V8
Flutter
V8 | Flutter | |
---|---|---|
58 | 1,239 | |
23,506 | 166,743 | |
0.6% | 0.4% | |
10.0 | 10.0 | |
2 days ago | 3 days ago | |
C++ | Dart | |
GNU General Public License v3.0 or later | BSD 3-clause "New" or "Revised" License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
V8
- Show HN: V8serialize – Read/write V8-serialized JavaScript values from Python
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JavaScript Dates Are About to Be Fixed
Thank god!
Presumably this new API will fix the fact that JS does in fact know about some time zones, but not most.
Shield your eyes from this monstrosity that will successfully parse some dates using `new Date()` in some select special time zones, but assume UTC in the other cases:
https://github.com/v8/v8/blob/781c20568240a1e59edcf0cb5d713a...
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The Renaissance of Meteor.js
And that happened in 2021.
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Boehm Garbage Collector
https://chromium.googlesource.com/v8/v8.git/+/HEAD/include/c...
Due to the nature of web engine workloads migrating objects to being GC'd isn't performance negative (as most people would expect). With care it can often end up performance positive.
There are a few tricks that Oilpan can apply. Concurrent tracing helps a lot (e.g. instead of incrementing/decrementing refs, you can trace on a different thread), in addition when destructing objects, the destructors typically become trivial meaning the object can just be dropped from memory. Both these free up main thread time. (The tradeoff with concurrent tracing is that you need atomic barriers when assigning pointers which needs care).
This is on top of the safey improvements you gain from being GC'd vs. smart pointers, etc.
One major tradeoff that UAF bugs become more difficult to fix, as you are just accessing objects which "should" be dead.
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The Everything NPM Package
> If that standard library would be written in JS, a new browser (or rather a new JS engine being a part of the browser) could just use some existing implementation
That sounds great, but I'm doubtful of the simplicity behind this approach.
If my understanding is correct, v8 has transitioned to C++[0] and Torque[1] code to implement the standard library, as opposed to running hard-coded JavaScript on setting up a new context.
I suspect this decision was made as a performance optimization, as there would obviously be a non-zero cost to parsing arbitrary JavaScript. Therefore, I doubt a JavaScript-based standard library would be an acceptable solution here.
[0]: https://github.com/v8/v8/tree/main/src/runtime
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C++23: Removing garbage collection support
C++ lets you write anything you can imagine, and the language features and standard library often facilitate that. The committee espouses the view that they want to provide many "zero [runtime] cost," abstractions. Anybody can contribute to the language, although the committee process is often slow and can be political, each release the surface area and capability of the language gets larger.
I believe Hazard Pointers are slated for C++26, and these will add a form "free later, but not quite garbage collection" to the language. There was a talk this year about using hazard pointers to implement a much faster std::shared_ptr.
It's a language with incredible depth because so many different paradigms have been implemented in it, but also has many pitfalls for new and old users because there are many different ways of solving the same problem.
I feel that in C++, more than any other language, you need to know the actual implementation under the hood to use it effectively. This means knowing not just what the language specifies, but can occaissionally require knowing what GCC or Clang generate on your particular hardware.
Many garbage collected languages are written in or have parts of their implementations in C++. See JS (https://github.com/v8/v8)and Java GC (https://github.com/openjdk/jdk/tree/36de19d4622e38b6c00644b0...)
I am not an expert on Java (or C++), so if someone knows better or can add more please correct me.
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Abstract Syntax Trees and Practical Applications in JavaScript
Remember that we earlier established that every source gets parsed into an AST at some point before it gets compiled or interpreted. For example, platforms like Nodejs and chromium-based browsers use Gooogle's V8 engine behind the scenes to run JavaScript and of course, some AST parsing is always involved before the interpreter kicks in. I looked V8's source and I discovered it uses its own internal parser to achieve this.
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Notes: Advanced Node.js Concepts by Stephen Grider
In the source code of the Node.js opensource project, lib folder contains JavaScript code, mostly wrappers over C++ and function definitions. On the contrary, src folder contains C++ implementations of the functions, which pulls dependencies from the V8 project, the libuv project, the zlib project, the llhttp project, and many more - which are all placed at the deps folder.
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What does the code look like for built-in functions?
Here is the implementation of of Array. prototype.map in V8. It's written in a language called Torque which appears to be a special language just for the v8 engine.
- What's happening with JavaScript Array References under the hood?
Flutter
- Uno Platform Studio: GUI Designer for Cross-Platform .NET Applications
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Build a Youtube Clone with Strapi and Flutter: Part 3
In Part 3, we'll learn how to build the frontend with Flutter and consume the APIs to implement a functional YouTube clone application. Before we move futher, let's look at the folder structure for the Flutter app we'll be building:
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We're forking Flutter. This is why
There's likely things we missed but we'd love to find examples you might have. We try to be scientific as much as we can https://github.com/flutter/flutter/pull/122275 [coincidentally a community contribution from someone who didn't have to fork :)]
Disclaimer: used to work on some of these animations
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Should JavaScript be split into two languages? Google proposal divides opinion
> I'd rather we just move to native cross platform applications and stop using a document browser to build interactive applications
Here you go. Do both native and wasm:
https://avaloniaui.net/
https://platform.uno/
https://flutter.dev/
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Android Studio Ladybug broke my build.
If JAVA_HOME isn't defined, Flutter looks for any java executable in your path. Once issue 122609 lands, the flutter doctor command reports which version of Java is used
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Build a Youtube Clone with Strapi and Flutter: Part 1
Flutter SDK installed.
- Why I'm skeptical of rewriting JavaScript tools in "faster" languages
- Rust needs a web framework for lazy developers
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Install Flutter on macOS Apple Silicon
Btw, if using Android Studio preview, Flutter won’t be able to capture version numbers. That’s normal. (See https://github.com/flutter/flutter/issues/140575)
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Flutter’s Engineering Pipeline: A Great Workflow with Minor Hiccups
Flutter gained a stronghold in the market with its ability to build beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase. Many top companies such as BMW, Alibaba, and Google use Flutter for their flagship apps. And it's not just the big players; developers love it too, with over 1,416 contributors and nearly 165k stars on GitHub.
What are some alternatives?
Duktape - Duktape - embeddable Javascript engine with a focus on portability and compact footprint
Introducing .NET Multi-platform App UI (MAUI) - .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
ChakraCore - ChakraCore is an open source Javascript engine with a C API. [Moved to: https://github.com/chakra-core/ChakraCore]
flet - Flet enables developers to easily build realtime web, mobile and desktop apps in Python. No frontend experience required.
Lua - Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.
WPF - WPF is a .NET Core UI framework for building Windows desktop applications.
V7 - Embedded JavaScript engine for C/C++
Uno Platform - Open-source platform for building cross-platform native Mobile, Web, Desktop and Embedded apps quickly. Create rich, C#/XAML, single-codebase apps from any IDE. Hot Reload included! 90m+ NuGet Downloads!!
ChaiScript - Embedded Scripting Language Designed for C++
kivy - Open source UI framework written in Python, running on Windows, Linux, macOS, Android and iOS
Cython - The most widely used Python to C compiler
Quasar Framework - Quasar Framework - Build high-performance VueJS user interfaces in record time