zvonicek

final class RunLoopSource {
    private static let eventHandler: @convention(c) (UnsafeMutableRawPointer?) -> Void = { context in
        unsafeBitCast(context, to: RunLoopSource.self).eventHandler()
    }

    private let eventHandler: () -> Void
    private let mode: CFRunLoopMode
    private let runLoop: CFRunLoop
    private var source: CFRunLoopSource!

zvonicek

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Twitter for iPhone

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zvonicek

import numpy as np

# based on http://www.gamedev.net/topic/534655-aabb-triangleplane-intersection--distance-to-plane-is-incorrect-i-have-solved-it/

def intersects_box(triangle, box_center, box_extents):
    X, Y, Z = 0, 1, 2

    # Translate triangle as conceptually moving AABB to origin
    v0 = triangle[0] - box_center
    v1 = triangle[1] - box_center

zvonicek

extension UIViewController {
    public func dch_checkDeallocation(afterDelay delay: TimeInterval = 2.0) {
        let rootParentViewController = dch_rootParentViewController

        // We don’t check `isBeingDismissed` simply on this view controller because it’s common
        // to wrap a view controller in another view controller (e.g. in UINavigationController)
        // and present the wrapping view controller instead.
        if isMovingFromParentViewController || rootParentViewController.isBeingDismissed {
            let type = type(of: self)
            let disappearanceSource: String = isMovingFromParentViewController ? "removed from its parent" : "dismissed"

zvonicek

func throttle<A>(delay:Int, queue:DispatchQueue, action: @escaping ((A)->())) -> (A)->() {
    var lastFireTime = DispatchTime.now()
    let dispatchDelay = DispatchTimeInterval.milliseconds(delay)

    return { state in
        let dispatchTime: DispatchTime = DispatchTime.now() + dispatchDelay
        queue.asyncAfter(deadline: dispatchTime, execute: {
            let when: DispatchTime = lastFireTime + dispatchDelay
            let now = DispatchTime.now()
            if now.rawValue >= when.rawValue {

zvonicek

func debounce<A>(delay:Int, queue:DispatchQueue, action: @escaping ((A)->())) -> (A)->() {
    var lastFireTime = DispatchTime.now()
    let dispatchDelay = DispatchTimeInterval.milliseconds(delay)

    return { state in
        lastFireTime = DispatchTime.now()
        let dispatchTime: DispatchTime = DispatchTime.now() + dispatchDelay
        queue.asyncAfter(deadline: dispatchTime, execute: {
            let when: DispatchTime = lastFireTime + dispatchDelay
            let now = DispatchTime.now()

zvonicek

import UIKit

protocol Coordinator {
    /// Triggers navigation to the corresponding controller
    func start()

    /// Stops corresponding controller and returns back to previous one
    func stop()

    /// Called when segue navigation form corresponding controller to different controller is about to start and should handle this navigation

zvonicek

import Foundation

protocol Service {
    init()
}

class ServiceHolder {
    private var servicesDictionary: [String: Service] = [:]

    init(services: [Service.Type]? = nil) {

zvonicek

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    [[self transitionCoordinator] animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {
        [self.navigationController.navigationBar setTintColor:[UIColor blackColor]];
        [self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor blackColor]}];
        [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"bg_navbar"] forBarMetrics:UIBarMetricsDefault];
    } completion:nil];
}

zvonicek

def is_surprising(seq, d):
    subseq = set()
    collisions = 0

    for i in range(0, len(seq)-d-1):
        word = (seq[i], seq[i+d+1])
        if word in subseq:
            collisions += 1
        else:
            subseq.add(word)