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//
//  main.m
//  test
//
//  Created by Rob Napier on 4/5/19.
//

#import <Foundation/Foundation.h>

@interface MyClass: NSObject

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Item #: SCP-10791

Object Class: Safe

Special Containment Procedures: SCP-10791 must be maintained within the BMP (Basic Multilingual Plane) at all times. Removal from the BMP may cause disaggregation of the component parts, increasing nearby values by 2. While this is not considered a memetic hazard, the accounting department has made it clear that they will not accept non-standard operators wandering the halls since Incident ██/██/███ when [REDACTED].

Description: SCP-10791 is the result of unauthorized experimentation with SCP-889, SCP-1313, and three members of the Unicode Technical Committee. The less that is said about that, the better. What happens several miles north of ███████, Montana, USA....sometimes requires containment.

Since ██/██/2002, SCP-10791 has been contained in the ███████ Mathematical Operators block. Its name and appearance change regularly, though always an unlikely combination of symbols. Critic

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// https://stackoverflow.com/questions/54764362/swift-array-of-tuples-with-generic-tuple-elements/54768030

struct AnyRealmCollectionBox<Element> {
    public func index(after i: Int) -> Int { return i + 1 }
    public func index(before i: Int) -> Int { return i - 1 }

    private let _realm: () -> Realm?
    public var realm: Realm? { return _realm() }

    private let _isInvalidated: () -> Bool

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import Foundation

let json = Data("""
{
  "user_name":"Mark",
  "user_info":{
    "b_a1234":"value_1",
    "c_d5678":"value_2"
  }
}

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import Foundation

class Singleton: NSObject {
    static let sharedInstance = Singleton()

    @objc dynamic var aProperty = false

    func updateDoesntWork() {
        aProperty = !aProperty
    }

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class Fruit {}
class Apple: Fruit {}
class Orange: Fruit {}

class Basket<T> where T: Fruit
{
    var items: [T] = []

    func add(_ item: T) {
        items.append(item)

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import java.security.SecureRandom;

// Targeting Android SDK 19
// Goal is a (cryptographic) random long between 2^32 ..< 2^62.
// Ultimately I want to pick ~10M values with predictible and very low liklihood of collision (~0.001% Birthday Attack).
// Approach is to compute a random upper 32 bits between 1..<2^30 and add a lower 32-bits 0..<2^32.
// Need to be careful of lower 32 bits being treated as negative, since that would skew the results out of range.

public class MyRandom {
    public static void main(String args[]) {

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// From https://stackoverflow.com/questions/54129682/use-swift-codable-to-decode-json-with-values-as-keys
import Foundation

let json = Data("""
{
  "7E7-M001" : {
    "Drawer1" : {
      "101" : {
        "Partnumber" : "F101"
      },

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extension JSONEncoder {
  func stringEncode<T>(_ value: T) throws -> String where T : Encodable {
    guard let string = String(data: try self.encode(value), encoding: .utf8) else {
      throw EncodingError.invalidValue(value, EncodingError.Context(codingPath: [], debugDescription: "Could not UTF-8 encode string"))
    }
    return string
  }
}

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// With functions/methods you can "launder" your code so it doesn't require self references anymore,
// but you wind up with retain loops that are very non-obvious. I'm having trouble finding good coding
// styles that reliably avoid this kind of problem.

class B {
    // A retain loop waiting to happen
    var completionHandler: () -> Void = {}
}

class C {