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.
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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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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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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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Remove else-if statement from multi-conditional logic
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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Parse Back4App database as a master database change log rather than actual database- thoughts on this design principle?
first post here. I'm looking for some general input as to the correctness of what I'm trying to do here. Is this a good idea, bad idea, what could be plus points or negative aspects to this design?
If ...
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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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Flutter input widget with multiple options (monthly/annual/currency/percentage)
I currently have the following code to build this widget:
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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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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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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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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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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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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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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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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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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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