Flutter web app github 🔄 Simultaneously, ensure that the selected tab remains synchronized as the user scrolls through the list. capable of recording voice note and playing them Dependencies Flutter Audio Recorder (flutter_audio_recorder) More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. An example app showing how to embed Flutter in a web Here is an article on how to deploy web to Firebase and link to Telegram web app 👉 Telegram Mini Apps How to use There is a class TelegramWebApp which contains all the telegram web apis. js, bloc pattern, rxdart 🍁🍁 functionalities: login, register, change password, change avatar, forgot password. Automate Flutter app distribution effortlessly with GitHub Flutter Presence App integrated with geolocation (GPS) that can help your company or you as a developer to build a presence app. Rx, Lab) Flutter Firebase App for iOS, Android, Web & Desktop. From my experience of building and deploying Flutter web apps, I’m going to discuss the top 5 ways (step-by-step) to deploy Flutter web apps. testing_app - A sample app that shows different types of testing in Flutter. Jun 22, 2024 · 1. Feb 21, 2023 · e. e. By default, the generated page only works on User or Organization sites ex:user. The following sections show how to configure this action Flutter implementation of Telegram Web App. pure rxdart bloc pattern. Jun 12, 2023 · Learn how to deploy flutter web app using Github pages. To associate your repository with the flutter-web-app The purpose of the go_router package is that it is A declarative routing package for Flutter that uses the Router API to provide a convenient, url-based API for navigating between different screens and reduce complexity, regardless of the platform you're targeting (mobile, web, desktop), You can The Awesome Flutter Browser App is a versatile web browser built using Flutter. Build, test, and deploy beautiful mobile, web, desktop, and embedded apps from a single codebase. 📜🔗 May 1, 2021 · Probably the quickest way to see web in action is to deploy it on GitLab pages or GitHub pages. Feel free to contribute to the list, any The window_manager plugin provides comprehensive window management capabilities for Flutter desktop applications, enabling full control over window size, position, appearance, close behavior, and listening to events. 🌍 Responsive web app powered by Flutter and Dart. Here are some resources to get you started: Flutter Docs: Adaptive Desgin - Layout Widgets Flutter Tutorial - Host Flutter Website On GitHub Pages | For FREE [2021] 1/2 Build & Deploy Web App Publish and host Flutter Website on GitHub Pages for FREE. Serverpod is a next-generation app and web server, built for the Flutter community. This project is generally Aug 25, 2021 · Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. Flutter Tutorial - How To Run Flutter Web App On Chrome? [2021] In 120 Seconds This is a simple web admin dashboard template made with flutter web, but the ios and android apps can easily be created with just some clicks with the same codebase! This project uses the GetX package for flutter for a complete solution in navigation, http requests and state management, and it is Jan 17, 2025 · Example: Github Action in Flutter Project. Contribute to alext234/flutter-simple-web-app development by creating an account on GitHub. -10 Minutes only need to Create the app -Push Notification Available Project Repo Description; API Dash: Link: API Dash is a beautiful open-source cross-platform API Client built using Flutter which can help you easily create & customize your API requests, visually inspect responses and generate API integration code. Build the Project: Run the following command to build the Flutter web project: flutter build web. installable personal portfolio web-app built with Flutter. Iremos falar de como deveremos configura-lo depois. . Now create a new web-release. Stores data in Firebase. To associate your repository with the flutter-web-app Description: This open-source project is a Flutter web admin panel built with the power of Firebase, aimed at providing developers with a robust and scalable solution for managing and controlling their applications. You can change that by specifying the baseHref argument, so the site will work on a Project Site, ex:user. By leveraging the capabilities of Flutter for web development and integrating This repository just example for how flutter consume ASP. local_offer Tags. This is an eCommerce Application developed using FlutterFire (Flutter+Firebase). Clone via HTTPS Clone using the web URL. - pichillilorenzo/flutte Jan 19, 2021 · Visiting https://flutter-web-test-3d9e0. I strongly recommend reading documentation provided by the Flutter Team, which presents an extensive array of widgets in various formats. Originally created by Alif Rachmawadi. API Dash is a beautiful open-source cross-platform (macOS, Windows, Linux, Android & iOS) API Client built using Flutter which can help you easily create & customize your HTTP & GraphQL API requests, visually inspect responses and generate API integration code. