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Diversified Crypto Fund Receives FINRA Regulatory Approval


Grayscale Investments has received regulatory approval to publicly quote shares of its diversified crypto fund. The product, which is the firm’s only diversified offering, invests in five main cryptocurrencies. In addition, the firm offers nine single-asset investment funds, some of which...

Recipes for Performance Testing Single Page Applications in WebPageTest


WebPageTest is an online tool and an Open Source project to help developers audit the performance of their websites. As a Web Performance Evangelist at Theodo, I use it every single day. I am constantly amazed at what it offers to the web development community at large and the web performance folks...

7 Crypto ETPs Now Trading on Main Swiss Stock Exchange


Switzerland’s principal stock exchange now has seven cryptocurrency exchange-traded products (ETPs) listed. They allow investors to either gain exposure to individual cryptocurrencies or invest in portfolios of top cryptocurrencies. Four ETPs track the prices of single cryptocurrencies. Also...

Preloading Pages Just Before They are Needed


The typical journey for a person browsing a website: view a page, click a link, browser loads new page. That's assuming no funny business like a Single Page App, which still follows that journey, but the browser doesn't load a new page — the client fakes it for the sake of a snappier...

Meeting GraphQL at a Cocktail Mixer


GraphQL and REST are two specifications used when building APIs for websites to use. REST defines a series of unique identifiers (URLs) that applications use to request and send data. GraphQL defines a query language that allows client applications to specify precisely the data they need from...

“Off The Main Thread”


JavaScript is what they call "single-threaded." As Brian Barbour puts it: This means it has one call stack and one memory heap. We all feel a symptom of that regularly in the form of performance jank and non-interactivity on elements or entire sites. If we give JavaScript lots of jobs and it gets...

Promises and Static Values


Async can throw a real wrench into the cogs of our programming workflows, all despite the fact that async is the modern JavaScript pattern. While async/await helps, there’s sometimes confusion about the way to have a single function that returns a value whether it exists or needs a Promise...

How to Create Non-Fungible Assets and Collectible Tokens With Bitcoin Cash


On August 21, James Cramer, the developer behind the Simple Ledger Protocol (SLP), announced the launch of the Electron Cash SLP version 3.5. The latest release allows people to create a new type of SLP token called NFT1, a non-fungible token that can be grouped together by a single ID....

Other Ways to SPAs


That rhymed lolz. I mentioned on a podcast the other day that I sorta think WordPress should ship with Turbolinks. It's a rather simple premise: Build a server-rendered site. Turbolinks intercepts clicks on same-origin links. It uses AJAX for the HTML of the new page and replaces the current page...

Let Mavo Shine in Building Interactive Web Applications


As you could guess from the title, this tutorial is dedicated to Mavo: a new, approachable way to create complex, reactive, persistent web applications just by writing HTML and CSS, without a single line of JavaScript and no server backend. 🐇 Follow the white rabbit! Mavo is developed...

A More Accessible Portals Demo


The point of the <portal> element (behind a flag in Chrome Canary) is that you can preload another whole page (like <iframe>), but then have APIs to animate it to the current page. So "Single Page App"-like functionality (SPA), but natively. I think that's pretty cool. I'm a fan...

How I Created a Code Beautifier in Two Days


I recently drew up a wireframe for a code beautifier. The next day, I decided to turn it into a real tool. The whole project took less than two days to complete. I'd been thinking about building a new code beautifier for a while. The idea isn't unique, but every time I use someone else's tool,...

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