Best practices

• Use functions to organize code.
• Build the main function on a high abstraction level, explaining the functionality of the package.
• Start the main function with guard clauses: if the input is not valid or further execution of the package is not needed, return early.
• Keep functions short and simple and use clear, descriptive function names.
• Keep code inside a function on the same abstraction level.
• Give all information a function needs through its parameters.