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From Javascript Callbacks to Promises to Generators and Coroutines
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cscrunch.com
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9 years ago
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eng
JavaScript has always been a powerful language, but it is not always pretty to look at. ES6 has also greatly improved the syntax of the language, and although it's not perfect, it's not that bad, either. Some of JavaScript's limitations are also its strengths, which is what we will see when we examine the JavaScript coroutine pattern. Javascript is single-threaded. It is also event-driven, so that many of its functions use a callback p....
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Today marks the 25th anniversary of the Linux operating system! More specifically, it marks the day that Linus Torvalds announced his new operating system (that was later called Linux) in a newsgroup post: From:torvalds@klaava.Helsinki.FI (Linus Benedict Torvalds) Newsgroup: comp.os.minix Subject: What would you like to see most in minix? Summary: small poll for my new operating system Message-ID: 1991Aug25, 20578.9541@klaava.Helsinki.FI....
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Today marks the 25th anniversary of the Linux operating system! More specifically, it marks the day that Linus Torvalds announced his new operating system (that was later called Linux) in a newsgroup post: From:torvalds@klaava.Helsinki.FI (Linus Benedict Torvalds) Newsgroup: comp.os.minix Subject: What would you like to see most in minix? Summary: small poll for my new operating system Message-ID: 1991Aug25, 20578.9541@klaava.Helsinki.FI....
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Recently, I spoke about securing Web Applications at JSChannel Conference ’16. The conference venue was The Ritz-Carlton, Bangalore…
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A very quick blog today. I have released searchcode server under the fair source licence . This means that as of a few days ago you can view the source, change it modify it and run it as you see fit so long as you have less than 5 users. The source is hosted on github (I may move this to GitLab sometime in the future) and you can view it here . So what does this mean? Well the community edition still exists (run searchcode with as m..
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I was recently working on some code in which I wanted to use Promises, but all that I had was callback-centric code. In the past, I have imported libraries such as bluebird for this particular problem, but now that seems like a bit of overkill to get just one function. I'm already using ES6, so I don't need a polyfill in order to use Promises; all that I want is a simple promisify() function. Importing an entire library for one functio....
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I was recently working on some code in which I wanted to use Promises, but all that I had was callback-centric code. In the past, I have imported libraries such as bluebird for this particular problem, but now that seems like a bit of overkill to get just one function. I'm already using ES6, so I don't need a polyfill in order to use Promises; all that I want is a simple promisify() function. Importing an entire library for one functio....
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I was recently working on some code in which I wanted to use Promises, but all that I had was callback-centric code. In the past, I have imported libraries such as bluebird for this particular problem, but now that seems like a bit of overkill to get just one function. I'm already using ES6, so I don't need a polyfill in order to use Promises; all that I want is a simple promisify() function. Importing an entire library for one functio....
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A discussion for JS developers about how to have some fun with the useful ECMAScript 2015 "Proxy" feature, which enables you to create a proxy for another object.
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Taken from a comment I posted on HN in a thread about a Soccer Con Man . Not actually a programmer. The guy was hired to be a project manager. After joining things were as expected but after a few weeks we noticed that he was rarely around after lunch and never around after lunch on a Friday. We would email him at those times deliberately to catch him out and I recall starting to put sticky notes on his laptop “Came to see you a X ti..
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Steven Pressfield has really coined the term *resistance in his famous book The War of Art amongts some other books he dedicated to it, and his words are so accurate that it is a must read for everyone in the business of making shit happen. TL;DR The resistance is a phenomenon well known to creative people, entrepreneurs and anybody trying to make something different and/or new happen – to some extent it is like a force of nature that manif..
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On August 6, 1991, Tim Berners-Lee created a post detailing his World Wide Web project on a newsgroup called alt.hypertext in order to entice others to collaborate with him and create and host Web pages for the World Wide Web. However, it wasn’t until August 23, 1991 that it was made publicly accessible for the world to see. You could argue that August 6 is the real birth of the World Wide Web, but most websites and news aggregators ackno..
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On August 6, 1991, Tim Berners-Lee created a post detailing his World Wide Web project on a newsgroup called alt.hypertext in order to entice others to collaborate with him and create and host Web pages for the World Wide Web. However, it wasn’t until August 23, 1991 that it was made publicly accessible for the world to see. You could argue that August 6 is the real birth of the World Wide Web, but most websites and news aggregators ackno..
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Scott Belsky joins us to highlight his journey from Fortune 500 MBA grad to the creative chaos of the design world.
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Steven Pressfield has really coined the term *resistance in his famous book The War of Art amongts some other books he dedicated to it, and his words are so accurate that it is a must read for everyone in the business of making shit happen. TL;DR The resistance is a phenomenon well known to creative people, entrepreneurs and anybody trying to make something different and/or new happen – to some extent it is like a force of nature that manif..
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Drinks and deserts bring me a kick of happiness. I like the rush and excitement I get after a good Old Fashioned, and I like the content that I feel after eating a Tiramisu. For a while, I feel happier. I smile, and I forgive, and I relax. Yet, whenever I have a drink or a desert - it takes from my health. Just like the damage an avatar would sustain in a 3D shooter game, I lose a few precious percent of health. And I’m not speaking about....
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UPDATE 2017-08-31 Use chromedriver version 2.25. Tried using 2.9 with chrome 60 and could not navigate to URLS. It throws the exception below. Works fine with 2.25. WebDriverException: Message: unknown error: Runtime.executionContextCreated has invalid 'context' : { "auxData" : { "frameId" : "18604.1" , "isDefault" :true } , "id" :1, "name" : "" , "origin" : "://" } ( Session info: chrome = 60.0.3112.113 ) ( Driver..
