Or are you using more of like a channel approach where these are channel partners that have developers on staff to go after local companies? Impressive close to the year yet again. And what is the risk that you're not being able to catch up with your plans at some point catches up with your growth trajectory? So I think that's the ultimate story here. Austėja is a new mom, law graduate, and “mom-and-pop” entrepreneur turned full-time frontend developer This is the gutsy story about how Austėja found her passion for frontend development. They added Twilio Video for online tax prep appointment and are also using voice, SMS, and chat to provide a unified customer experience. Can you help us understand, or just estimate, what portion of messages you're processing today that are two-way and maybe what types of discussions are emerging to use it in the future? Thank you to all Twilions for helping deliver such outstanding results and doing so much to help our customers, as well as the broader community during such a difficult year. On our marketing side, we continue to focus on developers while also engaging more and more at the executive level. Weighing in at 133kb, React is considered to be a relatively heavy dependency. I wonder if you could spotlight your international go-to-market efforts. And we expect a first-quarter operating loss in the range of $15 million to $20 million. They require security. And what we're seeing is a lot of new use cases have been accelerated because of the events of the past year. Here, we're listing the same questions plus vetted answers for you to adapt. And then maybe just one for Khozema. We have also included a PDF below in case you'd like something to download and print . To close, we delivered very strong results in 2020, and we are excited about 2021 and the years beyond. And when the barriers come down, i.e., instead of having to go spend tens of millions of dollars and sign a contract upfront for some giant multiyear IT project but rather get started with little risk, spend $1 or $2 building a prototype, that the outcome, the benefits of being able to move quickly in that way of building and moving from a prototype to a beta to a production rollout with ease and little equipment along the way that that would just take over. BP Hatch provides Server and Storage Administration to the Department of Training and Workforce Development, and other private companies throughout Western Australia. Meaning, how many of them are still starting with one product versus thinking about you right from the bat as a platform and think about you as a multiple use case right at the starting point? In most cases, this is unnecessary, and it would be better to run the effect only if something has changed. And so I think this trend, whether it's delivery drivers, whether it is retail salespeople, whether it is even knowledge desk workers working from a variety of places, using omnichannel communications to actually do two-way communications, build relationships, and where the company wants to track those communications. And then maybe as a second question, just on the net expansion rate kind of picking back up. React ordinarily has one mounting point - the HTML element you pass to ReactDOM.render. How does state in a class component differ from state in a functional component? I think there was some investor concern around that back in Q1. Thank you for the question, Alex. In preparation for the upcoming tax season, H&R Block wanted to provide better virtual tax preparation experiences while leveraging a single platform. Forward-looking statements represent our beliefs and assumptions only as of the date such statements are made. Yes, SIP trunking is an exciting product category for us, and we've got a very flexible product. I mean, the way that we characterized it was that we've had kind of a flat quarter-over-quarter gross margin dynamic that was aided by political fees, as we said in our prepared remarks. Now, moving on to guidance. What is the difference between props and state? It does seem like one of the perfect examples of the opportunity to use that customer data than to engage with those customers. There isn't much reason to use refs for this reason in class components because it's more natural to store these values in fields that belong to the class instance and would be persisted between renders regardless. Thank you very much and congrats to all the Twilions. But the thing that's consistent is the need for digital transformation, the energy and focus on the developer, and that plays well in all markets. Your next question comes from the line of Rich Valera from Needham & Company. I don't think there's an internal issue, and I don't think there's actually a lot that we have to do internally to necessarily solve it. Our developer ecosystem is one of the long-term competitive advantages for Twilio, and we're going to continue to focus on making them successful. Get the latest science news and technology news, read tech reviews and more at ABC News. A likely name for this kind of function would be onLanguageSelect. You called out strong traction with Flex in the press release. Hey, Peter here. Jeff, when we look at your international business and the opportunity there to be a multi-year growth driver, what's the biggest one or two levers that you could pull? And Deloitte recently released a report stating that during the next 18 to 24 months, they expect to see leading companies embrace the bespoke-for-billions trend by exploring ways to use human-centered design and digital technology to create personalized, digitally enriched interactions at scale. Segment will enable Camping World to quickly and easily understand who their most loyal customers are across domains to allow personalized rewarding experience across all of Camping World's digital touchpoints. I