swift 数组去重 有标识的

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

import UIKit

class Book {

var title:String = ""

init(title:String, hasUpdate:Bool) {

self.title = title

self.hasUpdate = hasUpdate

}

}

var array:[Book] = [Book]()

array.append(Book(title:"Cocoa"))

array.append(Book(title:"Cocoa"))

array.append(Book(title:"Swft"))

array.append(Book(title:"Cocoa"))

array.append(Book(title:"Coco"))

var result:[Book] = []

for (idx, obj) in array.enumerated() {

var bool : Bool = false

for (index, object) in result.enumerated() {

if obj.title == object.title {

bool = true

}

}

if !bool {

result.append(obj)

}

}

for item in result {

print(item.title)

}

打印结果 ： Cocoa Swft Coco

后面的覆盖前面的

let array = [1, 2, 1,12, 2, 12]

var dictInts = Dictionary()

for number in array {

dictInts[String(number)] = number

}

var result = [Int]()

for value in dictInts.values {

result.append(value)

}

print(result)

打印结果 ：[2, 1, 12]