#performance #advanced #bestpractices
Performance best practices
Generally, Flutter applications are performant by default, so you only need to avoid common pitfalls to get excellent performance instead of needing to micro-optimize with complicated profiling tools. These best recommendations will help you write the most performant Flutter app possible:
👉 Controlling build() cost
👉 Apply effects only when needed
👉 Render grids and lists lazily
👉 Build and display frames in 16ms
Performance best practices
Generally, Flutter applications are performant by default, so you only need to avoid common pitfalls to get excellent performance instead of needing to micro-optimize with complicated profiling tools. These best recommendations will help you write the most performant Flutter app possible:
👉 Controlling build() cost
👉 Apply effects only when needed
👉 Render grids and lists lazily
👉 Build and display frames in 16ms
docs.flutter.dev
Performance
Evaluating the performance of your app from several angles.
#states #architecture #bloc #video
Flutter State Management - The Grand Tour
This video will help you to take a tour of almost all state management techniques in Flutter. You may watch full lesson or use our timecodes:
👉 StatefulWidget – 1:25
👉 StatefulBuilder – 2:43
👉 InheritedWidget – 4:16
👉 RxDart + BehaviorSubject – 6:12
👉 BLoC – 8:50
👉 Redux – 11:34
👉 Mobx – 11:57
👉 Scoped Model – 12:27
👉 Flutter Hooks – 12:58
👉 Firebase – 13:22
Flutter State Management - The Grand Tour
This video will help you to take a tour of almost all state management techniques in Flutter. You may watch full lesson or use our timecodes:
👉 StatefulWidget – 1:25
👉 StatefulBuilder – 2:43
👉 InheritedWidget – 4:16
👉 RxDart + BehaviorSubject – 6:12
👉 BLoC – 8:50
👉 Redux – 11:34
👉 Mobx – 11:57
👉 Scoped Model – 12:27
👉 Flutter Hooks – 12:58
👉 Firebase – 13:22
YouTube
Flutter State Management - The Grand Tour
Take a tour of ten awesome state management techniques in Flutter. Learn how to control the flow of data when building complex large-scale mobile apps with RxDart, BLoC, and more https://fireship.io/lessons/flutter-state-management-guide/
1. StatefulWidget…
1. StatefulWidget…
#ui #scaling #screens
Flutter — Effectively scale UI according to different screen sizes
Since we have full control on all the pixels in Flutter, we might implement our own UI scaling approach. So, all objects will be scaled based on screen density and size.
Flutter — Effectively scale UI according to different screen sizes
Since we have full control on all the pixels in Flutter, we might implement our own UI scaling approach. So, all objects will be scaled based on screen density and size.
Medium
Flutter — Effectively scale UI according to different screen sizes
What is Flutter?
#performance #bestpractices #advanced
Building performant Flutter widgets
This article is a part of series developed after the Flutter Material team worked on making the Flutter Gallery app more performant on the web. Some pro tips:
👉 Only build when necessary
👉 Only build what is necessary
👉 Check widget build counts
Building performant Flutter widgets
This article is a part of series developed after the Flutter Material team worked on making the Flutter Gallery app more performant on the web. Some pro tips:
👉 Only build when necessary
👉 Only build what is necessary
👉 Check widget build counts
Medium
Building performant Flutter widgets
This article is part of a series developed after the Flutter Material team worked on making the Flutter Gallery app more performant on the…
#dart #nullsafety #preview
Dart sound null safety: technical preview 2
Null safety is a major new productivity feature that helps you avoid null exceptions, a class of bugs that are often hard to spot. As an added bonus, this feature also enables a range of performance improvements. Dart Team announces a second tech preview of sound null safety, including support for the Flutter framework:
The article is:
👉 Why null safety?
👉 Null safety principles
👉 The null safety roadmap
Dart sound null safety: technical preview 2
Null safety is a major new productivity feature that helps you avoid null exceptions, a class of bugs that are often hard to spot. As an added bonus, this feature also enables a range of performance improvements. Dart Team announces a second tech preview of sound null safety, including support for the Flutter framework:
The article is:
👉 Why null safety?
👉 Null safety principles
👉 The null safety roadmap
Medium
Dart sound null safety: technical preview 2
Announcing null-safe support for the Flutter framework
#plugins #packages
Announcing: Flutter Community Plus Plugins
Flutter Community delighted to introduce their initial release of Plus plugins, with extensive support for most platforms. This builds on the foundation set by the Flutter Team's plugins to enable Flutter developers to build their apps for different platforms out of the box:
Plus Plugins have 3 main goals:
👉 Supporting Federated plugins
👉 Supporting and maintaining all platforms
👉 Updating to plus plugins with minimal effort
Announcing: Flutter Community Plus Plugins
Flutter Community delighted to introduce their initial release of Plus plugins, with extensive support for most platforms. This builds on the foundation set by the Flutter Team's plugins to enable Flutter developers to build their apps for different platforms out of the box:
Plus Plugins have 3 main goals:
👉 Supporting Federated plugins
👉 Supporting and maintaining all platforms
👉 Updating to plus plugins with minimal effort
Medium
Announcing: Flutter Community Plus Plugins📣
The Plus Plugins are a suite of open-source Flutter plugins that take some of the most common existing packages to the next level!