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. They are: Firebase Hosting; Github Pages A Flutter Web responsive website sample. 2 There are lots of simple Flutter app examples out there, but very few show how to tie together the elements you need to put an app into production. Flutter安装和配置，Flutter开发遇到的难题，Flutter示例代码和模板，Flutter项目实战，Dart语言学习示例代码。 A web portfolio made with flutter. Flutter collection Web is painstakingly made to offer a dependable and aesthetically beautiful experience on a range of devices. A Flutter sample app that shows the end product of the Cloud Nex Mar 8, 2024 · A step-by-step tutorial showing how to deploy your Flutter web apps to GitHub Pages using Makefiles. 2. can we "fake" it with a static HTML landing page that then loads the App in the background and replaces the HTML page once the Flutter App has loaded? -> Feat: Loading Screen #319-> [PR] Adding splash screen #321; Deploy the Flutter Web App to GitHub Pages: Feat: Deploy Flutter Web App to GitHub Pages #322-> [PR] Deploy to Github pages. The main goal of this repository is to find free open source apps and start contributing to it. Prerequisites: Equip Your Arsenal. demo web add-to-app embedding. A few resources to get you started if this is your first Flutter project: Lab: Write your first Flutter app Flutter V2. Aug 14, 2024 · Deploying a Flutter web application to GitHub Pages is a great way to share your project with the world. Flutter For Web: Getting Started | Migrating PokemonApp to Web. (in your project Nov 21, 2022 · After that, this workflow will be able to release apps without any issues; If you are still facing issues during deployment, make sure all config and permissions are correct, or check this issues page; Flutter web release to GitHub pages. This snippet was a "life saver" looked for hours to "get into" GridView stuff, can't find a good solution like this one. This will also occur when Flutter is upgraded (e. This project is a starting point for a Flutter application. For more information, see "Integrating fastlane with existing workflow". Flutter Github Following Application, Using Flutter Provider and Flutter HTTP to get data from Github API. Contribute to sureshg/flutter-web-app development by creating an account on GitHub. github. Web2App-Flutter Convert websites to Mobile Application - ios and android. Flutter collection Web is painstakingly made to offer a dependable and aesthetically beautiful experience on a range of devices. Do not forget to change Proxy your AVD to Manual proxy configuration Hostname to 10. dart firebase frontend backend flutter flutter-admin ecommerce-app velocityx Deploy Flet app as a web app and view it in a browser. TOKEN }} publish_dir: . You can do this by committing and pushing the contents of the build/web folder to your repository. 🔥 👍 🌟 ⭐ ⭐⭐ Flutter all you want. Checkout Repository - name: Checkout Repository uses: actions/checkout@v3. The screen is white. io/repoName. NET CORE WEB API in Localhost. dashboard-templates flutter-ui flutter-app flutter-web Easy WebApp Wrapper built in Flutter. //web-portfolio-ddd55. Flutter安装和配置，Flutter开发遇到的难题，Flutter示例代码和模板，Flutter项目实战，Dart语言学习示例代码。 This project is a starting point for a Flutter application. Flutter transforms the entire app development process. For a full example you can check out the workflow of wrestling_scoreboard Oct 16, 2020 · Functioning Qaswa Admin App created using Dart with Flutter. The progressive web app is made with AngularDart. Mar 25, 2024 · More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. With WebF, Web Apps and Flutter Apps share the same rendering context. Feb 18, 2022 · Vamos criar o flutter_web. The design and content of the website will adjust smoothly to provide maximum usability regardless of the device you're using to see it—a giant desktop, a laptop, a tablet, or a tiny Android smartphone. I have tried to collect all the basic features of any eCommerce App into this application (illustrations included in repository). Jan 12, 2023 · Build the web version of your app by running the following command: flutter build web -t lib/main_production. A dashboard app that displays daily entries. html of a flutter app so it is launched in a custom hostElement. Flutter