Beginner – Generic Factory in Typescript

I'm new to typewriter, I have a class that works some services with the Rest API and caches the result, so in case of multiple function calls, only one network operation and multiple searches are in the cache.

I have created a demo prototype and need feedback. Are there any problems with the code? Maybe I forgot something? Ideas for improvement?

Class person {
Constructor (public readonly name: string, public readonly age: number) {}

hi (): void {
console.log ("Hello!% s,% d",, this.age);

Class dog {
Constructor (public read-only name: string) {}

give_me_the_pawn (): void {
console.log ("here you are");

Export interface cache {
set (key: string, value: T): void;
get (key: string): T | Zero;

Enter Factory = () => Cache;

Class Settings {
Constructor (public read-only createCacheFunc: Factory) {}

Function testFunc (Settings: Settings) {
let stringCache = settings.createCacheFunc();
stringCache.set ("person", "test string");

let personCache = settings.createCacheFunc();
let person = new person ("Paul", 25);
person.hi ();

personCache.set ("person", person);

let dogCache = settings.createCacheFunc();
let dog: dog = new dog ("dog");
dog.give_me_the_pawn ();

dogCache.set ("person", dog);

/// Usage

Class CacheBasedOnMap implements cache {
Private card: card;

Constructor() { = new map();

set (key: string, value: T): void {
console.log ("key inserted -% s", key, value); (key, value);

get (key: string): T | Zero {
if ( (key)) {
return (key)!
} else {
return zero;

Function createCache(): Cache {
Return new CacheBasedOnMap();

let s: Settings = new settings (createCache);
testFunc (s);

Thank you in advance.

Do I use the factory pattern directly in my code and how can I test it?

In my application I have an interface IEmailNotification this is an email and the concrete implementation has nothing to do with it mail Message Great to send it through SmtpClient I have used an adapter to let the communication between SmtpClient and IEmailNotification possible and the task of it adapter just delegate the call to send SmtpClient but after converting from E-Mail notification to mail Message with an abstract factory which in fact only copy the values ​​of an object into the newly created one mail Message Object.

The first question is:
My factory method uses an IEmailNotification parameter. Does this violate the main job of a factory that only creates objects?

public interface INotification
string To {get; }
string Body {get; }

public interface IEmailNotification: INotification
string From {get; }
string Subject {get; }
bool IsBodyHtml {get; }
string CC {get; }
string BCC {get; }
string ReplyToList {get; }
list AttachmentsPaths {get; }

public interface IEmailNotificationService: IService
void send (IEmailNotification notification);

public class EmailNotificationServiceAdapter: IEmailNotificationService
private ISmtpClient _client;
private MailMessageFactory _mailMessageFactory;

public EmailNotificationServiceAdapter (ISmtpClient client, MailMessageFactory mailMessageFactory)
_client = client;
_mailMessageFactory = mailMessageFactory;

public void Dispose of ()
_client.Dispose ();

public void send (IEmailNotification notification)
** using (var mailMessage = _mailMessageFactory.CreateMailMessage (notification)) **
_client.Send (mailMessage);

Public class LocalhostMailMessageFactory: MailMessageFactory
private string _redirectToEmail;

public LocalhostMailMessageFactory (string redirectToEmail, string backupBccEmail)
: base (backupBccEmail)
if (string.IsNullOrEmpty (redirectToEmail))
throw new ArgumentNullException (nameof (redirectToEmail));

if (! redirectToEmail.IsEmail ())
triggers a new ArgumentException (nameof (redirectToEmail));

_redirectToEmail = redirectToEmail;

public override of MailMessage CreateMailMessage (IEmailNotification emailNotification)
var mailMessage = new MailMessage ();

mailMessage.From = new mailaddress (emailNotification.From);
mailMessage.To.Add (_redirectToEmail);
mailMessage.Subject = emailNotification.Subject;
mailMessage.Body = emailNotification.Body;
mailMessage.IsBodyHtml = emailNotification.IsBodyHtml;

if (emailNotification.To.ToLower (). Contains ("shopfehler"))
mailMessage.Bcc.Add (new MailAddress (_backupBccEmail));

if (! string.IsNullOrEmpty (emailNotification.ReplyToList))
mailMessage.ReplyToList.Add (emailNotification.ReplyToList);

if (emailNotification.AttachmentsPaths.Count> 0)
foreach (var path in emailNotification.AttachmentsPaths)
mailMessage.Attachments.Add (new attachment (path));

return mailMessage;


redirectToEmail & backupBccEmail are required to handle the EmailNotification based on certain logical conditions

