akbashev

### Points and display type

PPI is points per inch below, not pixels per inch. Not all models are listed, just the first model with a new display size. Diamond, RGB Stripe and Pentile RGB refer to the subpixel patterns.

iPhone 1 = 320×480 at 163ppi sRGB IPS LCD RGB Stripe
iPhone 4 = 320×480 at 163ppi sRGB IPS LCD RGB Stripe
iPhone 5 = 320×568 at 163ppi sRGB IPS LCD RGB Stripe
iPhone 6 = 375×667 at 163ppi sRGB IPS LCD RGB Stripe
iPhone 6 Plus = 414×736 at 153.5ppi sRGB IPS LCD RGB Stripe
iPhone 7 = 375×667 at 163ppi P3 IPS LCD RGB Stripe

akbashev

import Foundation
import UIKit // needed for Task in Playgrounds 🤷‍♂️🤔

public protocol Functor {
  associatedtype A
  associatedtype B: Functor = Self
  func map<C>(_ f: @escaping (A) -> C) -> B where B.A == C
}

protocol Monad: Functor {

akbashev

enum Tree<A> {
  indirect case node(A, left: Tree<A>, right: Tree<A>)
  case empty
}

extension Tree {
  static func singleton(_ a: A) -> Tree {
    return .node(a, left: .empty, right: .empty)
  }
}

akbashev

/// Wrapper around a lazily resolved using checked continuation.
///
/// Usage:
///
/// ```
/// let promiseA = Promised<String>()
/// async let a1 = promiseA.value
/// promiseA.resolve(with: "AAA")
/// let a2 = try await promiseA.value
/// print(try await a1, a2)

akbashev

module Main where

combine :: Int -> Int -> Int 
combine a b = a + b

increase = combine 1

decrease = combine (-1)

data Optional a =

akbashev

import Distributed
import DistributedCluster

typealias DefaultDistributedActorSystem = ClusterSystem

/// Naive implementation of Virtual Actors
/// 
/// **Don't overuse it**: this pattern should be used on purpose, e.g. when you have number of dynamic *transparent* actors with some id.
/// If you have limited, already defined set of actors—just create and reference them in a seperate node.
///