stleamist

import KingFisher

struct KFLinkPresentationIconProvider: ImageDataProvider {
    
    let url: URL
    let cacheKey: String
    
    init(url: URL, cacheKey: String? = nil) {
        self.url = url
        self.cacheKey = cacheKey ?? url.absoluteString

mattt

import UIKit

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

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

mattt

import Foundation

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

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

asisadh

extension ViewController: AVAssetResourceLoaderDelegate{
    
    func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForRenewalOfRequestedResource renewalRequest: AVAssetResourceRenewalRequest) -> Bool {
        return self.resourceLoader(resourceLoader, shouldWaitForLoadingOfRequestedResource: renewalRequest)
    }
    
    func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -> Bool {
        guard let url = loadingRequest.request.url else {
            print("🔑", #function, "Unable to read the url/host data.")
            loadingRequest.finishLoading(with: NSError(domain: "com.icapps.error", code: -1, userInfo: nil))

linearhw

성능 비교하기

• 테스트앱
• 낮은 해상도 = 사진 크기: 10 ~ 50KB
• 중간 해상도 = 사진 크기: 100 ~ 500KB + 5MB
• 높은 해상도 = 사진 크기: 10 ~ 50MB
• 기본 설정 = 설정: 메모리 100MB 디스크 150MB
• 리사이즈 = (화면 너비 / 3)^2. iPhone 8+ 기준으로 414 pixel.

리사이즈 없이 테스트

kishikawakatsumi

import RxSwift
import RxCocoa

fileprivate extension Reactive where Base: UIScrollView {
    fileprivate var currentPage: Observable<Int> {
        return didEndDecelerating.map({
            let pageWidth = self.base.frame.width
            let page = floor((self.base.contentOffset.x - pageWidth / 2) / pageWidth) + 1
            return Int(page)
        })

modocache

===-------------------------------------------------------------------------===
                               Swift compilation
===-------------------------------------------------------------------------===
  Total Execution Time: 0.0307 seconds (0.1196 wall clock)

   ---User Time---   --System Time--   --User+System--   ---Wall Time---  --- Name ---
   0.0043 ( 39.3%)   0.0091 ( 45.6%)   0.0133 ( 43.4%)   0.0547 ( 45.7%)  performSema
   0.0030 ( 27.5%)   0.0070 ( 35.2%)   0.0100 ( 32.5%)   0.0437 ( 36.5%)  performSema-loadStdlib
   0.0011 ( 10.0%)   0.0011 (  5.4%)   0.0022 (  7.0%)   0.0081 (  6.7%)  performSema-parseAndCheckTypes
   0.0008 (  7.0%)   0.0009 (  4.4%)   0.0016 (  5.3%)   0.0067 (  5.6%)  Type checking / Semantic analysis

tommyettinger

/*  Written in 2017 by Tommy Ettinger (tommy.ettinger@gmail.com)

To the extent possible under law, the author has dedicated all copyright
and related and neighboring rights to this software to the public domain
worldwide. This software is distributed without any warranty.

See <http://creativecommons.org/publicdomain/zero/1.0/>. */

#include <stdint.h>

fousa

class FairPlayer: AVPlayer {
  
  private let queue = DispatchQueue(label: "com.icapps.fairplay.queue")
 
  func play(asset: AVURLAsset) {
    // Set the resource loader delegate to this class. The `resourceLoader`'s delegate will be 
    // triggered when FairPlay handling is required.
    asset.resourceLoader.setDelegate(self, queue: queue)
    
    // Load the asset in the player.

LeoHeo

var, let, const 차이점은?

• var는 function-scoped이고, let, const는 block-scoped입니다.

• function-scoped와 block-scoped가 무슨말이냐?

var(function-scoped)

jsfiddle 참고주소