated conditions easy readable, understandable.

  • Use guard clauses to avoid nested if statements –> Use early return to make our code easy to read.

  • Avoid code duplication.

  • Functions should only do one thing.

• https://medium.com/@dangoslen/my-top-4-patterns-for-writing-simple-code-466705ac0b97

• https://medium.com/qualyteam-engineering/chain-of-responsibility-in-a-real-world-refactoring-example-a31486862c46

  Use Chain of Responsibility to make our conditionals such as if-else statements easy to maintain by separating each conditional to each subclass of Handler - parent class.

  A problem happens when we split our conditionals is that we have to share data context between subclass handlers.

• https://www.codingdojo.com/blog/clean-code-techniques

  • Keep it simple.

  • Understand your code.

  • Comments Are Your New Best Friends.

  • Don’t Repeat Yourself (DRY).

  • Indent Your Code.

  • Naming Convention.

  • Explore.

  • Use Your Brain.

  • Test Runs.

  • Practice Your Art.

• https://www.baeldung.com/java-replace-if-statements

  • Factory Class

  • Use of Enums

  • Command Pattern

  • Rule Engine