rnapier

import Foundation

public protocol JSONStringConvertible: class {
    var jsonString: String { get }
}

extension Logger {
    // Converts an arbitrary object into some that is JSON-safe
    static func makeJSONObject(_ object: Any) -> Any {
        if let jsonObj = object as? JSONStringConvertible {

rnapier

import Foundation

/// Simple example of decoding different values based on a "type" field

let json = Data("""
    [{
            "type": "user",
            "name": "Alice"
        },
        {

rnapier

import Foundation

// Provides a nice bare-init for ID types
protocol IDType: Codable, Hashable {
    associatedtype Value
    var value: Value { get }
    init(value: Value)
}

extension IDType {

rnapier

import Foundation

protocol DataStorage {
    subscript(identifier: String) -> Data? { get set }
}

extension UserDefaults: DataStorage {
    subscript(identifier: String) -> Data? {
        get { return data(forKey: identifier) }
        set { set(newValue, forKey: identifier) }

rnapier

// Fully type-erased solution for
// https://stackoverflow.com/questions/55549318/avoiding-type-erasure-when-implementing-the-repository-pattern/55550454
// I don't like type-erasers like this; I believe it can be sliced a better way.
// Compare https://gist.github.com/rnapier/f7f0fa6202b0d6586af188635f54b28b, which I like, but relies on a common
// currency of serializing everything to Data and working with that instead of having storage that can deals with Element
// directly.

// FURTHER THOUGHTS:
// 
// This example is interesting because, like so many of these toy projects, its design is completely broken and wouldn't

rnapier

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

#import <Foundation/Foundation.h>

@interface MyClass: NSObject

rnapier

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

rnapier

// 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

rnapier

import Foundation

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

rnapier

import Foundation

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

    @objc dynamic var aProperty = false

    func updateDoesntWork() {
        aProperty = !aProperty
    }