Debugging Swift code with LLDB

ll Debug

https://medium.com/flawless-app-stories/debugging-swift-code-with-lldb-b30c5cf2fd49

Stored properties in swift extensions

protocol PropertyStoring {
 
    associatedtype T
 
    func getAssociatedObject(_ key: UnsafeRawPointer!, defaultValue: T) -> T
}
 
extension PropertyStoring {
    func getAssociatedObject(_ key: UnsafeRawPointer!, defaultValue: T) -> T {
        guard let value = objc_getAssociatedObject(self, key) as? T else {
            return defaultValue
        }
        return value
    }
}
 
protocol ToggleProtocol {
    func toggle()
}
 
enum ToggleState {
    case on
    case off
}
 
extension UIButton: ToggleProtocol, PropertyStoring {
 
    typealias T = ToggleState
 
    private struct CustomProperties {
        static var toggleState = ToggleState.off
    }
 
    var toggleState: ToggleState {
        get {
            return getAssociatedObject(&CustomProperties.toggleState, defaultValue: CustomProperties.toggleState)
        }
        set {
            return objc_setAssociatedObject(self, &CustomProperties.toggleState, newValue, .OBJC_ASSOCIATION_RETAIN)
        }
    }
 
    func toggle() {
        toggleState = toggleState == .on ? .off : .on
 
        if toggleState == .on {
            // Shows background for status on
        } else {
            // Shows background for status off
        }
    }
}
 
let a = UIButton()
print(a.toggleState)
a.toggleState = .on
print(a.toggleState)

Источник: https://marcosantadev.com/stored-properties-swift-extensions/

1. — переходим в дев
2. — создаём релизную ветку
3. — меняем версию
4. — коммитим и пушим ветку
5. — собираем билд и кладём его в Fabric

переходим в дев

создаём релизную ветку

git flow release start 0.4

меняем версию 
коммитим и пушим ветку
собираем билд и кладём его в Fabric

fetch("/api/v1/periodic/")
                 .then((response) => response.json())
                 .then((responseJson) => {
                     this.list = responseJson.elements;
                     this.state = {
                        displayedElements: responseJson.elements,
                        elements: responseJson.elements
                     };
                     this.setState(this.state);
                     return responseJson.elements;
                })
                .catch((error) => {
                  console.error(error);
                });

import RxAlamofire
import SwiftyJSON

    func load() {
        let host = "http://chemnote.ru/api/v1/periodic/"
        guard let url = host.url else { return }
        RxAlamofire.requestJSON(.get, url)
            .bind { (r, json) in
                let dic = JSON(json)
                for (_,element) in dic {
                    let symbol: String = element["symbol"].stringValue
                    PeriodicTable.elements.append(Element(with: symbol))
                    print("el: \(symbol) ")
                }
            }
            .disposed(by: bag)
        
        
    }

import CryptoSwift

extension String {
    
    func md5() -> String {
        let bytes:Array<UInt8> = Array(self.utf8)
        let md5hash = bytes.md5().toHexString()
        return md5hash
    }
    
}

Debug UIViewAlertForUnsatisfiableConstraints

мануальчик по поиску конфликтующих констрейнтов

extension Element: CustomStringConvertible {
    var description : String {
        return "element: \(symbol)"
    }
}

шаг первый
в ViewController пишем

шаг второй в stoyboard у главной view указываем тип SKView

Size Of Screen

var screenSize: CGSize {
        return UIScreen.main.bounds.size
    }

Код Стайл

Код Стайл

var sketch = context.api()
 var doc = sketch.selectedDocument
	var page = doc.selectedPage
var group = page.newGroup({frame: new sketch.Rectangle(0, 0, 200, 200), name: "test"})
var rect = group.newShape({frame: new sketch.Rectangle(50, 50, 100, 100), name: "cell1" })

var onRun = function(context) {
var sketch = context.api()
var doc = sketch.selectedDocument
var page = doc.selectedPage
var count = 5
var size = 320/count
var group = page.newGroup({frame: new sketch.Rectangle(0, 0, 320, size), name: "test"})
var colors = ["#ff000090","#00FF00FF"]
for(i = 0; i < count; i++){
var rect = group.newShape({frame: new sketch.Rectangle(i*size, 0, size, size), name: "cell1",fills: ["#00FF0090"], borders: ["#303030FF"] })
}
};

let version = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as! String
        let build = Bundle.main.infoDictionary?["CFBundleVersion"] as! String

пишем расширение

extension UIApplication {
    func getVersion() -> String {
        let version = Bundle.main.infoDictionary?["CFBundleShortVersionString"] as! String
        let build = Bundle.main.infoDictionary?["CFBundleVersion"] as! String
        return "\(version).\(build)"
    }
}

применение

...
UIApplication.shared.getVersion()
...

Дату из текущей + N дней

extension Date {
    func dateFromDays(_ days: Int) -> Date {
        return (Calendar.current as NSCalendar).date(byAdding: .day, value: days, to: self, options: [])!
    }
}

let startDate = Date()
let endDate = startDate.dateFromDays(+10)

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
       
        let share = UITableViewRowAction(style: .normal, title: "Share") { action, index in
            print("share button tapped")
        }
        share.backgroundColor = UIColor.blue
        
        let deleteAction = UITableViewRowAction(style: .default, title: "Del") {action, index in
            self.deleteRow(index)
        }
        
        deleteAction.backgroundColor = .red
        return [deleteAction, share]
    }

let uiRealm = RealmHelper.shared
                if let currentTaskList = self.taskList {
                    try! uiRealm.write { ()->Void in
                          currentTaskList.tasks.append(newTask)
                    }
                }

https://github.com/hansemannn/iOS11-NFC-Example

https://medium.com/cocoaacademymag/how-to-write-auto-layout-constraints-with-snapkit-in-ios-c5f95c7c695d

func setupConstraints(){
        uiLogo.snp.makeConstraints{ set in
            set.width.equalTo(AppStyles.About.logoSize)
            set.height.equalTo(AppStyles.About.logoSize)
            set.top.equalToSuperview().offset(AppStyles.About.offsetTop)
            set.centerX.equalToSuperview()
        }
        
        uiVersion.snp.makeConstraints{set in
            set.top.equalTo(uiLogo.snp.bottom).offset(AppStyles.About.offetBottom)
            set.centerX.equalToSuperview()
        }
        
        uiBack.snp.makeConstraints{make in
            make.width.equalTo(AppStyles.About.backSize)
            make.height.equalTo(AppStyles.About.backSize)
            make.centerX.equalToSuperview()
            make.bottom.equalToSuperview().offset(-AppStyles.About.offetBottom)
        }
    }

Multi, Мульти аргументы

typealias Person = (id: Int, name: String)

class Persons{
    var items:[Person] = []
    func add(_ persons: Person...){
        persons.forEach{id,name in
            print("id: \(id) name: \(name)")
        }
    }
}

Persons().add(
   (1,"Yuriy"),
   (2,"Vadim"),
   (3,"Anastasya")
)