erkekin’s gists

erkekin / DFA.swift

Last active March 16, 2023 23:26

Deterministic Finite Automata in Swift

	// https://www.youtube.com/watch?v=oHVHkkah3MY&t=979s

	struct DFA<State: Hashable, Symbol: Hashable> {
	init(delta: [DFA<State, Symbol>.Pair : State], initialState: State, finalStates: Set<State>) {
	self.delta = delta
	self.initialState = initialState
	self.finalStates = finalStates
	}

	struct Pair: Hashable {

erkekin / Find non-repetitive combinations of a set

Created January 7, 2020 16:48

	extension Set {
	private func addCombination(prevCombo: [Element], pivotList: [Element]) -> [([Element], [Element])] {
	var pivotList = pivotList
	return (0..<pivotList.count)
	.map { _ -> ([Element], [Element]) in
	(prevCombo + [pivotList.remove(at: 0)], pivotList)
	}
	}

	func combinations(m: Int) -> [[Element]] {

erkekin / Fixture

Created October 4, 2019 22:32

A quick generic fixture reader

	import Foundation
	import XCTest

	struct Fixture<T: Decodable & Equatable> {
	let value : T
	init(url: URL) throws {
	let actualData = try Data(contentsOf: url)
	self.value = try JSONDecoder().decode(T.self, from: actualData)
	}
	func assert(_ t:T) {

erkekin / abbreviate.swift

Last active February 11, 2018 11:23

Gist to turn the sentence "MIDDLE EAST TECHNICAL UNIVERSITY" to "METU", Swift 4+

	private func abbreviation(of sentence:String) -> String{

	return sentence
	.components(separatedBy: CharacterSet.whitespacesAndNewlines)
	.flatMap{$0.first}
	.map{String($0)}
	.joined(separator: "")

	}

erkekin / resign.sh

Last active January 24, 2018 11:03

Fetches all branches of different git repositories in a directory

	# Creat a directory called all-repos, and clone all projects into it.
	mkdir all-repos
	cd all-repos
	git clone THEPROJECT1-GIT-ADDRESS project1
	git clone THEPROJECT2-GIT-ADDRESS project2
	.
	.
	.

erkekin / gist:8fe9f1628904e66cec91832ef3e4b669

Created February 24, 2017 06:25

A pagination struct


	protocol Pageable{
	var loading:Bool{get}
	var paginator:Paginator{get set}
	func fetchWith(paginator: Paginator)
	}

	struct Paginator {

	var page = 0

erkekin / Get url schema programmatically in Swift 3.0

Created February 9, 2017 08:17

	func getURLSchema() -> String?{

	guard let schemas = Bundle.main.object(forInfoDictionaryKey: "CFBundleURLTypes") as? [[String:Any]],
	let schema = schemas.first,
	let urlschema = schema["CFBundleURLName"] as? String
	else {return nil}

	return urlschema

	}

erkekin / CountedSubset

Last active August 27, 2016 16:59

Get a random fixed count subset of an array in Swift

	func getRandomElements<T:Equatable>(array:[T], count:Int) -> [T] {

	var randomPicks: [T] = []

	var randomIndex = Int.random(array.count)

	var randomPick = array[randomIndex]

	while randomPicks.count != count{

erkekin / gist:d6409183c8d8746aa13f

Created September 18, 2014 11:36

	### Keybase proof

	I hereby claim:

	* I am erkekin on github.
	* I am erkekin (https://keybase.io/erkekin) on keybase.
	* I have a public key whose fingerprint is 7060 F1FD EA9E 6BA7 F657 AA4C 959B 55E6 B416 AC08

	To claim this, I am signing this object:

erkekin / ✔

Created February 27, 2012 15:49

✔

Erk Ekin erkekin