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//
//  NBResponderChainUtilities.h
//  
//  Created by Nicolas @ bou.io on 19/04/13.
//

#import <UIKit/UIKit.h>

@interface UIView (NBResponderChainUtilities)
- (UIView*) nb_firstResponder; // Recurse into subviews to find one that responds YES to -isFirstResponder

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    ACTION = build
    AD_HOC_CODE_SIGNING_ALLOWED = NO
    ALTERNATE_GROUP = staff
    ALTERNATE_MODE = u+w,go-w,a+rX
    ALTERNATE_OWNER = grantdavis
    ALWAYS_SEARCH_USER_PATHS = NO
    ALWAYS_USE_SEPARATE_HEADERMAPS = YES
    APPLE_INTERNAL_DEVELOPER_DIR = /AppleInternal/Developer
    APPLE_INTERNAL_DIR = /AppleInternal
    APPLE_INTERNAL_DOCUMENTATION_DIR = /AppleInternal/Documentation

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//
//  MetalVideoRenderer.swift
//  RTEVideoEditor
//
//  Created by weidong fu on 2020/1/1.
//  Copyright © 2020 Free. All rights reserved.
//
import UIKit
import AVFoundation

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class LoginViewController {
  var userSession: UserSession?
  
  
  func login(_ userName: String, password: String) {
    userSesson?.login(userName, password)
  }
}

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Class UserSession {
   static let shared: UserSession
}

Class LoginViewController {
  
  func login(_ name: String, password: String) {
     ...
     UserSession.shared.login(name, password)
     ...

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protocol Service {}
Class ServiceLocator {
   func register(_ service: Service, for type: ServiceType)
   func resolve(_ type: ServiceType)
}

ServiceLocator.shared.register(UserSession(), type: UserService.self)

Struct UserService: Service {}

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class LoginViewController {
  private let userSession: UserSession
  
  init(_ userSession: UserSession) {
    self.userSession = userSession
  }
  
  func login(_ userName: String, password: String) {
    userSession.login(userName, password)
  }

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typealias Login = (_ name: String, _ password: String) -> Void

class LoginViewController {
  func login(_ login: Login, name: String, password: String) {
    ...
    login(name, password)
    ...
  }
}

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class LoginViewController {
  private let userSession: UserSession
  
  init(_ userSession: UserSession = UserSession()) {
    self.userSession = userSession
  }
}

let vc = LoginViewController()
let vc = LoginViewController(userSession)

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import Foundation
import FeatureService

public class Feature2 {
    public struct Dependencies {
        let feature1: Feature1Service
        let feature3: Feature3Service
        
        public init(feature1: Feature1Service, feature3: Feature3Service) {
            self.feature1 = feature1