ole/CustomScrollView

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ole/CustomScrollView

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A very simple implementation of a scroll view on iOS. Not meant for production, just for learning purposes. Please check out the accompanying blog post.

CustomScrollView

A very simple implementation of a scroll view on iOS. Not meant for production (use UIScrollView instead), just for learning purposes. Please check out my accompanying blog post for more information.

Written by Ole Begemann, April 2014.

Additional Features

Extended with additional features (see follow-up blog post):

Inertial scrolling by Rounak
Bouncing and rubber-banding by Grant Paul

whats-new-in-swift-4

An Xcode playground showcasing the new features in Swift 4.0.

OBShapedButton

A UIButton subclass that works with for non-rectangular button shapes.

whats-new-in-swift-4-2

An Xcode playground demonstrating the new features in in Swift 4.2.

OLEContainerScrollView

A UIScrollView subclass that intelligently handles multiple child scroll views and does not interfere with UIKitʼs cell reuse functionality.

Animated-Paths

Demo project: Animating the drawing of a CGPath with CAShapeLayer.strokeEnd

swiftui-view-lifecycle

Observe how different SwiftUI container views affect state and lifecycle events (onAppear, onDisappear).

OBSlider

A UISlider subclass that adds variable scrubbing speeds (as seen in the Music app on iOS).

CollectionViewParallaxScrolling

A custom UICollectionViewFlowLayout to support parallax scrolling in cells. Check out the accompanying blog post for more info.

Ampere

Adding multiplication and division to the units of measurement types in Foundation.

swiftui-layout-inspector

A tool for learning how the SwiftUI layout system works, and for debugging your own layout code.

SortedArray

An array that keeps its elements sorted according to a given sort predicate.

OBGradientView

A simple UIView wrapper for CAGradientLayer. For the times when it's more convenient to use a view instead of a CALayer.

NSBundle-OBCodeSigningInfo

Check an app bundle's code signing and sandboxing state to NSBundle.

swift-rp-pico-bare

Embedded Swift on the Raspberry Pi Pico without the Pico C/C++ SDK

Storyboard-Strings-Extraction

Automatically extract translatable strings from Xcode storyboards and update .strings files.

SilentPush

An iOS test app for testing silent push notifications and background fetching.

CGPathHitTesting

A demo iOS app to illustrate hit testing with CGPathCreateCopyByStrokingPath()

pico-embedded-swift

Embedded Swift on the Raspberry Pi Pico

AppointmentList

Sample iOS app that lists events from the device's calendar store in a table view and groups them by date.

RemoteViewControllers

Introspection of the private and undocumented remote view controllers feature in iOS 6

iphone-6-plus-rendering

Quick and dirty test apps to understand how the built-in downsampling to screen resolution works on the iPhone 6 Plus.

GestureRecognition

Sample iOS app for a blog post about gesture recognition and attention to detail

itunesconnect-financialreports

Converts Financial Reports from iTunes Connect (App Store) to HTML

OSLogStoreTest

Test app for evaluating if apps can access their own OSLog logs via OSLogStore.

AnalogDial

A circular analog dial that can display a numeric value in a specified range (like an analog speedometer).

AppleCoreDataModels

NotificationUnregistering

Testing the behavior of the block based NotificationCenter API. Do you have to call NotificationCenter.removeObserver(_:) or is it enough to let the observer token go out of scope? Turns out: the former (tested on iOS 11.2).

ConcurrencyBenchmark

HexHexHex

A parser for the Intel Hexadecimal Object File Format (.hex), written in Swift.

Kaffeekasse

Sample apps for a Passbook tutorial on my blog.

transcribe

A Swift parser for output files from automated transcription services. An experiment inspired by the Swift Community Podcast.

Picobello

An assembler for the Microchip PIC instruction set, written in Swift.

topaz

An attempt to reimplement a minimal version of the Swift standard library. Just for fun — I doubt this has practical applications.

RGBtoCMYK

A simple command-line Cocoa app to convert images to CMYK

SwiftUI-Mac-Focus

Test project for playing with focus, keyboard shortcuts, menu commands in SwiftUI on the Mac

CAShapeLayer-Animation

Demo project for a Stack Overflow question: "Animate CAShapeLayer path on animated bounds change"

Funtime

A Swift interface for the Objective-C Runtime API

CollectionViewContentSizeAnimation

Demo project for a Stack Overflow question.

SwiftPM-embedded-minimal

OBStack

OBStack is a very simple implementation of a stack data structure (last in, first out) in Cocoa.

AsyncSequenceOperators

Experimental reimplementations of functional reactive operators for AsyncSequence. DO NOT USE IN PRODUCTION!

AsyncXMLParsing

An AsyncSequence wrapper for Foundation’s XMLParser (experimental)

SwiftUIAnimationBug

https://twitter.com/olebegemann/status/1587912494290444290

twitter-backup

A Ruby script to backup tweets (in the raw JSON format)

rust-rp-pico-template

A cargo-generate template for embedded Rust development on the Raspberry Pi Pico.

docopt.objc

Incomplete beginnings of an implementation of the docopt language in Objective-C.

CoreDataDebugging

SetSolver

A solver for the card game Set.

SwiftConcurrencyDeadlock