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Staying true to my well-documented inability to write timely posts, here’s a post that I probably should have finished three months ago. I wasn’t always the truck-faring degenerate that I am now. Reading some of my earlier posts, I can vividly remember a (roughly four percent) younger, more hesitant Brandon, sitting in an airport terminal, running through the plan over and over in his head, making sure he didn’t miss any important details..
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Staying true to my well-documented inability to write timely posts, here’s a post that I probably should have finished three months ago. I wasn’t always the truck-faring degenerate that I am now. Reading some of my earlier posts, I can vividly remember a (roughly four percent) younger, more hesitant Brandon, sitting in an airport terminal, running through the plan over and over in his head, making sure he didn’t miss any important details..
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A book that aims to educate web developers and give them the confidence to abandon their jQuery crutches and walk freely with the power of the web API and JavaScript. You will learn about the most important concepts surrounding web development as I demystify jQuery!
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I was inspired last night by Cate Huston’s post, The Day I Leave the Tech Industry . I decided to write my own, except I’m not as eloquent a writer as Cate so before I go any further please, please, please read her post and not mine. Mine is going to be a bit different. Lately I’ve been thinking more and more about this. It seems imminent. I’m only 27 and let me repeat: it seems imminent. I’m going to tell you all the fantasy that play....
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Update: You can find an updated and significantly improved version of this post in my book “Pro .NET Benchmarking” . DateTime is a widely used .NET type. A lot of developers use it all the time, but not all of them really know how it works. In this post, I discuss DateTime.UtcNow : how it’s implemented, what the latency and the resolution of DateTime on Windows and Linux, how the resolution can be changed, and how it can affect your ..
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We've prioritized the resources that our users need to load and gained an impressive boost on our JavaScript application startup. In this article, I will explain how we've used Webpack, adjusted our handling of SVG icons and prioritized user needs to achieve up to 4.5 times faster startup.
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Update: You can find an updated and significantly improved version of this post in my book “Pro .NET Benchmarking” . DateTime is a widely used .NET type. A lot of developers use it all the time, but not all of them really know how it works. In this post, I discuss DateTime.UtcNow : how it’s implemented, what the latency and the resolution of DateTime on Windows and Linux, how the resolution can be changed, and how it can affect your ..
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Install homebrew Install python Install virtualenv and virtualenv wrapper pip install virtualenv pip install virtualenvwrapper Add the following to ~/.bash_profile: export WORKON_HOME =$ HOME /. virtualenvs export PROJECT_HOME = /Users/ dhruvkar /< projectdirectory > source /usr/ local /bin/ virtualenvwrapper . sh To make virutal environments for existing projects use: mkvirtualenv -a [project ..
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We've prioritized the resources that our users need to load and gained an impressive boost on our JavaScript application startup. In this article, I will explain how we've used Webpack, adjusted our handling of SVG icons and prioritized user needs to achieve up to 4.5 times faster startup.
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There are many different types of testing which exist in software engineering. They should not be confused with the test levels, unit testing, integration testing, component interface testing, and system testing. However the different test levels may be used by each type as a way of checking for software quality. The following are all different types of tests in software engineering. A/B A/B testing is testing the comparison of two ..
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We unified the site with our updated branding, and also focused on improving digitalocean.com's accessibility, organization, and performance.
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Snyk founder Guy Podjarny joins Courtney Nash on the new O’Reilly Security podcast, discussing key topics such as: - Why developers should own security, and why they haven’t done so yet - How can we bring the DevOps revolution into the world of security - What are each of our roles in improving Open Source Security - More tactically, handling vulnerabilities in open source components
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Remark : I have not had this problem in years, and it’s probably long resolved. Unless you’re using Debian, where people care about this, chances are that setting up GPG Smartcards with your Linux distribution is an adventure. There are two ways to do it, CCID and PCSCLite, the latter of which runs a background service pcscd – as root, at least on Arch, while GnuPG’s built-in CCID driver accesses the reader directly through the USB dev....
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Remark : I have not had this problem in years, and it’s probably long resolved. Unless you’re using Debian, where people care about this, chances are that setting up GPG Smartcards with your Linux distribution is an adventure. There are two ways to do it, CCID and PCSCLite, the latter of which runs a background service pcscd – as root, at least on Arch, while GnuPG’s built-in CCID driver accesses the reader directly through the USB dev....
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Remark : I have not had this problem in years, and it’s probably long resolved. Unless you’re using Debian, where people care about this, chances are that setting up GPG Smartcards with your Linux distribution is an adventure. There are two ways to do it, CCID and PCSCLite, the latter of which runs a background service pcscd – as root, at least on Arch, while GnuPG’s built-in CCID driver accesses the reader directly through the USB dev....
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I’m talking to myself but you can join the conversation. It goes like this… How much is your time worth? Ten dollars per hour? Fifty dollars per hour? Thousand dollars per hour? If you pick a number that you like, can you use it to justify your spending habits, to justify buying expensive clothes and car? How much is your time worth? When you wake up with a hangover, is your time worth as much as when you’ve slept well and drank a coff....
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If you know me, or have read various sections of my website, you’ll know that I am a die hard member of the computing industry that also likes to collect vintage computers (this is actually quite common - you’d be surprised how many of my colleagues do the same). Yesterday, I managed to find a very interesting canvas painting in Toronto (the picture at the top of this post), and just HAD to have it. From the signature, it was painted ..
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If you know me, or have read various sections of my website, you’ll know that I am a die hard member of the computing industry that also likes to collect vintage computers (this is actually quite common - you’d be surprised how many of my colleagues do the same). Yesterday, I managed to find a very interesting canvas painting in Toronto (the picture at the top of this post), and just HAD to have it. From the signature, it was painted ..
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