Miscellanies

• How to solve it
  • Implementing String.map as an instance of String.mapi
  • Implementing String.mapi as an instance of String.init
  • Implementing String.map as an instance of String.init
  • Aftermath
  • Version
• From the summatorial function to the summation operator
  • Resources
  • The summatorial function
  • The sum function
  • The summation operator
  • A stepping stone
  • The summation operator, continued
  • After hours
  • Resources
  • Version