regularberry

override fun onBindViewHolder(holder: ViewHolder,
                              position: Int,
                              payloads: MutableList<Any>) {
    if (!payloads.isEmpty()) {
        // Because these updates can be batched,
        // there can be multiple payloads for a single bind
        when (payloads[0]) {
            Payload.FAVORITE_CHANGE -> {
                // Change only the "favorite" icon,
                // leave background image alone:

regularberry

var dict: [String: Any?] = ["first": nil, "second": 2]

if let val = dict["first"] {
    print(val)
}
// Output: nil

dict["first"] = nil
if let val = dict["first"] {
    print(val)

regularberry

dict["first"] = .some(nil)
if let val = dict["first"] {
    print(val)
}
// prints ‘nil’

regularberry

class MutableClass {
    var val: Int?
    
    init(val: Int = 0) {
        self.val = val
    }
    
    func update(newVal: Int) {
        val = nil
        val = newVal

regularberry

func testMutableClass() {
    let group = DispatchGroup()
    let obj = MutableClass()

    for _ in 0...1000 {
        group.enter()

        DispatchQueue.global().async {
            let sleepVal = arc4random() % 1000
            usleep(sleepVal)

regularberry

let poet = PoetFile(list: [], generatorInfo: nil)
print(poet.fileContents)


// OUTPUT
---------
//
//
//  Generated by SwiftPoet on 6/29/18
//

regularberry

let structBuilder = StructSpec.builder(for: "TestStruct")
let fieldBuilder = FieldSpec.builder(for: "myField", type: .StringType, construct: nil)
structBuilder.add(field: fieldBuilder.build())
let poet = PoetFile(list: [structBuilder.build()], generatorInfo: nil)
print(poet.fileContents)


/// OUTPUT
-----------
//

regularberry

let structBuilder = StructSpec.builder(for: "TestStruct")
let fieldBuilder = FieldSpec.builder(for: "myField", type: .StringType, construct: nil)
structBuilder.add(field: fieldBuilder.build())

let methodBuilder = MethodSpec.builder(for: "doTheThing")
methodBuilder.add(modifier: .Public)

let code = """
print("I'm doing the thing!")
"""

regularberry

let methodBuilder = MethodSpec.builder(for: "doTheThing")
methodBuilder.add(modifier: .Public)

let code = """
for _ in 0..<howManyTimes {
    print("I'm doing the thing!")
}
"""
methodBuilder.add(codeBlock: code.toCodeBlock())

regularberry

let url = URL(string: "http://0.0.0.0")!
let data = "Secret message".data(using: .utf8)
var request = URLRequest(url: url)
request.httpBody = data
let task = URLSession.shared.dataTask(with: request) { data, response, error in
    print("We're all done here")
}
task.resume()