Otbivnoe

protocol ProfileRoute {
    func openProfile(for user: User)
}

extension ProfileRoute where Self: UIViewController {
    func openProfile(for user: User) {
        let profileViewController = ProfileViewController(user: user)
        present(profileViewController, animated: true, completion: nil)
    }
}

Otbivnoe

extension UIViewController {
    func openProfile(for user: User) {
        let profileViewController = ProfileViewController(user: user)
        present(profileViewController, animated: true, completion: nil)
    }
}

Otbivnoe

#!/bin/sh

if [ -n "$XcodeProjectPath" ]; then	
  open -a Terminal "$XcodeProjectPath"/..
else		
  open -a Terminal "$XcodeWorkspacePath"/..
fi

Otbivnoe

extension RawRepresentable {

    static var allValues: [Self] {
        var index = 0
        let iterator: AnyIterator<Self> = AnyIterator {
            let current = withUnsafePointer(to: &index) { unsafePointer in
                unsafePointer.withMemoryRebound(to: Self.self, capacity: 1) { unsafePointer in
                    unsafePointer.pointee
                }
            }

Otbivnoe

/// Respresents a disposable resource.
public protocol Disposable {
    func dispose()
}

/// Represents disposable resource with state tracking.
public protocol Cancelable: Disposable {
    var isDisposed: Bool { get }
}

Otbivnoe

let disposable = BooleanDisposable()
print("isDisposed = \(disposable.isDisposed)")

print("dispose")
disposable.dispose()

print("isDisposed = \(disposable.isDisposed)")

// log:
// isDisposed = false

Otbivnoe

let disposable1 = Disposables.create { print("disposed-1 ☠️") }
let disposable2 = Disposables.create { print("disposed-2 ☠️") }

let singleAssignmentDisposable = SingleAssignmentDisposable()

print("set disposable1")
singleAssignmentDisposable.setDisposable(disposable1)

print("set disposable2")
singleAssignmentDisposable.setDisposable(disposable2) // ⚠️⚠️⚠️ fatal error 

Otbivnoe

let disposable1 = Disposables.create { print("disposed-1 ☠️") }
let disposable2 = Disposables.create { print("disposed-2 ☠️") }
let disposable3 = Disposables.create { print("disposed-3 ☠️") }

let disposable = CompositeDisposable(disposable1, disposable2)

print("insert disposable3")
let key3 = disposable.insert(disposable3)

if let key = key3 {

Otbivnoe

let disposable1 = Disposables.create { print("disposed-1 ☠️") }
let disposable2 = Disposables.create { print("disposed-2 ☠️") }
let disposable3 = Disposables.create { print("disposed-3 ☠️") }

let disposable = CompositeDisposable(disposable1, disposable2)

print("dispose")
disposable.dispose()

print("insert disposable3")

Otbivnoe

let disposable1 = Disposables.create { print("disposed-1 ☠️") }
let disposable2 = Disposables.create { print("disposed-2 ☠️") }
let disposable3 = Disposables.create { print("disposed-3 ☠️") }

let disposable = CompositeDisposable(disposables: [disposable1, disposable2, disposable3])

print("dispose")
disposable.dispose()

// log: