Markos Zoulias Charatzas qnoid
qnoid
/ SuperclassCallsOverridableMethod.playground
Last active
August 9, 2017 11:43
Swift ensures that all properties of a derived class are initialised before calling its base class. The compiler will generate a warning. Just move the statement below the assignment to remove the warning. Compared to Java, this is safe. See: http://stackoverflow.com/questions/3404301/whats-wrong-with-overridable-method-calls-in-constructors
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| import Cocoa | |
| class Plane | |
| { | |
| init() | |
| { | |
| readyToTakeOff(); | |
| } | |
| func readyToTakeOff(){ |
qnoid
/ AppDelegate.swift
Last active
June 16, 2017 19:24
This is a sample project to demonstrate how you can use a computed property to create a reusable function ("closure") that mimics a constant value. Think of it as a way to encapsulate both the data and the function it applies to.
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| // | |
| // AppDelegate.swift | |
| // Keychain | |
| // | |
| // Created by Markos Charatzas on 07/09/2014. | |
| // Copyright (c) 2014 qnoid.com. All rights reserved. | |
| // | |
| import Cocoa |
qnoid
/ AppDelegate.swift
Last active
January 15, 2016 14:59
Workaround to http://www.openradar.me/21404408. See related post at http://stackoverflow.com/questions/34813889/replacing-the-uiwindows-rootviewcontroller-while-using-a-transition-appears-to
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| class FooViewController: UIViewController | |
| { | |
| } | |
| func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool { | |
| let fooViewController = FooViewController() | |
| let view = self.window!.snapshotViewAfterScreenUpdates(false) | |
| let viewController = UIViewController() |
qnoid
/ ViewController.swift
Created
January 22, 2016 12:31
In a capture list, there is no need to capture a reference to "self" if you need a reference to an instance self holds. https://twitter.com/qnoid/status/690507191057551360
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| class ViewController : UIViewController | |
| { | |
| var foo = "foo" | |
| func hello() | |
| { | |
| let closure = { [foo = self.foo] in | |
| print("Hello \(foo)!") | |
| } | |
| } |
qnoid
/ Avatar.swift
Last active
April 10, 2016 21:55
Just trying to push the limits of Swift to see what's possible. Trying to get an overall understanding of how code can be structured. Especially around object life cycles. Check the revisions for iterations over the design. Please don't write code like this, unless you know what you are doing.
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| struct Imager | |
| { | |
| unowned let session: Session | |
| unowned let avatar: Avatar | |
| func image(imageView: UIImageView) { | |
| let download = self.session.download(self.avatar.image) { [weak imageView = imageView] (data, response, _) in | |
| guard let _imageView = imageView else { |
qnoid
/ LocalAuthentication.swift
Last active
May 25, 2016 14:18
How using an "Optional Pattern" alongside an "Enumeration Case Pattern" in Swift reduces the code it takes to match an optional AND an enum case at once while capturing its associated values.
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| // MARK: - guard without Optional Pattern | |
| extension LocalAuthentication { | |
| convenience init?(authenticationLevel: AuthenticationLevel?){ | |
| guard let authenticationLevel = authenticationLevel else { | |
| return nil | |
| } | |
| switch authenticationLevel { |
qnoid
/ optional.swift
Created
July 4, 2017 11:14
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| guard let foo = foo else { | |
| assertionFailure("This shouldn't happen") | |
| return | |
| } |
qnoid
/ Process.swift
Last active
July 16, 2017 18:23
Train of thought on how to design the idea of running a series of processes, lazily created, stopping execution early on first error.
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| // 1 | |
| let process = Process() | |
| process.launch() | |
| process.waitUntilExit() | |
| // 2. | |
| let process = Process() | |
| let queue = DispatchQueue() | |
| queue.async { |
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| *{box-sizing:border-box;margin:0;padding:0} | |
| html{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} | |
| address,caption,code,figcaption,pre,th{font-size:1em;font-weight:400;font-style:normal} | |
| fieldset,iframe,img{border:0} | |
| caption,th{text-align:left} | |
| table{border-collapse:collapse;border-spacing:0} | |
| article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block} | |
| audio,canvas,progress,video{display:inline-block;vertical-align:baseline} | |
| button{background:0 0;border:0;box-sizing:content-box;color:inherit;cursor:pointer;font:inherit;line-height:inherit;overflow:visible;vertical-align:inherit} | |
| button:disabled{cursor:default} |
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| var APP_VERSION = '1.0.21'; | |
| ! function e(t, n, r) { | |
| function i(a, l) { | |
| if (!n[a]) { | |
| if (!t[a]) { | |
| var s = "function" == typeof require && require; | |
| if (!l && s) return s(a, !0); | |
| if (o) return o(a, !0); | |
| var c = new Error("Cannot find module '" + a + "'"); | |
| throw c.code = "MODULE_NOT_FOUND", c |