LeeKahSeng

import Foundation

let jsonString = """
{
  "S001": {
    "firstName": "Tony",
    "lastName": "Stark"
  },
  "S002": {
    "firstName": "Peter",

airspeedswift

struct BoundedSequence<Base: Sequence> {
  let _base: Base
}

extension BoundedSequence {
  struct Iterator {
    enum State { case starting, iterating, ended }
    var _state: State
    var _iterator: Base.Iterator
  }

mattt

public struct BoundedSequence<Base>: Sequence, IteratorProtocol where Base: Sequence {
    public struct Boundary: Equatable {
        public let isStart: Bool
        public let isEnd: Bool
    }
    
    private var _iterator: Base.Iterator
    private var _previous: Base.Element?
    private var _current: Base.Element?
    private var _next: Base.Element?

lexrus

import Cocoa
import CreateML

let 双色球神算子 = try MLTextClassifier(trainingData: [
    "中奖啦": [
        "09 11 14 20 27 30 09",
        "02 09 14 15 16 23 10",
        "11 16 19 22 25 30 08",
        "02 05 06 13 16 19 03",
        "04 09 15 16 19 27 10",

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

shaps80

//
//  AppDelegate.swift
//  Scheduling
//
//  Created by Shaps Benkau on 19/02/2018.
//  Copyright © 2018 152percent Ltd. All rights reserved.
//

import UIKit

shaps80

final class Example {
    
    func emptyTask() {
        TODO
    }
    
    func slowTask() {
        FIXME
        print("This still executes")
    }

ethanhuang13

sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/13.2/ /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/WatchOS.platform/DeviceSupport/6.1/ /Applications/Xcode.app/Contents/Developer/Platforms/WatchOS.platform/DeviceSupport

sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/AppleTVOS.platform/DeviceSupport/13.2/ /Applications/Xcode.app/Contents/Developer/Platforms/AppleTVOS.platform/DeviceSupport

shaps80

//
//  ReusableView.swift
//  Pods
//
//  Created by Shahpour Benkau on 27/02/2017.
//
//

import UIKit

KittenYang

void Swizzle(Class c, SEL orig, SEL new) {  
  Method origMethod = class_getInstanceMethod(c, orig);
  Method newMethod = class_getInstanceMethod(c, new);
  if (class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))){
    class_replaceMethod(c, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
  } else {
    method_exchangeImplementations(origMethod, newMethod);
  }
}