Questions tagged [dart]
Dart is a class-based, optionally-typed programming language for building web and command-line applications. Dart compiles to modern JavaScript to run on the client and runs natively on the Dart VM for server-side apps.
31 questions
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Is this how Flutter BloC is suppose to be used?
I'm new to Flutter and BloC and it just seems quite different than what I've been using until now. In terms of state, I'm coming from the JS world of Vuex, Pinia and Redux and I've also worked a with ...
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Is this RenderObject implementation following the correct rendering algorithm and intended uses?
I'm trying to see if this RenderObject is well implemented or if it's doing something bad with respect to Flutter rendering algorithm, especially:
Is it ok to call ...
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Flutter class extends StatefulWidget and Riverpod extends ConsumerStatefulWidget
I've noticed a difference between the auto-complete code from VS Code using Flutter and the code shown in the Riverpod documentation.
Auto-complete code in VS Code using Flutter. If I do this and ...
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Proper Handling of a Single Initialized Multiple FocusNode That is Shared Between Multiple Widget Classes in Flutter
The code works properly in a simplified version of the program I wrote. Here's the code:
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a Hebrew Date picker package in Flutter: single and range date selections
I have implemented a working Hebrew Date Picker package (link on pub.dev) in Flutter that supports both single date and date range selection.
Here's what the date picker looks like in action:
Single ...
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268
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Flutter Cubit: 2 Screens and Listview
I try to program a small app to track my cost spendings. As state management I use Cubit. As I am a flutter beginner, I wanted to verify if I implemented it correctly.
The UI consists of 2 screens: 1 ...
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220
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Dart Non-Reentrant Async Lock
This class synchronizes access to an async resource. If retainFutureErrors is false, it will keep retrying until there is a success. Otherwise, the ...
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55
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Library for managing flutter rebuilds based on state changes
This is my new library for managing flutter rebuilds based on state changes. It is very similar to AnimatedBuilder but takes a factory to create the notifier instead of an instance of the notifier. It ...
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436
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Am I writing Flutter code in the correct style? [closed]
I'm cleaning up my Flutter code and I'm not sure if I'm writing my Flutter code in the correct style.
First, here's my code to import the file:
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LeetCode#494 target sum (dart is slower than python)
I'm trying to solve a LeetCode problem target-sum, in two languages: Python & Dart. The difference of time taken is shocking for me"
Python took ~70ms while Dart took ~900ms !! Why does Dart ...
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Authentication middleware using Dart Shelf
I'm using the shelf package from Dart to implement a backend for the realworld-example-app. According to the specs, some routes require authentication, some don't, and in others the authentication is ...
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OOP Pac-man game
INTRODUCTION
I am studying the book Five Lines of Code (2021) by Christian Clause. The book covers several techniques regarding refactoring legacy code. I am learning much and applying several of its ...
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Adding multiple items to a list in flutter
I'm new to coding in general and I am working in flutter right now. I've successfully been able to add single string objects into a list but I'm having issues adding an object with multiple strings ...
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464
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Should I add optional parameter to my function for test cases? [closed]
I have the function below, I want to access the context globally and I don't know if it's a good idea, I'm getting the context from the Application, I have TestAppliction in the test environment and I ...
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300
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Flutter input widget with multiple options (monthly/annual/currency/percentage)
I currently have the following code to build this widget:
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80
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I have a input grid with more than 40 input-fields hardcoded
I am new to flutter and i managed to build a working Grid which does what i want it to do but the code is a duplicated hell and i didn't manage to create it dynamically while still keeping track of ...
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Search filter for words in dart
I need to add search filters for firebase So that I can get search result easily and precisely
I was altering the code from hereThis Medium Post
I would like to optimize this code.
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84
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Finding powers of (x+1)
It appears to me that this has been before in all languages except dart...
Referenced in order btw, any improvements, any tips, any feed back would be appreciated...
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113
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Building an app in Flutter [closed]
I am just starting to code by myself in Flutter. I've built this so far and here is the image. Can you show me what would be better or cleaner code? I used Row widget for it, but I guess I should ...
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165
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Flutter: ToggledButtons using FlatButton
I'm new to Dart and Flutter and I would like to know what do you think about this code and if it's any way that I could improve it :).
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- 195
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1k
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Flutter - Set the state of the dynamically created child widgets
This is what I wan't to do:
In my app I've 2 custom widgets called SelectItems. If the user clicks on item, it changes the background color. Everything is working ...
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244
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NoSQL data model design for players in a game
I am modelling a game which can be single (player1 vs player2) or double (pair 1 vs pair 2, where each pair contains 2 players) and each game has a score. The game is group and date based e.g. Group A ...
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Custom permission Dialog in Dart
I'm using the flutter_simple_permissions plugin to request permission to read contacts on my flutter application. I want the app to quit when a user denies the permission, and need to show them a ...
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Flutter - Implementing a simple ListView with MVVM
I've implemented a simple ListView in MVVM that displays a few PrepSteps (short form of PreparationSteps). While implementing I wasn't sure about if my approach is "...
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328
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Regex to DFA parser in Dart
I've created a Regex to DFA parser, using Thompson's construction algorithm and epsilon-reduction. Here is the code:
builtins.dart:
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77
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Transform poor CSS into a more beatiful form in Dart
I have this script that opens a file containing (possibly) bad CSS, lexes the content of it and creates a new file with the same code in a more pleasant way to look at. It formats it and sorts the ...
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737
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Performance of RegExp vs Rune Loop
I was recently talking to someone about a function I wrote to mimic (very basically) the string interpolation function String.Format() found in the C# language. ...
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Snake Game in Dart
First project in Dart - looking for style tips. I feel like I'm writing it a bit like Java, and would like to learn how to write dart-y dart.
Also - what's the convention on multiple files in a ...
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A Sudoku game made from Google's Dart language
This is my first real web project and I have never touched JavaScript (barely touched CSS), so I just skipped that and went to dart for fun. Here's a live demo
The code for the dart file is down ...
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Providing core functionality orthogonal to business logic in Dart
Below is a simple Trade class with minimal business logic: primarily a method to get market value associated with the trade. But the trade needs the following pieces of core functionality, orthogonal ...
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