immutability-helper: I can $set an item in a map but not $merge it, why? How can i $merge it?

Using typescript to modify an immutable state using the npm package ‘immutability-helper’ i’m facing some strange error (at least for now). I can set an object but not merge it. Can you clarify why? Given the following data: export enum NetworkState { Checking, UpdateAvailable, Downloading, UpdateDownloaded, UpToDate, Error } export class Update { public networkState:…

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How to display different image after another with Glide?

I want to display an other image after a delay. Here is my code: public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ImageView imageView=findViewById(R.id.imageView); ArrayList<String> test = new ArrayList<String>(); test.add(“e”); test.add(“a”); if (test.get(0) == “e”) { Glide.with(this) .load(“https://something.something/something.jpg”) .into(imageView); try { Thread.sleep(3000); } catch (InterruptedException e) { e.printStackTrace(); }…

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How can I calculate the difference of two dates via Period class?

I have two dates : LocalDateTime start = LocalDateTime.of(2014,2,19,12,02,41,112); LocalDateTime end = LocalDateTime.of(2014,2,19,12,05,58,146); And I need to obtain two difference between start and end. So, I should receive : 3:17.034 ( 3 minutes, 17 seconds and 34 milliseconds ). Is it possible to calculate the difference via class Period ? I am confused because when…

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How to pass a List to a constructor of a new object using java lambda expression?

I have a problem where I want to convert a list of POJOs into DTOs and pass them into a wrapper object which is then returned. Consider this working piece of code: List<Device> devices = dbService.getDevices(…); List<DeviceDTO> devicesDTO = new ArrayList<DeviceDTO>(); for (Device d : devices) { devicesDTO.add(convertToDTO(d)); } WrapperDTO wrapper = new WrapperDTO(devicesDTO); I…

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