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What would you like to do?
A Swift Playground for payroll. I have my reasons ...
// Swift playground experimenting with payroll.
// (I have my reasons.)
println("Hello")
import Foundation
// This stuff sets rounding to two places after decimal
var mode = NSRoundingMode.RoundPlain
var handler = NSDecimalNumberHandler(
roundingMode: mode,
scale: 2,
raiseOnExactness: true,
raiseOnOverflow: true,
raiseOnUnderflow: true,
raiseOnDivideByZero: true)
NSDecimalNumber.setDefaultBehavior(handler)
// rounding function saved for reference
// no longer necessary now that I've set default,
// might come in handy for other than two digit rounding
func round(n: NSDecimalNumber) -> NSDecimalNumber {
return n.decimalNumberByRoundingAccordingToBehavior(handler)
}
// operator extensions for convenient decimal
func dec(n: Double) -> NSDecimalNumber {
return NSDecimalNumber(double: n)
}
@infix func +(left: NSDecimalNumber, right: NSDecimalNumber) -> NSDecimalNumber {
return left.decimalNumberByAdding(right)
}
@infix func -(left: NSDecimalNumber, right: NSDecimalNumber) -> NSDecimalNumber {
return left.decimalNumberBySubtracting(right)
}
@infix func /(left: NSDecimalNumber, right: NSDecimalNumber) -> NSDecimalNumber {
return left.decimalNumberByDividingBy(right)
}
@infix func *(left: NSDecimalNumber, right: NSDecimalNumber) -> NSDecimalNumber {
return left.decimalNumberByMultiplyingBy(right)
}
// useful constants
let twelve = dec(12.0)
let taxRate = dec(0.25)
let zero = dec(0)
// classes
class Person {
let name: String
let payRate: NSDecimalNumber
init (name: String, rate: Double) {
self.name = name
payRate = dec(rate)
}
}
class PayStub {
let person: Person
var salary = zero
var grossPay = zero
var fedTax = zero
var deductions = zero
var netPay = zero
init(person: Person) {
self.person = person
}
func pay() {
salary = person.payRate / twelve
grossPay = zero
grossPay = grossPay + salary
fedTax = grossPay * taxRate
deductions = zero
deductions = deductions + fedTax
netPay = grossPay - deductions
}
}
var person = Person(name: "Jones", rate: 50000)
var jones = person
var smith = Person(name: "Smith", rate: 30000)
var stub = PayStub(person: person)
stub.pay()
stub.person.name
stub.salary
stub.grossPay
stub.fedTax
stub.deductions
stub.netPay
/*var inc = dec(0.01)
var tot = zero
for i in (0..100) {
tot = tot + inc
}
tot
tot == dec(1.0)*/
// how to find the comma, god save me
var test = "123, Jones"
var j = test.rangeOfString(",")
var s = j.startIndex
var e = j.endIndex
test[s...e]
// maybe for our purposes we can just keep data in arrays
var jonesrecord = [1, "jones"]
var smithrecord = [2, "smith"]
// or dictionaries. yeah, that's it, dictionaries
var personnel = [1: jones, 2: smith]
personnel[2] // returns Person smith
@bytor99999

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@bytor99999 bytor99999 commented Oct 14, 2015

Awesome stuff. Thanks

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