Running Rust in the Browser with Web Assembly

I’ve recently been working on a Rust course for the Qvault app. In order to write a more engaging course, I want students to be able to write and execute code right in the browser. As I’ve learned from my previous posts on this topic, the easiest way to sandbox code execution on a server is to not execute code on a server. Enter Web Assembly, stage left.

For those of you who don’t care about how it works, and just want to give it a try, checkout the demo: Rust WASM Playground.

How It Works

The architecture is fairly simple:

  • User writes code in the browser
  • Browser sends code to server
  • Server adds some glue and compiles code to WASM
  • Server sends WASM bytes or compiler errors back to browser
  • Browser runs WASM and displays console output, or shows compiler errors

Writing code and shipping it to the server hopefully needs no explanation, it’s a simple text editor coupled with the fetch API. The first interesting thing we do is compile the code on the server.

Compiling the Code

Qvault’s server is written in Go. I have a simple HTTP handler with the following signature:

func (cfg config) compileRustHandler(w http.ResponseWriter, r *http.Request)

At the start of the function we unmarshal the code which was provided in a JSON body:

type parameters struct {
	Code string
}

decoder := json.NewDecoder(r.Body)
params := parameters{}
err := decoder.Decode(&params)
if err != nil {
	respondWithError(w, 500, "Couldn't decode parameters")
	return
}

Next, we create a temporary folder on disk that we’ll use as a “scratch pad” to create a Rust project.

usr, err := user.Current()
if err != nil {
	respondWithError(w, 500, "Couldn't get system user")
	return
}
workingDir := filepath.Join(usr.HomeDir, ".wasm", uuid.New().String())
err = os.MkdirAll(workingDir, os.ModePerm)
if err != nil {
	respondWithError(w, 500, "Couldn't create directory for compilation")
	return
}
defer func() {
	err = os.RemoveAll(workingDir)
	if err != nil {
		respondWithError(w, 500, "Couldn't clean up code from compilation")
		return
	}
}()

As you can see, we create the project under the .wasm/uuid path in the home directory. We also defer an os.RemoveAll function that will delete this folder when we are doing handling this request.

#golang #languages #rust #wasm #rust #rustlang #wasm #web assembly

What is GEEK

Buddha Community

Running Rust in the Browser with Web Assembly

Running Rust in the Browser with Web Assembly

I’ve recently been working on a Rust course for the Qvault app. In order to write a more engaging course, I want students to be able to write and execute code right in the browser. As I’ve learned from my previous posts on this topic, the easiest way to sandbox code execution on a server is to not execute code on a server. Enter Web Assembly, stage left.

For those of you who don’t care about how it works, and just want to give it a try, checkout the demo: Rust WASM Playground.

How It Works

The architecture is fairly simple:

  • User writes code in the browser
  • Browser sends code to server
  • Server adds some glue and compiles code to WASM
  • Server sends WASM bytes or compiler errors back to browser
  • Browser runs WASM and displays console output, or shows compiler errors

Writing code and shipping it to the server hopefully needs no explanation, it’s a simple text editor coupled with the fetch API. The first interesting thing we do is compile the code on the server.

Compiling the Code

Qvault’s server is written in Go. I have a simple HTTP handler with the following signature:

func (cfg config) compileRustHandler(w http.ResponseWriter, r *http.Request)

At the start of the function we unmarshal the code which was provided in a JSON body:

type parameters struct {
	Code string
}

decoder := json.NewDecoder(r.Body)
params := parameters{}
err := decoder.Decode(&params)
if err != nil {
	respondWithError(w, 500, "Couldn't decode parameters")
	return
}

Next, we create a temporary folder on disk that we’ll use as a “scratch pad” to create a Rust project.

usr, err := user.Current()
if err != nil {
	respondWithError(w, 500, "Couldn't get system user")
	return
}
workingDir := filepath.Join(usr.HomeDir, ".wasm", uuid.New().String())
err = os.MkdirAll(workingDir, os.ModePerm)
if err != nil {
	respondWithError(w, 500, "Couldn't create directory for compilation")
	return
}
defer func() {
	err = os.RemoveAll(workingDir)
	if err != nil {
		respondWithError(w, 500, "Couldn't clean up code from compilation")
		return
	}
}()

As you can see, we create the project under the .wasm/uuid path in the home directory. We also defer an os.RemoveAll function that will delete this folder when we are doing handling this request.

