Lazar Otasevic sisoje

SwiftUI / ex C++ dev

sisoje / ComposableNetworking.swift

Last active July 11, 2025 06:32

The Composable Networking

	import Foundation
	import SwiftUI

	// MARK: - errors

	enum ComposableNetworkingError: Error {
	case missingBearerToken
	case missingRefreshToken
	}

sisoje / Binding+Boolify.swift

Created December 13, 2023 08:15

Wrap an optional item to a bool binding

	import SwiftUI

	extension Binding {
	static func boolify<T: Any>(_ binding: Binding<T?>) -> Binding<Bool> {
	Binding<Bool> {
	binding.wrappedValue != nil
	} set: { newValue in
	guard !newValue else {
	assertionFailure()
	return

sisoje / UIImage+FixOrientation.swift

Last active June 25, 2023 20:32

Fix UIImage orientation

	extension UIImage {
	var fixOrientationTransform: CGAffineTransform {
	let angle = CGFloat((imageOrientation.rawValue & 2) >> 1 - ((imageOrientation.rawValue & 1) << 1)) * .pi / 2
	let flipX = CGFloat(1 - ((imageOrientation.rawValue & 4) >> 1))
	return CGAffineTransform(scaleX: flipX, y: 1).rotated(by: angle)
	}
	}

sisoje / DummyTypes.swift

Last active April 26, 2019 15:19

	@objcMembers
	class DummyTypes: NSObject {
	@NSManaged var bool: Bool
	@NSManaged var decimal: Decimal
	@NSManaged var int: Int
	@NSManaged var double: Double
	@NSManaged var url: URL
	@NSManaged var uuid: UUID
	@NSManaged var date: Date
	@NSManaged var string: String

sisoje / IdentityKeyPath+Bad.swift

Last active March 11, 2019 11:31

	func inPredicateBad<S: Sequence>(_ values: S) -> NSComparisonPredicate {
	let ex1 = NSExpression(forKeyPath: \S.Element.self)
	let ex2 = NSExpression(forConstantValue: values)
	return NSComparisonPredicate(leftExpression: ex1, rightExpression: ex2, modifier: .direct, type: .in)
	}

	func inPredicateOk<S: Sequence>(_ values: S) -> NSComparisonPredicate {
	let ex1 = NSExpression.expressionForEvaluatedObject()
	let ex2 = NSExpression(forConstantValue: values)
	return NSComparisonPredicate(leftExpression: ex1, rightExpression: ex2, modifier: .direct, type: .in)

sisoje / Fulfiller+Example.swift

Last active February 14, 2019 14:53

	extension XCTestExpectation {
	var fulfiller: DeinitBlock {
	return DeinitBlock {
	print("Fulfill \(self.description)")
	self.fulfill()
	}
	}
	}

	class FillfilerTests: XCTestCase {

sisoje / TestFulfill.swift

Last active February 15, 2019 10:48

	import XCTest
	import Foundation

	class TestFulfill: XCTestCase {
	class FulfillOnRelease {
	let ex: XCTestExpectation
	init(_ ex: XCTestExpectation) {
	self.ex = ex
	}
	deinit {

sisoje / Property+Example.swift

Last active February 7, 2019 23:33

sisoje / MutationOperator.swift

Last active February 7, 2019 23:33

	infix operator ~: MultiplicationPrecedence

	@discardableResult
	func ~<U: AnyObject>(object: U, block: (U) -> Void) -> U {
	block(object)
	return object
	}

	let titleLabel = UILabel() ~ {
	$0.font = .systemFont(ofSize: 22)

sisoje / KeyPath.swift

Last active February 7, 2019 11:42

	// compiles:
	let goodKeyPath1: KeyPath<Person, String> = \Person.name
	let goodKeyPath2: KeyPath<Person, Int> = \Person.age

	// doesn't compile:
	let badKeyPath = \Person.password