jjrscott

//
//  RegularExpression.swift
//  RegularExpressions
//
//  Created by John Scott on 15/07/2020.
//
// Original matching implementation Brian Kernighan : https://www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html
// Swift port Ben Cohen : https://github.com/apple/swift/blob/a9eee38e109e3d99f103a9bee71bed4422fbb6fd/benchmark/single-source/StringMatch.swift

import Foundation

rxwei

Upstreaming Swift AutoDiff

Author: Richard Wei (rxwei@google.com) on behalf of the Swift for TensorFlow team

Last updated: October 2, 2019

Overview

The differentiable programming feature (AutoDiff) has been incubated in the 'tensorflow' branch of apple/swift since December 2017 and released as part of the Swift for TensorFlow toolchains. The Differentiable Programming Mega-Proposal, which serves as a manifesto, received general positive feedback from the community, but there is a long way between receiving conceptual approval and obtaining Swift Evolution approval of such a large feature. We would like to merge the pieces into the 'master' branch under a gate to further development and bake the feature on master, just like Apple develops its major features

reckenrode

enum JSON: Decodable {
    case bool(Bool)
    case double(Double)
    case string(String)
    indirect case array([JSON])
    indirect case dictionary([String: JSON])

    init(from decoder: Decoder) throws {
        if let container = try? decoder.container(keyedBy: JSONCodingKeys.self) {
            self = JSON(from: container)

Gankra

Swift Ownership Manifesto TL;DR

Most of the manifesto is background and detailed definitions -- if you're confused or want details, read the manifesto!

https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20170213/032155.html

Note also that manifestos aren't complete proposals -- syntax and details may change!

One piece of background: inout is kinda complicated because it can be used on computed properties -- foo(&val.x) might be sugar for

anandabits

Value Subtypes and Generalized Enums, a manifesto

The goal of this document is to provide a comprehensive view of what value subtyping might look like in Swift and demonstrate how generalized enums play a significant role in this future.

Note: All syntax used in this document that is not currently valid Swift syntax is only intended to serve the purpose of demonstrating ideas and to serve as a point of reference for future proposals. The intent is not to propose that this exact syntax be used.

Acknowledgement: some of the ideas in this document have been inspired by Niko Matsakis' blog post exploring similar ideas in the context of Rust: http://smallcultfollowing.com/babysteps/blog/2015/08/20/virtual-structs-part-3-bringing-enums-and-structs-together/

Definition

tomduckering

import Foundation

private class BasicValueTransformer: ValueTransformer {
    let transform: (AnyObject?) -> (AnyObject?)

    init(transform: @escaping (AnyObject?) -> (AnyObject?)) {
        self.transform = transform
    }

    // MARK: NSValueTransformer

santisbon

Updating a feature branch

First we'll update your local master branch. Go to your local project and check out the branch you want to merge into (your local master branch)

$ git checkout master

Fetch the remote, bringing the branches and their commits from the remote repository. You can use the -p, --prune option to delete any remote-tracking references that no longer exist in the remote. Commits to master will be stored in a local branch, remotes/origin/master.

erica

// @discardableResult to be added
// @noescape needs to move to type annotation
// needs to add _ for item
public func with<T>(item: T, @noescape update: (inout T) throws -> Void) rethrows -> T {
    var this = item; try update(&this); return this
}

mattshepherd

//disable TOC button
window.HelpViewer.showTOCButton(false);

//enable TOC button
//If you call this on window load it will flash active for a brief second and then disable again.
//Call if after a delay of 250ms and is works fine
//Not sure what the second variable does yet, but passing false works fine
window.HelpViewer.showTOCButton( true, false, function() {
	 //do something to toggle TOC in your webpage
});

erica

import UIKit
import XCPlayground

class ViewController: UIViewController {
    func action() { print("Bing!") }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .whiteColor()