The second question is:
When I tried to test the logic of this method, it failed because it used an external resource when adding new attachments that did not find their paths on disk. What do you make of it?

device test
Note: I know that only one confirmation per test is recommended, but let's keep it simple and straightforward


public class EmailMailMessageFactoryTests
private EmailNotification _emailNotification;


public void SetUp ()
_emailNotification = new EmailNotification ("", ";", "subject", "body", true)
AttachmentsPaths = new list {"1", "2"},
CC = "",
BCC = ""

public void CreateMailMessage_WhenCalled_CreatesMailMessage ()
var emailMailMessageFactory = new EmailMailMessageFactory ("");

var result = emailMailMessageFactory.CreateMailMessage (_emailNotification);

Assert.That (result.From.Address, Is.EqualTo (_emailNotification.From));
Assert.That (result.To[0].Address, Is.EqualTo (_emailNotification.To));
Assert.That (result.Subject, Is.EqualTo (_emailNotification.Subject));
Assert.That (result.Body, Is.EqualTo (_emailNotification.Body));
Assert.That (result.IsBodyHtml, Is.EqualTo (_emailNotification.IsBodyHtml));

Assert.That (result.Attachments.Count, Is.EqualTo (_emailNotification.AttachmentsPaths.Count));
// this assert fails "FileNotFoundException"

Assert.That (result.CC[0].Address, Is.EqualTo (_emailNotification.CC));
Assert.That (result.Bcc[0].Address, Is.EqualTo (_emailNotification.BCC));


Maybe I'm abusing what's in my Code Factory Pattern!
thank you in advance

How to bypass "verify your account" (Factory Reset Protection)

There are complete instructions for various devices from RootJunky on YouTube. This first method works for some Samsung and LG devices, Your user can probably start with step 4.

  1. Restart in recovery mode (press and hold the Home button, the volume button, and the power button, and release the power button when the device is turned on / restarted).

  2. Perform a factory reset (press Volume Down to Delete data / factory reset is selected, press the power key and scroll down to Yes, delete all user information and press the on / off button again.

  3. Continue with the Device Setup Wizard until you are prompted for the Google Account login credentials.

  4. On a Samsung device, store this RootJunky APK on a USB flash drive and connect it to the device via OTG.

    For LG:

    • Back up, connect to Wi-Fi, and try the backup again. Then click Accessibility (Yes to bring up the following prompt).

    • Enable "Switch Access", enter the settings and set a key for "Overview", eg. Eg "Volume Down".

    • Return to accessibility, open the browser via Vision → Talkback → Settings → Privacy Policy and download the APK link above ( → Apps).

    • Press the button you have set up for overview, press Dual Window and select the file browser.

  5. When File Explorer starts, navigate to the APK and tap it to install it. If prompted for unknown sources, select the Settings option and enable the Unknown sources option.

  6. Complete the installation and select Open the application. The settings will then be opened.

    For LG:

    • Under User, add a new user account, go to it, and add your own Google Account via Setup. Then go to Settings → Users to the main user (owner) and from there to the main settings.
  7. Go to Backup and Reset and reset the data to factory settings. According to my other answer, this removes FRP from the device.

The APK in (4) is very simple and only opens the settings. You can use any other that does the same thing if you do not want to trust this source.

Nexus 5, 5X, 6 and 6P with 6.0.1; Goclever Quantum 2 400S with 5.1:

Insert an activated SIM card and call it from another phone. Answer the call, press the Add Line (Call Conference) key and enter * # * # 4646 # * # * or * # * # 4636 # * # * (worked on Nexus 5X). Touch Usage Statistics and then the Back button. You are in the settings and can restore the factory settings.

If the factory reset is disabled due to a security patch, you can instead create a new user account (go through and set up). From the second paragraph, follow the next instructions for the turbo.

You can do this without a sim through this exploit.

Motorola Droid Turbo with 5.1:

Go through the setup wizard until you reach the Privacy Information page (you may need to connect to Wi-Fi). Click the "Privacy Settings" link and then "View Motorola Privacy Policy." On this page, select any text and click the Search button to open the browser. Enter settings in the address bar and tap the suggested settings app.

Activate the Developer Options (by tapping the version code under Info over the phone seven times) then go to Developer Options and enable USB debugging. Connect your device to a PC with ADB installed (from here) and do it in a shell window:

content: // settings / secure --bind name: s: user_setup_complete --bind value: s: 1

Now you can go into the settings and perform a factory reset.

