CalculatorApp

Some facts

• simple calculator app
• only supports addition at the moment
• supports reaaaaaaally big numbers (bigger than a googol)
• in theory the maximum number that can be stored is a one with 2,147,483,648 zeros minus one
• in practise the size of the number is limited by the size of the text-container in the ui
• app architecture is Model View Intent (MVI)

Interesting classes

• BigNumberCalculator implementation
• BigNumberCalculator implementation unit tests
• Activity for Main Screen
• View Model for Main Screen
• ViewState, ViewEffects and ViewEvents for Main Screen

External resources

• kotlin language by JetBrains
• androidx libraries by Google
• junit for unit testing
• personal library with some android architecture utilities
  • Github
• mvi architecture implementation by Rohit Surwase
  • Github
  • Medium post