DougGregor

extension Collection {
  func parallelMap<T>(
    parallelism requestedParallelism: Int? = nil,
    _ transform: @escaping (Element) async throws -> T
  ) async throws -> [T] {
    let defaultParallelism = 2
    let parallelism = requestedParallelism ?? defaultParallelism

    let n = self.count
    if n == 0 {

IanKeen

struct User: Equatable {
    var firstName: String
    var lastName: String
}

@main
struct MyApp: App {
    @State var value = User(firstName: "", lastName: "")
    @State var showEdit = false

jjgod

#import <Foundation/Foundation.h>
#import <CoreText/CoreText.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        CTFontRef font = CTFontCreateUIFontForLanguage(kCTFontUIFontSystem, 12, NULL);
        {
            CTFontRef fallback = CTFontCreateForStringWithLanguage(font, CFSTR("\u4E2D"), CFRangeMake(0, 1), CFSTR("zh-Hans"));
            CFCharacterSetRef covered = CTFontCopyCharacterSet(fallback);
            bool isMember = CFCharacterSetIsCharacterMember(covered, 0x61);

airspeedswift

////===--- EitherSequence.swift - A sequence type-erasing two sequences -----===//
////
//// This source file is part of the Swift.org open source project
////
//// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
//// Licensed under Apache License v2.0 with Runtime Library Exception
////
//// See https://swift.org/LICENSE.txt for license information
//// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
////

greenchiu

import Foundation

enum PromiseError: Error {
    case invaild
}
public struct AsyncExecutor {
    public static let main = AsyncExecutor()
    public static let background = AsyncExecutor(qos: .default)
    
    private let queue: DispatchQueue

greenchiu

func Solution(_ nums1:[Int], _ nums2: [Int]) -> Int? {
    let set: Set<Int> = Set(nums1)
    var result: Int?
    for element in nums2 {
        if set.contains(element) {
            if let currentMin = result {
                result = min(element, currentMin)
                continue
            }
            result = element

stephanecopin

import Foundation
import MessageUI

struct EmailParameters {
	/// Guaranteed to be non-empty
	let toEmails: [String]
	let ccEmails: [String]
	let bccEmails: [String]
	let subject: String?
	let body: String?

pofat

import Foundation

// struct for printing out instance address
struct MemoryAddress<T>: CustomStringConvertible {

    let intValue: Int
    var description: String {
        let length = 2 + 2 * MemoryLayout<UnsafeRawPointer>.size
        return String(format: "%0\(length)p", intValue)
    }

simme

//
//  debounce-throttle.swift
//
//  Created by Simon Ljungberg on 19/12/16.
//  License: MIT
//

import Foundation

extension TimeInterval {

billy3321

這篇文章旨在作為快速參考與展示。要更多完整的資訊，請見 John Gruber 原本的規格與 Github 偏好的 Markdown（Github-flavored Markdown，簡寫為GFM）資訊頁。

如果你正在找 Markdown Here 的小抄（Cheatsheet），這裡也有一篇。你也可以看看更多 Markdown 的工具。

譯註：可以參考這份中文版文件，有更詳盡的 Markdown 語法說明；如果需要可以練習的線上編輯器，可以試試看HackMD。

目錄

Headers