本文介绍了如何比较两个对象数组?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个A类:
class A {
var identifier: String?
var quantity: Int = 0
}
两个A实例数组:
var array1: [A] = [a1, a2, a3, a4]
var array2: [A] = [a5, a6, a7, a8]
我不知道哪种方式最好check:
array1 == array2 if a1.identifier == a5.identifier,a2.identifier == a6.identifier,a3.identifier == a7.identifier,a4.identifier == a8 Swide中的.identifier
。
I don't know which is the best way to check:array1==array2 if a1.identifier == a5.identifier, a2.identifier == a6.identifier, a3.identifier==a7.identifier, a4.identifier==a8.identifier
in Swift.
请帮帮我...
推荐答案
假设您的数据如下:
struct Person
{
let name: String
let id: Int
}
var people1 = [
Person(name: "Quang Hà", id: 42),
Person(name: "Lý Hải", id: 23),
Person(name: "Maria", id: 99)
]
var people2 = [
Person(name: "Maria yyy", id: 99),
Person(name: "Billy", id: 42),
Person(name: "David", id: 23)
]
这是方法比较ID为两个人的数组:
This is the method to compare two arrays of people with id:
func areArrayPeopleEqual(people1:[Person], people2: [Person]) -> Bool {
var array1 = people1
var array2 = people2
// Don't equal size => false
if array1.count != array2.count {
return false
}
// sort two arrays
array1.sortInPlace() { $0.id > $1.id }
array2.sortInPlace() {$0.id > $1.id }
// get count of the matched items
let result = zip(array1, array2).enumerate().filter() {
$1.0.id == $1.1.id
}.count
if result == array1.count {
return true
}
return false
}
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