lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

Jonalogy

Handling Multiple Github Accounts on MacOS

The only way I've succeeded so far is to employ SSH.

Assuming you are new to this like me, first I'd like to share with you that your Mac has a SSH config file in a .ssh directory. The config file is where you draw relations of your SSH keys to each GitHub (or Bitbucket) account, and all your SSH keys generated are saved into .ssh directory by default. You can navigate to it by running cd ~/.ssh within your terminal, open the config file with any editor, and it should look something like this:

Host *
 AddKeysToAgent yes

> UseKeyChain yes

candostdagdeviren

# PR is a work in progress and shouldn't be merged yet
warn "PR is classed as Work in Progress" if github.pr_title.include? "[WIP]"

# Warn when there is a big PR
warn "Big PR, consider splitting into smaller" if git.lines_of_code > 500

# Ensure a clean commits history
if git.commits.any? { |c| c.message =~ /^Merge branch '#{github.branch_for_base}'/ }
  fail "Please rebase to get rid of the merge commits in this PR"
end

candostdagdeviren

disabled_rules: # rule identifiers to exclude from running
  - variable_name
  - nesting
  - function_parameter_count
opt_in_rules: # some rules are only opt-in
  - control_statement
  - empty_count
  - trailing_newline
  - colon
  - comma

cotkjaer

extension CGRect
{
    /** Creates a rectangle with the given center and dimensions
    - parameter center: The center of the new rectangle
    - parameter size: The dimensions of the new rectangle
     */
    init(center: CGPoint, size: CGSize)
    {
        self.init(x: center.x - size.width / 2, y: center.y - size.height / 2, width: size.width, height: size.height)

laurilehmijoki

import RxSwift // Version 3.2.0
import RxCocoa // Version 3.2.0

func keyboardHeight() -> Observable<CGFloat> {
    return Observable
            .from([
                    NotificationCenter.default.rx.notification(NSNotification.Name.UIKeyboardWillShow)
                            .map { notification -> CGFloat in
                                (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue.height ?? 0
                            },

jamesrochabrun

//reference types
class someClass {
    var name: String
    init(name: String) {
        self.name = name
    }
}

var aClass = someClass(name: "James")
var bClass = aClass

artemnovichkov

import UIKit

extension UITableView {
    
    func dequeueReusableCell<T: UITableViewCell>() -> T {
        return dequeueReusableCell(withIdentifier: NSStringFromClass(T.self)) as! T
    }
}

//using: let cell: ExampleTableViewCell = tableView.dequeueReusableCell()

steipete

# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

# (A similar approach works for older versions too, just change the version number after DeviceSupport)

erica

import UIKit

// Swift rewrite challenge
// Starting point: https://gist.github.com/jkereako/200342b66b5416fd715a#file-scale-and-crop-image-swift

func scaleAndCropImage(
    image: UIImage,
    toSize size: CGSize,
    fitImage: Bool = true
    ) -> UIImage {