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 {

mecid

import SwiftUI

extension Calendar {
    func generateDates(
        inside interval: DateInterval,
        matching components: DateComponents
    ) -> [Date] {
        var dates: [Date] = []
        dates.append(interval.start)

mattt

import UIKit

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

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

stinger

import Foundation
import Combine

enum APIError: Error, LocalizedError {
    case unknown, apiError(reason: String)

    var errorDescription: String? {
        switch self {
        case .unknown:
            return "Unknown error"

issuran

1- First of all, you have to run your app on the simulator.
2- Then, open the terminal
3- Now, you have to run the command you desire:
  - Screenshot:   xcrun simctl io booted screenshot
  - Video:        xcrun simctl io booted recordVideo <filename>.<file extension>.

For example:       xcrun simctl io booted recordVideo appvideo.mov

4- Press cntrl + c to stop recording the video.

Tulakshana

//
//  MovieTransitionsVC.swift
//  VideoAnimations
//
//  Created by Tula on 2018-06-14.
//  Copyright © 2018 Tula. All rights reserved.
//

import UIKit
import AVFoundation

atereshkov

On Mac OSX, the native SSH client can use the built-in keychain directly. 

Open terminal.
Write:
mkdir ~/.ssh
cd ~/.ssh

Copy your private key "id_rsa" to /.ssh folder.

Write in terminal also:

asukakenji

Go (Golang) Standard Library Interfaces (Selected)

This is not an exhaustive list of all interfaces in Go's standard library. I only list those I think are important. Interfaces defined in frequently used packages (like io, fmt) are included. Interfaces that have significant importance are also included.

All of the following information is based on go version go1.8.3 darwin/amd64.

christianascone

import Foundation

// http://sapandiwakar.in/make-hexagonal-view-on-ios/
extension UIView {
    
    /// Set the view layer as an hexagon
    func setupHexagonView() {
        let lineWidth: CGFloat = 5
        let path = self.roundedPolygonPath(rect: self.bounds, lineWidth: lineWidth, sides: 6, cornerRadius: 10, rotationOffset: CGFloat(.pi / 2.0))
        

pdyakov

// How to connect to Etherium Blockchain Platform
// Emitting events and listening for events within blockchain network

var Web3 = require('web3');

const HOST = '';
const ACCOUNT = '';
const ContractData = {...};

// Connection