phlippieb

//
//  TableviewDatasource.swift
//
//  Created by Phlippie Bosman on 2019/01/30.
//  Copyright © 2019 Kalido. All rights reserved.
//

import Reusable
import SwiftLCS

phlippieb

// Say you have a generic class with a couple of generic types, 
// that also takes a couple of parameters in its initializer:

class Foo<T, U, V> {
  init(label: String, other: Any) {
    // ...
  }
}

// Instantiating objects of this class in the standard way, while not unusual,

phlippieb

/*
Given an array with optional sub-arrays, how can I flatten the array?

Example:

Given [[1, 2], nil, [3]]
Expect [1, 2, 3]

Solution:

phlippieb

/*
In anticipation of iOS 13, I'm implementing Sign in with Apple.
To get started, I just made a simple VC that brings up the auth stuff, without even handling the result.

When running it in a simulator and completing the sign in process, the process appears to be broken:
- The auth controller is not dismissed
- `ASAuthorizationController`'s delegate method `authorizationController:didCompleteWithAuthorization` is not called

The code below is intended as a simple copy+paste to make problem replication easier:
1. Create a new XCode project

phlippieb

The problem

Consider two models defined like this:

struct User {
  let id: Int
  let name: String
  let email: String
}

phlippieb

/**
 Leveraging Swift's type system to represent the concept of an index type with a fixed size,
 so that iterating over all indices doesn't require a default case.
 */

/// The abstract properties of a fixed-size index type
protocol ExactNumberOfIndices: CaseIterable, RawRepresentable where RawValue == Int {}

/// A concrete fixed-size index type with 1 element (namely 0)
enum _1: Int, ExactNumberOfIndices {