#golang #languages #rust #wasm #rust #rustlang #wasm #web assembly

Ashish parmar

Ashish parmar

1627043546

Evolution in Web Design: A Case Study of 25 Years - Prismetric

The term web design simply encompasses a design process related to the front-end design of website that includes writing mark-up. Creative web design has a considerable impact on your perceived business credibility and quality. It taps onto the broader scopes of web development services.

Web designing is identified as a critical factor for the success of websites and eCommerce. The internet has completely changed the way businesses and brands operate. Web design and web development go hand-in-hand and the need for a professional web design and development company, offering a blend of creative designs and user-centric elements at an affordable rate, is growing at a significant rate.

In this blog, we have focused on the different areas of designing a website that covers all the trends, tools, and techniques coming up with time.

Web design
In 2020 itself, the number of smartphone users across the globe stands at 6.95 billion, with experts suggesting a high rise of 17.75 billion by 2024. On the other hand, the percentage of Gen Z web and internet users worldwide is up to 98%. This is not just a huge market but a ginormous one to boost your business and grow your presence online.

Web Design History
At a huge particle physics laboratory, CERN in Switzerland, the son of computer scientist Barner Lee published the first-ever website on August 6, 1991. He is not only the first web designer but also the creator of HTML (HyperText Markup Language). The worldwide web persisted and after two years, the world’s first search engine was born. This was just the beginning.

Evolution of Web Design over the years
With the release of the Internet web browser and Windows 95 in 1995, most trading companies at that time saw innumerable possibilities of instant worldwide information and public sharing of websites to increase their sales. This led to the prospect of eCommerce and worldwide group communications.

The next few years saw a soaring launch of the now-so-famous websites such as Yahoo, Amazon, eBay, Google, and substantially more. In 2004, by the time Facebook was launched, there were more than 50 million websites online.

Then came the era of Google, the ruler of all search engines introducing us to search engine optimization (SEO) and businesses sought their ways to improve their ranks. The world turned more towards mobile web experiences and responsive mobile-friendly web designs became requisite.

Let’s take a deep look at the evolution of illustrious brands to have a profound understanding of web design.

Here is a retrospection of a few widely acclaimed brands over the years.

Netflix
From a simple idea of renting DVDs online to a multi-billion-dollar business, saying that Netflix has come a long way is an understatement. A company that has sent shockwaves across Hollywood in the form of content delivery. Abundantly, Netflix (NFLX) is responsible for the rise in streaming services across 190 countries and meaningful changes in the entertainment industry.

1997-2000

The idea of Netflix was born when Reed Hastings and Marc Randolph decided to rent DVDs by mail. With 925 titles and a pay-per-rental model, Netflix.com debuts the first DVD rental and sales site with all novel features. It offered unlimited rentals without due dates or monthly rental limitations with a personalized movie recommendation system.

Netflix 1997-2000

2001-2005

Announcing its initial public offering (IPO) under the NASDAQ ticker NFLX, Netflix reached over 1 million subscribers in the United States by introducing a profile feature in their influential website design along with a free trial allowing members to create lists and rate their favorite movies. The user experience was quite engaging with the categorization of content, recommendations based on history, search engine, and a queue of movies to watch.

Netflix 2001-2005 -2003

2006-2010

They then unleashed streaming and partnering with electronic brands such as blu-ray, Xbox, and set-top boxes so that users can watch series and films straight away. Later in 2010, they also launched their sophisticated website on mobile devices with its iconic red and black themed background.

Netflix 2006-2010 -2007

2011-2015

In 2013, an eye-tracking test revealed that the users didn’t focus on the details of the movie or show in the existing interface and were perplexed with the flow of information. Hence, the professional web designers simply shifted the text from the right side to the top of the screen. With Daredevil, an audio description feature was also launched for the visually impaired ones.

Netflix 2011-2015

2016-2020

These years, Netflix came with a plethora of new features for their modern website design such as AutoPay, snippets of trailers, recommendations categorized by genre, percentage based on user experience, upcoming shows, top 10 lists, etc. These web application features yielded better results in visual hierarchy and flow of information across the website.

Netflix 2016-2020

2021

With a sleek logo in their iconic red N, timeless black background with a ‘Watch anywhere, Cancel anytime’ the color, the combination, the statement, and the leading ott platform for top video streaming service Netflix has overgrown into a revolutionary lifestyle of Netflix and Chill.

Netflix 2021

Contunue to read: Evolution in Web Design: A Case Study of 25 Years

#web #web-design #web-design-development #web-design-case-study #web-design-history #web-development

Ron  Cartwright

Ron Cartwright

1602644400

New Browser from CCleaner: Hot Or Not?