#package #animation
Animations: package of the week
This package contains pre-canned animations for commonly-desired effects. The animations can be customized with your content and dropped into your application to delight your users.
Animations: package of the week
This package contains pre-canned animations for commonly-desired effects. The animations can be customized with your content and dropped into your application to delight your users.
YouTube
Animations (Flutter Package of the Week)
Flutter lets you customize animations down to the frame, but sometimes what you really want is great default animations to upgrade your app’s quality without much hassle. Learn how the animations package, provided by the Material Design team, lets you create…
#news #flutter2
What’s New in Flutter 2
After more than two years since the Flutter 1.0, Flutter Dev Team is pleased to announce the release of Flutter 2. Shortly, what's new:
👉 Web support has transitioned from beta to the stable
👉 Flutter 2 contains Dart 2.12 with Null Safety
👉 Flutter desktop has moved to Beta (stable channel)
👉 Google Mobile Ads SDK is available for Beta
👉 Flutter has gotten new iOS features
👉 Autocomplete and ScaffoldMessenger widgets
👉 Some improvements in Dart CLI, DevTools, IDEs extensions
What’s New in Flutter 2
After more than two years since the Flutter 1.0, Flutter Dev Team is pleased to announce the release of Flutter 2. Shortly, what's new:
👉 Web support has transitioned from beta to the stable
👉 Flutter 2 contains Dart 2.12 with Null Safety
👉 Flutter desktop has moved to Beta (stable channel)
👉 Google Mobile Ads SDK is available for Beta
👉 Flutter has gotten new iOS features
👉 Autocomplete and ScaffoldMessenger widgets
👉 Some improvements in Dart CLI, DevTools, IDEs extensions
Medium
What’s New in Flutter 2.0
Flutter web and Null Safety move to stable, Flutter desktop moves to beta and so much more!
#layouts #constraints
Understanding constraints
The most comprehensive guide about dealing with constraints, positioning and sizing in Flutter.
Understanding constraints
The most comprehensive guide about dealing with constraints, positioning and sizing in Flutter.
docs.flutter.dev
Understanding constraints
Flutter's model for widget constraints, sizing, positioning, and how they interact.
#googleio #conference
Flutter at Google I/O 2021
Don't forget to watch Google IO, expecially Flutter section 😉
Flutter at Google I/O 2021
Don't forget to watch Google IO, expecially Flutter section 😉
YouTube
Flutter at Google I/O 2021 - YouTube
#news #flutter2
What’s new in Flutter 2.2
The Flutter 2.2 release focuses on polish and optimization, including iOS performance improvements, Android deferred components, updated service worker for Flutter web and more. The main headlines:
👉 Aliases for types as well as for functions
👉 DevTools now supports the layout explorer for Flutter web
👉 Improvements in page transitions and incremental installs for iOS
👉 Comprehensive guide for building adaptive apps is now available
👉 Lots of desktop related enhancements (cursors, text editing, scrolling)
And last but not least: by now Play Store has more than 200K Flutter apps 🥳
What’s new in Flutter 2.2
The Flutter 2.2 release focuses on polish and optimization, including iOS performance improvements, Android deferred components, updated service worker for Flutter web and more. The main headlines:
👉 Aliases for types as well as for functions
👉 DevTools now supports the layout explorer for Flutter web
👉 Improvements in page transitions and incremental installs for iOS
👉 Comprehensive guide for building adaptive apps is now available
👉 Lots of desktop related enhancements (cursors, text editing, scrolling)
And last but not least: by now Play Store has more than 200K Flutter apps 🥳
Medium
What’s new in Flutter 2.2
The Flutter 2.2 release focuses on polish and optimization, including iOS performance improvements, Android deferred components, updated…
#dart2 #nullsafety
Understanding null safety
Null safety is the largest change in Dart 2.12 (default Dart version since Flutter 2). Now all Flutter Developers have to clearly understand null safety and be able to work with it. That's why Dart team prepared this comprehensive article you need to read.
Understanding null safety
Null safety is the largest change in Dart 2.12 (default Dart version since Flutter 2). Now all Flutter Developers have to clearly understand null safety and be able to work with it. That's why Dart team prepared this comprehensive article you need to read.
dart.dev
Understanding null safety
A deep dive into Dart language and library changes related to null safety.