Motorola Droid X Pure with 6.0:

In the setup wizard, navigate to the Wi-Fi connection screen and select a password-protected network. Select "Show password", enter a password and select the password text. In the menu that appears, click Share and choose Gmail. Add a POP or Exchange account (Not a Gmail account) and (from the message that is filled in with the text "shared" by you) in the 3-point menu select "Settings" and then in the same menu the option "Manage accounts".

You should now be in the app settings. Follow the above turbo instructions from the second paragraph, and you're done!

For devices that do not use any of the above or similar methods, or after these exploits have been resolved, see my other answer.

Is this a factory pattern or strategy pattern? c / c ++ and suggest an alternative solution

The idea is that if we want to create an object of one type, we will use only one robot creator and one enumeration of the interface. I'd like to understand which template design I used because sometimes it looks like a factory and sometimes it's a strategy.

Should I use define or not? I'm also happy about new ideas for implementation.


    Class InterfaceRobot
InterfaceRobot ();
enum RobType {Y = 0, C = 1, D = 2, F = 3};

virtual void open () = 0;
virtual void close () = 0;



Class RobotCreator: public interfaceRobot
RobotCreator (InterfaceRobot :: RobType _robType);
not open ();
void ();
~ RobotCreator ();

Interface Robot * Robot; / ** pointer to InterfaceRobot ** /


RobotCreator :: RobotCreator (InterfaceRobot :: RobType _robType)
switch (_robType)
case InterfaceRobot :: C:
this-> Robot = new c ();
case InterfaceRobot :: Y:
this-> Robot = new y ();
case InterfaceRobot :: D:
this-> Robot = new D ();
case InterfaceRobot :: F:
this-> Robot = new F ();

void RobotCreator :: open ()
this-> Robot-> open ();

void RobotCreator :: close ()
this-> Robot-> close ();

RobotCreator :: ~ RobotCreator ()
cout << "d & # 39; tor of RobotCreator" << endl;
    if (this->Robot! = NULL)
Clear[]  this-> dlRobot;
this-> Robot = NULL;

Use in the main:

int main ()

RobotCreator rob (InterfaceRobot :: Y); ();
rob.close ();

RobotCreator rob2 (InterfaceRobot :: C); ();
rob2.close ();

samsung – After resetting to factory settings, the touch screen of the Android Galaxy Camera stops responding

I've met the strangest thing I've ever had. I have a galaxy gc100 camera, it works very well without any problems. Since I decide to lend it to my friend, I have carried out a factory reset. After resetting to factory settings, everything looks fine and the "Select Language" setup screen is displayed. BUT I can not touch anything on the screen. It seems that the touch does not respond at all until the screen turns off due to a timeout. And then I tried (1) a hard reboot, (2) went into maintenance boot mode by pressing the power button and zooming out, and clearing the cache and restoring factory settings. (3) flash stock rom. (4) Remove the battery and press and hold the on / off switch for more than 1 minute. Then insert the battery and start the computer. (made three times). But none of them works. This is just funny and I can not find anyone on the internet who has the same problem as me. Other people have met a non-responsive touch screen and then performed a hard reset to fix the problem. Mine is quite the opposite. I have no issues, but the factory reset / hard reset that causes the touchscreen does not respond to the first setup screen. Does anyone have any idea how I can handle this problem? Many thanks. (By the way, the system still works because I can adjust the volume and take screenshots with the physical buttons).

wi fi – Wi-Fi will not turn on after root. Not even with factory reset !!! Please help me

So my phone went completely bananas today. It was charging and I swear out of the blue that I got a message saying that the SD card memory was deleted. So I turned it off in a panic.
The phone then turned itself on and showed a message that Android was deleted, again in panic, I took out the battery.
When I turned it on, a message with a "dead" Android avatar was displayed on the screen and the boot options screen was displayed. I clicked on reeboot and it was reset to factory settings.
I was so angry and upset because my whole life and work was on my phone.
I spent the whole afternoon recovering the data. The only software that seems to find my files was $ 50. I live in a third world country, so it is impossible for me to pay. When I looked online, I found another one that looks promising, but I had to root my phone for it. In the past, I was very scared of it, but since I had an old phone, I once decided on a few little things.
Big mistake.
After rooting, my wi-fi was turned off … forever.
When I click on the Wi-Fi switch, it turns on and off for a second.
I can not turn it on.
So I decided to put it back hard, I mean, I had nothing to lose.
I still can not turn it on.

I really need this phone for work, and I have no money to get a new one. I'm desperate. Really.
I really hope someone can help
I understand so little about it, but I'm great at following instructions. I will be so thankful if someone can help.

It is a Samsung Galaxy J5, with Android 6.0.1

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