biku’s gists

biku / scaryFridays

Created April 14, 2017 21:00

	func fridaysThe13(forYear:Int) -> [Date]? {
	var days = [Date]()

	let calendar = Calendar.current

	let dateComponentsStart = DateComponents(year: 2017)
	let dateStart = calendar.date(from: dateComponentsStart)!
	let dateEnd = calendar.date(byAdding: .year, value: 1, to: dateStart)

	var comps = DateComponents(day: 13, weekday: 6)

biku / force didSet on array when changing a property of a member

Created August 17, 2016 17:31

	class Ns:NSObject {
	var title: String = "unset"
	}

	struct Me {
	var me:[Ns] {
	didSet {
	print("set me")
	}
	}

biku / lldb swift object casting

Created June 7, 2016 14:55

	(lldb) e let $pin = unsafeBitCast(0x7df67c50, MKPinAnnotationView.self)
	(lldb) po $pin

biku / gist:bb7905fec0c4886f4d3f59112e15ad3e

Last active May 10, 2016 13:48

sizing UIImage view with sizeToFitIn - you can just paste it into a playground, but it needs to have horizontal.jpg & vertical.jpg images

	import Foundation
	import XCPlayground
	import UIKit

	extension CGSize {
	static func aspectFit(aspectRatio : CGSize, newSizeSize: CGSize) -> CGSize {
	let mW = newSizeSize.width / aspectRatio.width;
	let mH = newSizeSize.height / aspectRatio.height;

	var boundingSize = newSizeSize

biku / RewindableGenerator

Last active August 29, 2015 14:27

Generator that you initialize with a CollectionType(restricted) and can get previous or next. Returns nil past bounds and that case changes to previous position.

	/// create a rewindable generator from a collection
	/// than previous and next can return you proper Value/Object or nil if it goes past bounds
	/// if you find a way to improve it, I'm all ears :-D
	struct RewindableGenerator<S : CollectionType where S.Index : BidirectionalIndexType> : GeneratorType, SequenceType {
	typealias Sequence = S

	private var currentIndex: Sequence.Index
	private let prestartIndex: Sequence.Index

	private let seq: Sequence

biku / gist:9919a56dc74c9cfb5655

Created April 8, 2015 17:19

random extension to Int

	public extension Int {
	/**
	Create a random num Int
	:param: lower number Int
	:param: upper number Int
	:return: random number Int
	*/
	public static func random (#lower: Int , upper: Int) -> Int {
	return lower + Int(arc4random_uniform(upper - lower + 1))
	}

biku / gist:5221907

Last active December 15, 2015 07:18

xCode sql debug

	In Xcode, go to the Product menu and choose Edit Scheme.
	Select Debug on the left.
	Select Arguments on the right.
	Under Arguments Passed On Launch, click the add button.
	Enter: -com.apple.CoreData.SQLDebug 1
	Click OK.

	source and more: http://www.cimgf.com/2013/01/03/nsfetchedresultscontroller-sectionnamekeypath-discussion/#more-1994

Victor Kolosov biku