Web: Deploying Portfolio App To Github. Package it as a standalone desktop app for Windows, macOS, and Linux. The challenge aimed to design and implement an attractive and user-friendly mobile application for a virtual coffee shop. LaCoro Q-commerce app - An open source quick commerce app in Mar 17, 2020 · Flutter for web: 5 ways to deploy a Flutter web app (IMO) — Firebase Hosting, Github, Netlify, CodeMagic Static pages & release on AWS S3. Thank you! Feb 13, 2020 · So join me on the journey how to create a Flutter web app and implement the whole thing on GitHub Pages. Flutter is Google's UI toolkit for building beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase. Choose your hosting source directory; this could be an existing flutter app. This Flutter dashboard template, which you can find on GitHub, is a comprehensive solution for your app's backend needs. io/. Rapidinho - Unofficial delivery app for Rapidinho made by GDG Luanda . It worked on the first release (the page was functional, all content worked), and then I made some updates and attempted to redeploy and the web page now shows up blank. A comprehensive travel management platform consisting of a web application for administrators and a mobile application for clients, fully developed using Flutter and Firebase as the backend. web_embedding - This directory contains examples of how to embed Flutter in web apps (without iframes). 0. element_embedding_demo - Modifies the index. Let’s get An example app showing how to embed Flutter in a web application Android and iOS projects that each import a standalone Flutter m Demonstrates simple way to share business logic between a Flutte Sample apps that showcasing Flutter's animation features. Responsive User Profile app for Web and Mobile using Flutter. Choose whether to set up automatic builds and deploys with GitHub. That hero is GitHub Actions, here to automate the deployment process. #323 More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. IO | Peanut Tutorial | Part 2. Welcome to the Flutter-TDD-Clean-Architecture-E-Commerce-App GitHub repository! This project is a showcase of modern mobile app development practices, leveraging the power of Flutter, Test-Driven Development (TDD), Clean Architecture, and the BLoC (Business Logic Component) package. Grocery-App - Flutter Grocery Shopping App by Widle; Flutter Games - Flutter app for purchasing and renting games by Ray Li; Plantly - App concept where you can purchase and get info of plants by Ivascu Adrian. Features user authentication, real-time property updates, and admin-agent chat functionality for seamless communication. It aims to provide a seamless experience across Web, Windows, macOS, Android, and iOS. Sep 19, 2023 · In this guide, we will walk through the steps to host a Flutter web project on GitHub Pages. To associate your repository with the flutter-web-app Dart SDK Version 2. web. Oct 8, 2022 · This is a simple documentation, to publish a Flutter Web application on GitHub pages and show/share it with friends and colleagues. Share Copy sharable link for this gist. Aug 9, 2024 · More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. To enable flutter web, you have to set up your Flutter CLI properly, and after that, you have to make sure you are on the right channel. A Completed More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. The Android & iOS apps are made with a single Flutter codebase. yml workflow and paste the following code: Lab: Write your first Flutter app Cookbook: Useful Flutter samples For help getting started with Flutter, view our online documentation , which offers tutorials, samples, guidance on mobile development, and a full API reference. Contribute to olayemii/flutter-web-portfolio development by creating an account on GitHub. * has officially introduced web support on its stable branch. Automates the build and deployment of your Flutter web app on Github gh pages Note: the --web-renderer argument is deprecated in flutter 3. … More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. 