#adaptive #responsive #desktop #web
Building adaptive apps
One of the first things you must consider when bringing your app to multiple platforms is how to adapt it to the various sizes and shapes of the screens that it will run on.
The article headlines:
👉 Layout widgets
👉 Visual density
👉 Contextual layout
👉 Device segmentation
👉 Single source of truth for styling
👉 Input and keyboard accelerators
👉 Mouse enter, exit, and hover
👉 Common idioms and norms to consider
Building adaptive apps
One of the first things you must consider when bringing your app to multiple platforms is how to adapt it to the various sizes and shapes of the screens that it will run on.
The article headlines:
👉 Layout widgets
👉 Visual density
👉 Contextual layout
👉 Device segmentation
👉 Single source of truth for styling
👉 Input and keyboard accelerators
👉 Mouse enter, exit, and hover
👉 Common idioms and norms to consider
docs.flutter.dev
Building adaptive apps
Some considerations and instructions on how to build adaptive apps to run on a variety of platforms.
#ffi #integration
Foreign Function Interface 🔥
For C-based APIs, including those that can be generated for code written in modern languages like Rust or Go, Dart provides a direct mechanism for binding to native code using the dart:ffi library.
The foreign function interface (FFI) model can be considerably faster than platform channels, because no serialization is required to pass data. Instead, the Dart runtime provides the ability to allocate memory on the heap that is backed by a Dart object and make calls to statically or dynamically linked libraries. FFI is available for all platforms other than web, where the js pachage serves an equivalent purpose.
To use FFI, you create a typedef for each of the Dart and unmanaged method signatures, and instruct the Dart VM to map between them. As a simple example, here’s a fragment of code to call the traditional Win32 MessageBox() API:
Foreign Function Interface 🔥
For C-based APIs, including those that can be generated for code written in modern languages like Rust or Go, Dart provides a direct mechanism for binding to native code using the dart:ffi library.
The foreign function interface (FFI) model can be considerably faster than platform channels, because no serialization is required to pass data. Instead, the Dart runtime provides the ability to allocate memory on the heap that is backed by a Dart object and make calls to statically or dynamically linked libraries. FFI is available for all platforms other than web, where the js pachage serves an equivalent purpose.
To use FFI, you create a typedef for each of the Dart and unmanaged method signatures, and instruct the Dart VM to map between them. As a simple example, here’s a fragment of code to call the traditional Win32 MessageBox() API:
#threading #asynchronous
Exploring Threading In Flutter
Threading in Flutter?! But they say it's single-threaded! Yes and no. Advanced Flutter Developers should know about the Embedder Protocol, that forces all embedders to have 4 threads:
👉 UI Runner
👉 GPU Runner
👉 IO Runner
👉 Platform Runner
Exploring Threading In Flutter
Threading in Flutter?! But they say it's single-threaded! Yes and no. Advanced Flutter Developers should know about the Embedder Protocol, that forces all embedders to have 4 threads:
👉 UI Runner
👉 GPU Runner
👉 IO Runner
👉 Platform Runner
#immutable #patterns
Immutable Data Patterns in Dart and Flutter
Immutable data constructs are those that cannot be mutated (altered) after they've been initialized. There are a number of advantages to using immutable data: thread safety, pass safety, project simplicity. But how to implement immutability in Dart?
The article headlines:
👉 Final variables vs. constants
👉 Immutable data in Flutter
👉 Creating your own immutable data classes
👉 Updating immutable data
Immutable Data Patterns in Dart and Flutter
Immutable data constructs are those that cannot be mutated (altered) after they've been initialized. There are a number of advantages to using immutable data: thread safety, pass safety, project simplicity. But how to implement immutability in Dart?
The article headlines:
👉 Final variables vs. constants
👉 Immutable data in Flutter
👉 Creating your own immutable data classes
👉 Updating immutable data
Dart Academy
Immutable Data Patterns in Dart and Flutter
Immutable data constructs are those that cannot be mutated (altered) after they've been initialized. The Dart language is full of these. In fact, most basic variable types operate this way. Once created, strings, numbers, and boolean values cannot be mutated.…
#wtfshow #youtube #podcast
🔥 Обсуждаем новшества Flutter 2.0 | WTF Show #1
WTF Show – это формат, в котором мы обсуждаем все, что связано с миром Flutter, делимся накопленными знаниями и опытом, стараемся сделать так, чтобы как можно больше людей узнало о данной технологии.
❗️Это наш пилотный выпуск, поэтому не судите строго. Обещаем, что с каждым разом качество контента будет только расти 😉
🔥 Обсуждаем новшества Flutter 2.0 | WTF Show #1
WTF Show – это формат, в котором мы обсуждаем все, что связано с миром Flutter, делимся накопленными знаниями и опытом, стараемся сделать так, чтобы как можно больше людей узнало о данной технологии.
