2019-04-10-12-Swift5

Testing interger multiples

Output:
It's multiple of 5

Escaping Raw strings

var rawText = #"""
Hey! I can write anything "here"
without using double double quotes \#(someNumber)
"""#

Output:
Hey! I can write anything "here"
without using double double quotes 10

isNumber to check a char value

var text = "SK10"
for char in text {
    print("Is '\(char)' number? \(char.isNumber)")
}

Output:
Is 'S' number? false
Is 'K' number? false
Is '1' number? true
Is '0' number? true

Similarly, isASCII, isLetter, isSymbol, isSymbol etc. are available. Go ahead & give a try.

Use 'KeyValuePairs' instead 'DictionaryLiteral'

// Swift 4.2 Code
let data: DictionaryLiteral = ["name": "Sagar", "post": "iOS App Dev"]
print(data)

// Swift 5 code
let newData: KeyValuePairs = ["name": "Sagar", "post": "iOS App Dev"]
print(newData)

Output:
["name": "Sagar", "post": "iOS App Dev"]
["name": "Sagar", "post": "iOS App Dev"]

compactMapValues

In following example, with compactMapValues, I was able to convert [String: String] to [String: Int]

let someData = ["avacado": "five", "banana": "10", "mango": "5", "lime": "30"]
let values = someData.compactMapValues(Int.init)
print("Values are \(values)")

Output:
Values are ["mango": 5, "lime": 30, "banana": 10]

Future Enum cases

enum Vehicle {
    case car, bike, truck
}
let myVehicle: Vehicle = .car
switch myVehicle {
    case .car:
        print("Driving a car")
    case .bike:
        print("Riding a bike")
    @unknown default: 
        print("Driving a vehicle")
}