Ents-mirror/Example/Ents.playground/Contents.swift

//: Playground - noun: a place where people can play

import UIKit
import Ents
import PlaygroundSupport

//var q2: FIFO<Int> = [1,2,3]
//
//q2.startIndex
//q2.endIndex
//q2.count
//
//q2[0]
//q2[1]
//q2[2]
//
//
//q2.enqueue(4)
//q2.count
//q2.endIndex
//q2[3]
//
//q2.dequeue()
//q2
//q2.dequeue()
//q2
//q2.dequeue()
//q2
//q2.dequeue()
//q2
//q2.dequeue()
//q2

//let list: List<Int> = [1,2,3,4]
//list.car()

//list[0...2]

//var l = list
//l.push(5)
//l.pop()
//l
//l.pop()
//l
//l.pop()
//l
//l.pop()
//l
//l.pop()
//l
//l.pop()
//l


//list.car()
//list.cdr().car()
//list.cdr().cdr().car()
//list.cdr().cdr().cdr().car()
//list.cdr().cdr().cdr().cdr()


struct Person {
    let first: String
    let last: String
    let yearOfBirth: Int
}

let people = [
    Person(first: "Jo", last: "Smith", yearOfBirth: 1970),
    Person(first: "Joe", last: "Smith", yearOfBirth: 1970),
    Person(first: "Joe", last: "Smyth", yearOfBirth: 1970),
    Person(first: "Joanne", last: "smith", yearOfBirth: 1985),
    Person(first: "Joanne", last: "smith", yearOfBirth: 1970),
    Person(first: "Robert", last: "Jones", yearOfBirth: 1970)
]

//let sortByYearAlt: SortDescriptor<Person>
//    = sortDescriptor(key: { $0.yearOfBirth }, <)
//print(people.sorted(by: sortByYearAlt))

let sortByYear: SortDescriptor<Person>
    = sortDescriptor(key: {$0.yearOfBirth})

let sortByFirstName: SortDescriptor<Person>
    = sortDescriptor(key: {$0.first}, String.localizedCaseInsensitiveCompare)

let sortByLastName: SortDescriptor<Person>
    = sortDescriptor(key: {$0.last}, String.localizedCaseInsensitiveCompare)

let combined: SortDescriptor<Person> =
    combine(sortDescriptors: [sortByLastName, sortByFirstName, sortByYear])
//print(people.sorted(by: combined))