think you're right. The second use of refs is in functional components, where they are sometimes a good choice of utility to persist values between renders without triggering the component to re-render if the value changes. So on these lines, I'd like to ask, what do you think can be the benefits in your approach to offering the customer experience platform, a platform of approach in comparison with some of the other software vendors out there who are approaching customer experience from an application down perspective? I am extremely grateful for her contributions to the company during her tenure. This is why we've been building out our customer engagement platform that truly serves the end-to-end life cycle of all customer engagement in the enterprise. One example of an open source HOC is React Sortable HOC, whereby you pass a list component (based on ul) and receive an enhanced ul with sorting and drag and drop capabilities. Operator, please open the line for questions. When useEffect runs exactly depends on the dependencies array argument: The useEffect function takes two arguments - an effect function and an optional dependencies array. Hey, Michael, this is Khozema. So I'm not particularly worried about it, Ittai. The key here would be to recall a time when you have used a HOC in your own project and to describe why it was the right pattern for the job, Portals provide a first-class way to render children into a DOM node that exists outside the DOM hierarchy of the parent component, The names "controlled component" and "uncontrolled component" are unnecessarily broad. Because the modal "spills" out of the container, this not only feels unnatural, it can also be finicky to pull off because the About component might already have overflow: hidden set or a deliberate z-index. Yeah, I'd love to maybe start on Segment. And so again, as we think about our platform and customer engagement, I think that it is a rich area of opportunity for us to invest in order to unlock developer influence and developers' ability to build the future of these companies, in the same way that we have with communications and customer data, respectively, which is easy-to-adopt APIs, usage-based pricing models, published documentation and things like that that enable developers to come in, rapidly build solutions to the things that companies need built and then take those prototypes all the way through to production because that's the agile nature of business today. Both refs and state variables provide a way to persist values between renders; however, only state variables trigger a re-render. The report covers several topics, including our focus on helping our neighbors and communities. Why you should use refs sparingly in production, React : Controlled vs. Uncontrolled components, The key thing to mention in your answer, Where to learn more if you happen to identify a gap in your knowledge, ⛔️ In some cases, we'll also mention common wrong answers for you to avoid at all costs, The important thing to mention here is, For an alternative viewpoint, we also recommend you read, ⛔️ A common misconception is that the VDOM is a React feature. Thanks for taking my question. That continued certainly in Q4, so that was a driver of upside. If you think about the explosive demand of that category and just how many different options there are out there for customers, what are you hearing in real time about your own product? I think that the infrastructure to build great digital products and great digital experiences spans many categories. These options (if you like) belong to the parent component and must not be updated by the child component receiving them. Lean LaunchPad Videos Click Here 3. How are you thinking about any remaining pent-up investments, if you will, and how this kind of layer back into the model as we look forward to 2021? Maybe a follow-up for you, Khozema, on the hiring side. Your next question comes from the line of Ryan Koontz from Rosenblatt Securities. You know, not really, Derrick. But that said, we are really pleased with the early start that Frontline is seeing in the market. Yes, I think one of the things that Twilio really bet upon when we founded the company was that developers would become even more influential as companies had to turn to digital, had to become more agile, and had to really build for this digital era because developers are the ones who know the toolchain, they know how to get things done. This is Jeff. We are extremely excited about the addition of Segment to Twilio. First of all, how the productivity of the ramp is, and how consistent is it across the higher base? Revenue from our top 10 active customer accounts represented 13% of revenue in Q4 compared to 14% both last quarter and Q4 of last year. While prop drilling is not inherently bad, there are normally more eloquent and maintainable solutions to explore like creating compound components ✳️ or using React Context however, these solutions are not without their limitations. While HOCs are associated with React, they aren't a React feature so much as a pattern inspired by a functional programming pattern called higher-order functions whereby you also pass functions to functions. An example would be a custom form component. This can be noticeably inefficient . I think you're right. And honestly, we don't see a negative in that. They build out prototype. If you want to land a great React job in 2020 or 2021, this is the post for you . Because companies need to understand who their customers are, what products they're looking for, what products they bought, and where customers are interacting with their brand across multiple touchpoints. Thanks for the color. In that course, Cassidoo draws on her professional experience working at Netlify (and before that, CodePen) to share 26 likely React interview questions and example answers. But if you follow our developer evangelists, you'll see them not only physically in all these geographies but also in all the digital channels that are relevant for developers all around the world, and we certainly see our developers active and provides content and trying to reach developers in multiple places and languages. OK. And then on Flex, obviously, the contact center market seems to have reached a bigger tipping point toward cloud. Thanks. State is optional, meaning some components have props but no state. Makes sense. Imagine a small About component with a button to open a modal. Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. These are all designed to help companies to adopt and build two-way messaging experiences that augment and improve, oftentimes, the first use case, which is that outbound notification. I’m now officially a Software Engineering apprentice and learn something new every day. And you get things like Frontline and Flex and a number of the other products that we've built in recent years. I want to begin today's call by recognizing that it's Black History Month here in the United States. A component can update its own state but cannot update its own props. That's an interesting area. However, as our business has scaled, coupled with the strong revenue diversification, disclosing the contribution from a single customer is less meaningful. But I largely attribute it to, a, a great team; and also, b, just a fantastic market that we're playing in. Thanks, George, and good afternoon, everyone. Thank you so much for taking my question and congratulations on such a strong quarter. You have to go in with the mentality that you’re going to be challenged. But probably, I think we just have a lot of strength in our business. Certainly. So it's still very early. Clearly, you've expanded it quite substantially last year. When someone is new to React, refs often feel familiar to them because they are used to freely writing imperative code. We're also starting to see specific opportunities for joint products, which we will talk about in future quarters. Less than 10% is actually what we said previously. We also signed a deal with one of the world's largest retailers. Well, I think that certainly, every market is a little bit different, frankly, and the dynamics are a little bit different. So I think there's a lot of levers that we can pull, and we have been pulling. And so when we think about going into any market, whether it's domestic or international, we start with developers. We need to talk to their customers all around the world, so we have a very naturally global product just out of the gate. Derrick Wood -- Cowen and Company -- Analyst. If the child component that needs the data happens to be deeply nested, we sometimes resort to prop-drilling, which can be a slippery slope. And finally, we built this guidance off of our fourth-quarter results, excluding the political traffic contribution. Needless to say, I mean, the business growing so fast, I understand. This is George. How do you pass a value from a parent to child? I mean, obviously, we had to contend with the global pandemic last year, right? While a child cannot update its own props, the value of those props can change if the parent changes them through a state change. So it'd be great to hear what you're seeing in terms of changes in buying behavior, particularly when it comes to developer involvement, and how you see these trends helping Twilio gain more wallet share in the years ahead. Conversely, an uncontrolled component manages its own state - the component is not controlled by React and is, therefore, "uncontrolled". Let me quickly touch on a few of the highlights for the full year. That does include the contribution from Segment. They were looking to accelerate their efforts to focus on a digital-first engagement strategy and selected Twilio to build multiple solutions, including WhatsApp within Flex for agents and sales communication, video solutions for sales agents to talk to VIP clients, and video solutions for telemedicine appointments. I think number one is the go-to-market investments that George and team have been making to grow our presence abroad, including hiring great meters for the theaters, which we have. We are making the right investments today to scale the company and take advantage of a generational opportunity. And while Segment is running independently today, as we continue our integration planning, we are working on some integration on the G&A side, as well as some exciting organically evolving innovation synergies on the product side. And, Jeff, let me add my congratulations to Karyn Smith. Your line is open. 1. React interview questions to expect in 2021 (with answers), Enroll in the Frontend Developer Career Path. You can either reference it using React's top-level API (React.Fragment) or using JSX syntactic sugar (<>). Thank you. With this fantastic product that we have, the architecture we have, it's a really resonant story with companies that are looking to move to the cloud and don't want to use the legacy technologies and also want a new approach, a much more flexible approach, a much more shared-risk approach and an approach that allows them to really deliver exactly what they need and not have to buy more than that. Will, it was pretty broad-based strength across the business, I would say, in Q4. In fact, in 2020, the number of transactions with Global 2000 customers was up 76% over last year, and the number of seven-figure deals overall was up 93% from 2019. When dependencies is present, React compares the current value of dependencies with the values used in the previous render. Are there certain use cases or industries you're finding success with that you'd like to highlight here for us?
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