❗️Это наш пилотный выпуск, поэтому не судите строго. Обещаем, что с каждым разом качество контента будет только расти 😉
YouTube
Обсуждаем новшества Flutter 2.0 | WTF Show #1
Мы компания What the Flutter. Занимаемся разработкой мобильных приложений, профессионально применяя Flutter в продакшене. Являемся экспертами в данной индустрии, активно контрибьютим в комьюнити.
WTF Show – это формат, в котором мы обсуждаем все, что связано…
WTF Show – это формат, в котором мы обсуждаем все, что связано…
#interview #wtfinterview
🔥 Собеседование Middle Flutter-разработчика | WTF Interview #1
WTF Interview – это формат, в котором мы приглашаем Flutter-разработчиков различного уровня пройти онлайн-собеседование по Flutter и проверяем, действительно ли наши гости соответствуют заявленному грейду.
Не жалейте лайков ❤️
🔥 Собеседование Middle Flutter-разработчика | WTF Interview #1
WTF Interview – это формат, в котором мы приглашаем Flutter-разработчиков различного уровня пройти онлайн-собеседование по Flutter и проверяем, действительно ли наши гости соответствуют заявленному грейду.
Не жалейте лайков ❤️
YouTube
Flutter Interview of a MIDDLE Developer with HR | What's Going On? 🤯
WTF Interview is a format in which we invite various Flutter Developers to an online interview and check whether our guests really match the declared grade.
Chapters:
0:00 Greetings
2:03 Interview Structure
2:25 What's a good way to describe Dart?
3:35 What…
Chapters:
0:00 Greetings
2:03 Interview Structure
2:25 What's a good way to describe Dart?
3:35 What…
#interview #wtfinterview
🔥 Собеседование Middle+ Flutter-разработчика | WTF Interview #2
Второй выпуск WTF Interview – формата, в котором мы приглашаем Flutter-разработчиков различного уровня пройти онлайн-собеседование по Flutter и проверяем, действительно ли наши гости соответствуют заявленному грейду.
Как всегда, не жалейте лайков и оставляйте комментарии ❤️
🔥 Собеседование Middle+ Flutter-разработчика | WTF Interview #2
Второй выпуск WTF Interview – формата, в котором мы приглашаем Flutter-разработчиков различного уровня пройти онлайн-собеседование по Flutter и проверяем, действительно ли наши гости соответствуют заявленному грейду.
Как всегда, не жалейте лайков и оставляйте комментарии ❤️
YouTube
Flutter interview of a MIDDLE+ developer | He did not expect such questions!
WTF Interview is a format in which we invite various Flutter Developers to an online interview and check whether our guests really match the declared grade.
Chapters:
0:00 Greetings
2:00 What's a good way to describe Dart?
3:37 Does Dart adapt to OOP?
5:44…
Chapters:
0:00 Greetings
2:00 What's a good way to describe Dart?
3:37 Does Dart adapt to OOP?
5:44…
Сегодня на YouTube-канале выйдет кое-что очень необычное. Надеемся, вам понравится. Следите за обновлениями 😉
#battle #wtfbattle
Взаимное собеседование по Flutter (Саша vs Глеб) | WTF Battle #1
WTF Battle – это формат, в котором мы приглашаем двух Flutter-разработчиков, чтобы они взаимно прособесили друг друга. Победитель баттла получает славу и почет – проигравший уходит ни с чем.
В первом выпуске сразятся Саша и Глеб (участники двух предыдущих серий WTF Interview). Будет жарко 🔥
Поддержите, пожалуйста, лайками и комментариями ❤️
Взаимное собеседование по Flutter (Саша vs Глеб) | WTF Battle #1
WTF Battle – это формат, в котором мы приглашаем двух Flutter-разработчиков, чтобы они взаимно прособесили друг друга. Победитель баттла получает славу и почет – проигравший уходит ни с чем.
В первом выпуске сразятся Саша и Глеб (участники двух предыдущих серий WTF Interview). Будет жарко 🔥
Поддержите, пожалуйста, лайками и комментариями ❤️
YouTube
Взаимное собеседование по Flutter (Саша vs Глеб) | WTF Battle #1
WTF Battle – это формат, в котором мы приглашаем двух Flutter-разработчиков, чтобы они взаимно прособесили друг друга. Победитель баттла получает славу и почет – проигравший уходит ни с чем.
Тайм-коды:
0:00 Знакомство с форматом и участниками
4:58 Саша:…
Тайм-коды:
0:00 Знакомство с форматом и участниками
4:58 Саша:…