XPKit

THE framework for doing Exceptional Programming in Swift

What is Exceptional Programming

• All functions throw exceptions (throws)
• Functions never return (-> Never {)

Functions look like this:

func name(...)throws->Never{...}

Importing

import XPKit

dependencies:[.package(url:"https://github.com/ExceptionalProgramming/XP-Swift",
from:"1.0.0")],targets:[.target(
name:"",
dependencies:["XPKit"]),]

Exceptions

Exceptions are a class that should be thrown

• Exception
  • ProgramTerminated
  • RuntimeException
    • FatalException
  • ValueException

All do/catch blocks should rethrow any unhandled exceptions

...}catchleterror{throw error }

main()

do{try...}catch _ as ProgramTerminated{}catchlet error{throw error }

Getting values

We understand that not all code is exceptional so we provide get<T>(from:) -> T which will extract the value from the thrown ValueException<T>

Addition

There is a provided add<T: Addable> function which throws the sum of all values. The Int and UInt families both conform to Addable