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AAAlexandre Alcuvillaswiftuicentral.comMay 8 · 8 min read

Single Responsibility: Breaking Up Fat ViewModels in SwiftUI

The Single Responsibility Principle (SRP) states that a class should have one reason to change. It's the first letter of SOLID, and arguably the one most frequently violated in SwiftUI projects. The c

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Kkigyakigya.hashnode.devMay 2 · 12 min read

Don't Bury Your Backing Properties

In Android ViewModels, we often use a backing property. This is the common pattern where we have one private mutable field and one public read-only property: private val _uiState = MutableStateFlow(Ui

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GRGanesh Rama Hegdeandroidavatar.hashnode.devNov 8, 2025 · 9 min read

Chapter 19 - Testing the Domain,Data and Presentation layers for SearchImageUseCase

The following objectives need to be satisfied by the use case: Emits Loading, Success, and Error states in sequence. Interacts properly with the repository’s searchImage() flow. Handles both success and failure paths gracefully. Testing SearchIm...

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GRGanesh Rama Hegdeandroidavatar.hashnode.devNov 2, 2025 · 4 min read

Chapter 17 - Coding the ViewModel for the SearchImageUseCase

data class SearchImageUiState( val isLoading: Boolean = false, val errorMessage: String? = null, val searchResults: List<String> = emptyList() ) /** * ## ArtViewModel (Simplified Version) * * This ViewModel is responsible for fetching...

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GRGanesh Rama Hegdeandroidavatar.hashnode.devNov 1, 2025 · 3 min read

Chapter 11 - Testing the ArtViewModel

Now we will code the class ArtViewModelTest, which validates that the ArtViewModel in chapter 10 correctly collects and exposes data from the domain layer (via the GetArtUseCase). package com.learning.artsnapapp.presentation.viewmodel import app.cas...

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GRGanesh Rama Hegdeandroidavatar.hashnode.devNov 1, 2025 · 4 min read

Chapter 10 - Creating the ViewModel for GetArtUseCase

The ViewModel is the bridge between Domain and the UI. The objective of the viewmodel is to allow the flow of data upwards to the UI. package com.learning.artsnapapp.presentation.viewmodel import androidx.lifecycle.ViewModel import androidx.lifecycl...

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GRGanesh Rama Hegdeandroidavatar.hashnode.devOct 27, 2025 · 4 min read

Chapter 3 - LLD (Low-Level Design) – ArtSnap App

The ArtSnap App We are building an ArtSnap App, a lightweight and modular art collection platform where a user can: View a list of artworks stored locally in the database. Add new artwork details, including name, artist, year, and image. Search im...

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TATabassum Akter Nusratdependency-injection-di-in-swift.hashnode.devJul 2, 2025 · 2 min read

The SwiftUI Guide to Clean State Management and Dependency Injection

Why Use @StateObject in the App File? In SwiftUI, you use @StateObject when you want to create and manage a view model that your whole app will use. What is @StateObject? @StateObject is how you create and keep a view model (or any observable class) ...

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TATito Adeoyetitoadeoye.hashnode.devJun 12, 2025 · 19 min read

Django Backend Foundations: Building Blocks - Apps, Models, and Views

Hi there. Welcome back to Django Backend Foundations! In Part 1, we established our Django development environment, created our first project, and understood the critical roles of settings.py, manage.py, and the ASGI/WSGI interfaces. Our foundational...

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MPmohan patelwander-stories.hashnode.devMay 16, 2025 · 3 min read

Chai, Chill & CheQin: My Darjeeling Escape

I had witnessed Darjeeling from old movies and postcards, but nothing could prepare me for the real feeling of being at a hillside, observing clouds drift like curtains over tea gardens of green. Darjeeling is more than a destination — it is a big hu...

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#viewmodel

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Trending tags this week

Single Responsibility: Breaking Up Fat ViewModels in SwiftUI

Don't Bury Your Backing Properties

Chapter 19 - Testing the Domain,Data and Presentation layers for SearchImageUseCase

Chapter 17 - Coding the ViewModel for the SearchImageUseCase

Chapter 11 - Testing the ArtViewModel

Chapter 10 - Creating the ViewModel for GetArtUseCase

Chapter 3 - LLD (Low-Level Design) – ArtSnap App

The SwiftUI Guide to Clean State Management and Dependency Injection

Django Backend Foundations: Building Blocks - Apps, Models, and Views

Chai, Chill & CheQin: My Darjeeling Escape