Custom Higher Order Function Filter Even Number

An Any and AnyObject Difference

 

 

 if an Any Declare 

 let anyValues: [Any] = [1, "two", 3, "four", ["name": "praveen"]]

 anyValues.forEach { (anyValue) in

    switch anyValue {

        

    case is Int:

        print("\(anyValue) is an Int!")

    case is String:

        print("\(anyValue) is String!")

    case is [String: Any]:

        print("\(anyValue) is Discnary!")

    default:

        print("\(anyValue) is de!")

        

    }

 }

Output => 

 1 is an Int!

 two is String!

 3 is an Int!

 four is String!

 ["name": "praveen"] is Discnary!

 if an AnyObject Declare 

let anyValues: [AnyObject] = [1, "two", 3, "four", ["name": "praveen"]]

Error==> Type of expression is ambiguous without more context

Custom Higher Order Function Filter Even Number 

 func coustomFilterNumber<T>(_ inputArray: [T], _ condition: (T) -> Int)-> [T]{

    

    var result = [T]()

    

    for element in inputArray{

        if (condition(element) != 0){

            result.append(element)

        }

    }

    

    return result

    

 }

 let nums = [2, 5, 10, 4, 6, 7, 11]

 let num = coustomFilterNumber(nums, {$0 % 2})

 print(num)

 Output -- > [5, 7, 11]

  Custom function to apply multiple conditions?

struct Person {

    let name: String

    let age: Int

    let isEmp: Bool

}

func EmpFilter(_ persons: [Person], _ filters: [(Person) -> Bool]) -> [Person]{

    

    var result: [Person] = []

    

    for person in persons{

        var shouldInc = true

    

        for filter in filters{

            if !filter(person){

                shouldInc = false

                break

            }

        }

        if shouldInc{

            result.append(person)

        }

    }

    return result

}

let people = [

    Person(name: "Alexander", age: 28, isEmp: true),

    Person(name: "Bob", age: 22, isEmp: false),

    Person(name: "Catalina", age: 35, isEmp: true),

    Person(name: "Diana", age: 40, isEmp: false),

    Person(name: "Emly", age: 19, isEmp: true)

]

let filter: [(Person) -> Bool] = [

    {$0.age > 25},

    {$0.isEmp},

    {$0.name.count > 5}

]

let filterPeson = EmpFilter(people, filter)

for feson in filterPeson{

    print("\(feson.name), Age: \(feson.age), Employed: \(feson.isEmp)")

}