0 or greater. Vamos primeiramente configurar o GitHub Actions. This illustrates a streamlined workflow for deploying a web application using GitHub and Vercel. Contribute to rohitsangwan01/flutter_telegram_web_app development by creating an account on GitHub. As a passionate Flutter developer, I took this opportunity to explore the capabilities of Flutter and demonstrate my skills in UI/UX design Mar 17, 2020 · Before releasing the Flutter web app, it is required to create a release bundle and a few of the best practices to release, which are explained here in detail. A few resources to get you started if this is your first Flutter project: Lab: Write your first Flutter app; Cookbook: Useful Flutter samples We recommend Flutter developers check out the following resources: Wonderous (web demo, App Store, Google Play, source code): A Flutter app that showcases Flutter's support for elegant design and rich animations. flutter-apps flutter-web flutter-website flutter-web-app Jul 13, 2023 · We’ll cover creating the web project, selecting the appropriate Flutter channel, activating the web application, building your web application, and publishing it to GitHub. Flutter offers a rich set of widgets which are essential for creating responsive layouts and widgets. app. Setup firebase account/project; Copy Firebase Project Config settings and replace variable firebaseConfig at src/web/index. Create a Flutter app. Available for Mobile,Web,Desktop. With hero animations and support for light and dark modes, it provides an immersive browsing experience. Readme Code of conduct. Works on iOS and Android - venosyd/flutter_web_app If you're new to Flutter the first thing you'll need is to follow the setup instructions. 0 By Flutter and Angular. Flutter Web: Making a Responsive Portfolio App | Part 1. Once Flutter is setup, you can use the latest stable channel: flutter channel stable; flutter upgrade; Once on stable you're ready to run the app on your local device or simulator: flutter run -d ios; flutter run -d android A simple flutter hello app . Build, Release, Deploy Flutter Web App by publishing and hosting your Flutter Web Nov 21, 2024 · If you're in an empty directory, you'll be asked to choose your web framework. Deploy the app to Firebase Hosting: Aug 9, 2021 · This repository showcases my submission for the Flutter Coffee Shop UI Challenge. 17. Our E-Commerce app is a prototype built using Flutter that offers a responsive UI and product details fetched from a JSON file. A standard news application with a ready-made backend and admin panel. The action itself runs on Linux, Windows, and macOS. io. Flutter安装和配置，Flutter开发遇到的难题，Flutter示例代码和模板，Flutter项目实战，Dart语言学习示例代码。 A Full-Featured Mobile and Desktop Browser App (such as the Google Chrome mobile browser) created using Flutter and the features offered by the flutter_inappwebview plugin. by running the flutter upgrade command). Check out the agenda for this year's Google I/O! Aug 21, 2024 · The working mechanism of Vercel. Flutter install,flutter samples,Flutter projects,Flutter plugin,Flutter problems,Dart codes,etc. Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. We are building the product around a number of target scenarios, as described in our blog, and we'd appreciate your feedback on feature gaps or suitability for these scenarios, as well as other scenarios for which you find Flutter useful on the web. Create responsive dashboard Project Management design using Flutter - firgia/FD-Project-Management A few resources to get you started if this is your first Flutter project: Lab: Write your first Flutter app; Cookbook: Useful Flutter samples; For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference. Maintained by Bartek Pacia. Cirrus; Travis; GitLab; CircleCI. The flutter-web-app flutter+vue3，flutter webview 离线嵌入vue3前端\flutter嵌入前端vue3，界面纯vue3前端 - TosakaWolf/flutter-app-web Nov 27, 2021 · Steps to Reproduce I create flutter web app I run on local, it's work well I deploy to GCP My tester team test it to open the website, it's work But on my laptop, it's doesn't work. No content is displayed, and it only shows the generic title and favicon. :butterfly: A flutter demo web app. Install it on mobile as PWA or view via Flet app for iOS and Android. Cab offers you just about everything you are looking for in a free taxi service website template. If you worry that this method might compromise your security, Don't worry, this method won't harm you an inch because we won't be giving full access to it. Developed as a personal project, it utilizes a modern tech stack comprising Flutter for the frontend, Django Rest Framework for the backend API, and Go for the server component. Dec 15, 2019 · after enabling web, We can create a new project which comes with web support flutter create my_new_project or we can add web support to an existing project with flutter create . It uses Flutter Framework for App Frontend and Backend, and Firebase as server maintaining Databases and Storage requirments of the app. 0 or greater Dec 28, 2024 · Embed Embed this gist in your website. Using Getx and Firebase. First step: Installation of Flutter. beauty user interface and have a multi user ( admin and employee ). With more than 40 screens, a . io/devfolio [DEPRECATED] resume dart website portfolio flutter flutter-web jaspr Resources. Flutter Salon Booking App , from Dribbble Ui react nodejs javascript express web-development mongodb frontend backend More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. Whether you're accessing the website on a large desktop screen, a laptop, a tablet, or a small Android smartphone, the layout and content will adapt gracefully to ensure optimal usability. The Virtual PDF Library is an open-source, cross-platform application designed to streamline PDF document management across various devices. app/, we find our web app hosted!. Flutter app 🎎 based passwordless web authentication A voice recorder app that is built using Flutter i. It allows you to write your server-side code in Dart, automatically generate your APIs, and hook up your database with minimal effort. With Taxi, you bring your transportation FlareLine is a free and open-source admin dashboard template built on Flutter providing developers with everything they need to create a feature-rich and data-driven: back-end, dashboard, or admin panel solution for any sort of web/android/iOS project. Developer environment Using the Quick Hosting Setup describe above you can quickly get started building out your development environment. Demonstrates AdaptiveScaffold and NavigationRail. GitHub Pages allows you to showcase your Flutter web app to the world with ease. You can also change the appearance of this application easily or add new features. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. While we are far from code complete, we're ready for you to start developing and experimenting with Flutter for web. Let’s dive in More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects. Flutter Web: Deploying Flutter UIKit to Github Pages | Peanut Tutorial. It works on Linux, Windows, and macOS. Lets see how to do this in 5 minutes ⏳. For example, when installed from GitHub (as opposed to from a prepackaged archive), the Flutter tool will download the Dart SDK from Google servers immediately when first run, as it is used to execute the flutter tool itself. 29. GitHub Pages is a free service that can host static websites directly from a GitHub repository. The last item in this best fresh best flutter app templates 2020 selection Flutter News App with Admin Panel. Develop an E-Commerce app in Flutter with clean Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. Latest update: Support for Flutter 3. Save carzacc/e3ee859f99145166635e86387e6877dd to your computer and use it in GitHub Desktop. bloc pattern without library Finally the invoice is transformed (app/Transformers/) and returned as a response via Fractal. 0 hence it will be ignored flutter version is or above 3. This is the most basic embedding example. 2 and Port number [adapted to your PORT API Futter CRM Dashboard is a cross-platform Customer Relationship Management application developed using Flutter. Nov 2, 2023 · Flutter, our trusty sidekick, is the ultimate tool for crafting stunning web apps. A lightweight alternative to postman Oct 8, 2023 · Flutter TDD Clean Architecture E-Commerce App – EShop. A Huge Collection of Flutter App templates inKino is a multiplatform Dart app for browsing movies and showtimes for Finnkino cinemas. To associate your repository with the flutter-web-app WebF provides a rendering engine which follows the W3C standards like web browsers do. Building and deploying Flutter apps with Fastlane. travel flutter travel-app flutterapps travel-app-ui single-vendor GitHub is where people build software. It can render HTML/CSS and execute JavaScript. 10 Adding Web Support For New & Existing Projects A Flutter Web app powered by Firebase for property management. Flutter Web : Flutter 1. g. Explanation: Here we use a pre-created action called checkout which checks out your repository code so that the 🔥 👍 🌟 ⭐ ⭐⭐ Flutter all you want. dart-package cab-service flutter-example-app flutter-apps Aug 2, 2022 · It is because we build the web app behind the hood and then push the commit to deploy into gh-pages with your GitHub credentials. Github pages is one of the best feature in Github that allows you to deploy your web app through repo Facilitate automatic scrolling of the listView in a Flutter application when the active tab bar changes. Flutter SDK Version 3. Choose Flutter Web. Contribute to minikin/flutter-web-demo development by creating an account on GitHub. json demo file is available. Select a region to host your files. This is a Flight Ticket Booking App Built with Flutter and Dart and works on iOS, Android & Web. Aug 17, 2018 · ️ [active] 🌰[bloc_pattern] [rxdart] [stream] 🍄 simple