If you are thinking of browsing the Internet privately and securely on your Windows computer then its time you rethink about your web browser.

Do you think incognito mode really helps you?

It does, but up to a certain level only. Moreover, what about your Autofill data?

Don’t you think that’s getting compromised by dangerous malware attacks?

If you are tired of all these issues and need a single solution then I present you a safe and secure browser, called CCleaner. There are some other programs better than ccleaner for PC cleaning but let’s take a look on its browser.

In this article I am going to go over the complete CCleaner browser review. It is one of the best browser cleaner for windows 10 with multiple advanced features.

CCleaner Browser Review

Piriform has released the CCleaner browser which is a Chromium-based web browser. Since, Chromium is open source.

It is very similar to how Google Chrome looks like which is also a Chromium based web browser.

Note: At the time of writing this article, the application is only available for Windows 7, 8, 8.1 and 10.

Browser Installation

For completing this web browser’s review, we will start from the installation part.

You will need to go to official website and download ccleaner browser. After downloading the setup file, run it and you should see the installation setup window.

#browsers #web-browser #review #internet #google #google-chrome #ad-blocking #web-browsers

prashant patil

1598286700

whatsapp web-w app web-webs whatsapp »

Through whatsapp web you can easily run whatsapp on your android pc on your android mobile. Just like whatsapp mobile is for android device, whatsapp web is for windows device. Whatsapp web is quite popular which has quite cool features.

whatsapp web

how to use whatsapp web desktop
Whatsapp web is very easy to use. Simply you have to search web.whatsapp.com in your google chrome and click on first result which is the official website of whatsapp web.

As soon as you click, an interface will open in front of you, on which you will see a barcode. Follow the steps given below to use whatsapp web on your desktop

web.whatsapp.com

open your whatsapp on your mobile
You will see 3dots on the right side top inside whatsapp, you have to click
The 3rd option is whatsapp web, you have to click it
Now you have to capture the barcode you see on your desktop through your phone.
Now you can use whatsapp of your android mobile in your desktop
webs whatsapp

note: You can see whatsapp of anyone’s mobile by pointing to the barcode of your desktop. You can also call it whatsapp hack.

Remember that after using whatsapp web, logout it from your desktop. To logout follow the steps given below.

w app web

open your whatsapp on your mobile
You will see 3dots on the right side top inside whatsapp, you have to click
The 3rd option is whatsapp web, you have to click it
You will see the symbol for logout, you have to logout by clicking it.

read more

#whatsapp #whatappweb #https://web.whatsapp.com/ #wsp web #web.whatsapp web #web whatsapp

Ananya Gupta

1613386017

Key Points For Joining The Best Web Designing For Better Career Option

The scope of the web designer is increasing day by day, because of high demanding job forms an important part of our society. Web Designing is that the creation and planning of internet sites. it’s a process of developing different sites.

To be an honest web designer you ought to have an entire knowledge of CSS and HTML. These are the important prerequisite for designing an internet site. In today’s world of competition to be amongst at the highest one needs media. Websites are playing a key role in today’s life. Whether in online web desiging course mention shopping or engineering everything is formed online.

These are some of the main benefits which a standard person has made with the utilization of internet sites. many roles are available for web designers than before. Many big companies demand experienced and quality web designers.

Web designing is the creative and innovative part of web development during which the designer is especially concerned with how our website looks. CSS is the heart of the web designing part.

The scope of web designing is increasing day by day. In today’s web and internet world, people want a creative website once they want to access it. Top company web development of India hands over 8-10 lac per annum for an experienced web designer. So it’s a really good field for creating websites.

Web designers have the work of designing whole websites which forms the primary step of web development. After web designing remaining work will start. In today’s growing scenario there are many job opportunities for fresher and experienced candidates.

Web designing is a crucial course that features a lot of scope within the present and also in the future scenario. There are two ways to travel through this course. If you’re curious about taking over a full-time web designer course then we will make a career in media or as advertising agents.

If one is curious about Engineering or in Commerce course but getting to develop the skill in web designing, then you’ll prefer the part-time short course in web designing.

When it comes to selecting a training institute, you will find them in every corner. CETPA Infotech is a reputed training institution and provides training that is industry oriented, updated, innovative and summer training has become a pioneer during this online designing field.

#web designing training in noida #web designing training in delhi #web designing online training #web designing online course #web designing course #web designing training