mattt

func unzip<S: Sequence, T, U>(_ sequence: S) -> (AnySequence<T>, AnySequence<U>)
    where S.Element == (T, U)
{
    return (
        AnySequence(sequence.lazy.map{ $0.0 }),
        AnySequence(sequence.lazy.map{ $0.1 })
    )
}

let fibonacci = sequence(first: (0, 1), next: { ($1, $0 + $1) })

mattt

import Foundation

extension UnitConcentrationMass {
    class var microgramsPerCubicMeter: UnitConcentrationMass {
        let converter = UnitConverterLinear(coefficient: 1e-9)
        return .init(symbol: "µg/m³", converter: converter)
    }
}

mattt

import Foundation

extension Collection where Element: Comparable {    
    func sorted(ascending: Bool = true, using comparator: (Element) -> (Element) -> ComparisonResult) -> [Element] {
        return self.sorted { lhs, rhs in
            comparator(lhs)(rhs) == (ascending ? .orderedAscending : .orderedDescending)
        }
    }
}

mattt

Pitch: Unicode Named Character Escape Sequence

Introduction

This proposal adds a new \N{name} escape sequence to Swift string literals, where name is the name of a Unicode character.

Discussion

The Unicode named character escape sequence was previously discussed here:

mattt

#!/usr/bin/swift sh

import DeckOfPlayingCards // @NSHipster ~> 4.0.0
import PlayingCard
import Cycle // @NSHipster == bb11e28

class Player {
    var name: String
    var hand: [PlayingCard] = []

mattt

import Foundation

extension Character {
    var isEmoji: Bool {
        return unicodeScalars.allSatisfy { $0.properties.isEmoji }
    }
}

func recentlyUsedEmoji() -> [Character]? {
  #if os(iOS)

mattt

import UIKit

#if canImport(SwiftUI) && DEBUG
import SwiftUI
struct UIViewControllerPreview<ViewController: UIViewController>: UIViewControllerRepresentable {
    let viewController: ViewController

    init(_ builder: @escaping () -> ViewController) {
        viewController = builder()
    }

mattt

"https://developer.apple.com/documentation/accelerate/vimagecvimageformat/chromasiting/3241430"
"https://developer.apple.com/documentation/accelerate/vdsp/dcttransformtype/3240713"
"https://developer.apple.com/documentation/accelerate/vdsp/dfttransformtype/3240728"
"https://developer.apple.com/documentation/accelerate/vimage/error/3241360"
"https://developer.apple.com/documentation/accelerate/quadrature/error/3240672"
"https://developer.apple.com/documentation/accelerate/vimagecvimageformat/format/3241442"
"https://developer.apple.com/documentation/accelerate/vdsp/fouriertransformdirection/3240744"
"https://developer.apple.com/documentation/accelerate/vdsp/integrationrule/3240753"
"https://developer.apple.com/documentation/accelerate/vimage/options/3241388"
"https://developer.apple.com/documentation/accelerate/vdsp/radix/3240761"

mattt

{
   "/Users/mattt/Desktop/Alamofire.swift" : {
      "deinitializers" : [],
      "functions" : [
         {
            "declaration" : {
               "name" : "request",
               "genericRequirements" : [],
               "signature" : {
                  "output" : "DataRequest",

mattt

{
   "files" : [
      {
         "enumerations" : [
            {
               "documentation" : [],
               "declaration" : {
                  "attributes" : [],
                  "modifiers" : [
                     {