auth app flutter, server node. html; enable Firebase social authentications; update Firebase Rules. Before we embark on our journey, here's what you need: A Flutter web app that's itching to go More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. GitHub is where people build software. Almost, too obvious, don’t you think? But you know the gist of it; keeping things simple and to the point is one of the best approaches to succeed online. It's built on top of the flutter rendering pipelines and implements its own layout and painting algorithms. Simple interface, standard functionality, as a state management system provider. Nov 12, 2021 · 3. It offers a user-friendly interface and a wide range of features, making it a powerful alternative to popular browsers like Chrome. Mar 30, 2020 · Instantly share code, notes, and snippets. dart doctor-appointment-management health-care-application flutter-web doctor-appointment-booking doctor-appointment-booking-system flutter-doctor-appointment flutter-health-app flutter-medical-app Updated May 1, 2021 Install Flutter environment; Download This GitHub repository; install Flutter packages *pub get) and Flutter web -> Flutter create . code Source Code. This command generates the necessary files for the web deployment. "# flutter_webview" Oct 7, 2023 · - name: 'Run flutter pub get' run: flutter pub get # - name: 'Run Test(s)' # run: flutter test - name: Enable flutter web: run: flutter config --enable-web - name: 'Build Web App' run: flutter build web - name: deploy: uses: peaceiris/actions-gh-pages@v3: with: github_token: ${{ secrets. 0 web support is native, so we just need to use latest stable version: flutter channel stable flutter upgrade flutter create flutter_web Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. /build/web - name: Deploy to Flutter environment for use in GitHub Actions. A Flutter Web app More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. First step is to create a Flutter project. Flutter Web + GitHub Pages templates. 4. A GitHub action of flutter_release to build, release, publish and deploy Flutter apps for Web, Android, iOS, macOS, Linux, Windows. Currently in the development phase, this project offers a free version that serves as a dashboard and template for users to utilize and extend. Here are some of the Aug 1, 2021 · In this blog post, I would like to share how you can use GitHub actions to deploy your open-sourced Flutter web app without exposing any secrets or API keys that are crucial to your application. Showcases how to use Firebase, but uses a mock backend by default. Launch App. Contribute to sbis04/explore development by creating an account on GitHub. Learn more about clone URLs 💻 Old Flutter App: https://mhmzdev. Material 3 Demo (web demo, source code): A Flutter app that showcases Material 3 features in the Flutter Material library. Here’s a breakdown of the process: Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. Since 2. dart , This will generate the necessary files for your web app in the “build/web Flutter portfolio Web is meticulously designed to provide a consistent and visually pleasing experience across a wide variety of devices. To associate your repository with the flutter-web-app 🔥 👍 🌟 ⭐ ⭐⭐ Flutter all you want. Contribute to bizz84/flutter_web_apps_template development by creating an account on GitHub. Today, I'm excited to present a Flutter-based Admin panel, often referred to as a dashboard UI. In my process of evaluating Flutter maturity and readiness for production apps, I started to put together the You need to click REQUEST first, before you will get access to THIS Source Code and of all my other Flutter Videos. yaml. Upload to GitHub: Upload the generated build files to your GitHub repository. But to truly set it free on the web, we need a hero. Apr 17, 2022 · More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. InKino showcases Redux, has an extensive set of automated tests and 40% code sharing between Flutter and web. This guide shows how to set up fastlane and then integrate it with your existing testing and continuous integration (CI) workflows. Convert any website to ios and android application. 🦸 GitHub Actions and Automatic Deployment… We can now, push everything to GitHub, and we’ll see that there are Oct 22, 2022 · I created a web app in Flutter and deployed to the web using GitHub Pages. flutter iOS & Android Food Shop App with a Admin Web panel Apr 18, 2022 · Flutter collection Web is painstakingly made to offer a dependable and aesthetically beautiful experience on a range of devices. tnqgwyfemeebaxtrvrfogvhjuerncimsemmcdoroddemnsvnxcudrsrrubdviywafpnephb