lipka

import Foundation

/**
 Limits the rate at which a closure is executed by preventing it's execution until a specified amount of time has elapsed.

 Example:
 ```
 let fetchThrottle = Throttle(interval: 60)

 fetchThrottle {

lipka

import Foundation

// Based on https://www.swiftbysundell.com/articles/caching-in-swift/

final class Cache<Key: Hashable, Value> {
    private let wrapped = NSCache<WrappedKey, Entry>()

    func insert(_ value: Value, forKey key: Key) {
        let entry = Entry(value: value)
        wrapped.setObject(entry, forKey: WrappedKey(key))

lipka

// Swift's `Task` silently discards errors from throwable callsites. `SafeTask` forces you to explicitly handle errors at the callsite and helps you avoid mistakes with silently discarded errors.

@discardableResult func SafeTask<Success>(priority: TaskPriority? = nil, operation: @escaping () async -> Success) -> Task<Success, Never> where Success: Sendable {
    return Task(priority: priority, operation: {
        await operation()
    })
}

lipka

1. Install Xcode (available in the Mac App Store)
2. Install [Brew](https://brew.sh)
3. Install [Cocoapods](https://cocoapods.org)
4. Install [Fastlane](https://docs.fastlane.tools)
5. In Xcode, make sure that under Preferences/Locations the Command Line Tools field is not empty
6. Add provisoning profiles and certificates
7. Install [Buildkite agent](https://buildkite.com/docs/agent/v3/osx)
    * `brew tap buildkite/buildkite`
    * `brew install --token='INSERT-YOUR-AGENT-TOKEN-HERE' buildkite-agent`
    * Run `brew info buildkite-agent` and execute the command displayed at the end to autostart the agent

lipka

CGFloat ScaleToAspectFitRectInRect(CGRect rfit, CGRect rtarget)
{
    // first try to match width
    CGFloat s = CGRectGetWidth(rtarget) / CGRectGetWidth(rfit);
    // if we scale the height to make the widths equal, does it still fit?
    if (CGRectGetHeight(rfit) * s <= CGRectGetHeight(rtarget)) {
        return s;
    }
    // no, match height instead
    return CGRectGetHeight(rtarget) / CGRectGetHeight(rfit);

lipka

import UIKit

// This class allows the "presentedController" to receive touches
// https://pspdfkit.com/blog/2015/presentation-controllers/
class PSPDFTouchForwardingView: UIView {
    
    var passthroughViews: [UIView] = []
    
    override func hitTest(point: CGPoint, withEvent event: UIEvent?) -> UIView? {
        guard let hitView = super.hitTest(point, withEvent: event) else { return nil }

lipka

//  Created by Caleb Davenport on 7/14/17.

import UIKit

final class ActionSheetPresentationController: UIPresentationController {

    // MARK: - Properties

    private var dimmingView: UIView!

lipka

// The trick is to link the DeviceSupport folder from the beta to the stable version.

// Updated on Jan 24th, 2017 for Xcode 8.3b1

ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/10.3\ \(14E5230d\)/ /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

// Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

// sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

lipka

/**
 *  A class that can be part of a tabbed navigational interface (expected to be a `UIViewController` but can also be a 
 *  coordinator that proxies through to an underlying controller).
 */
public protocol TabComponent {
    /// The tab metadata
    var tabItem: TabItem { get }

    var viewController: UIViewController { get }
}

lipka

// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

#import <objc/runtime.h>
#import <objc/message.h>

// Compile-time selector checks.