Travellers into UK will be quarantined for two weeks when they arrive as part of measures to prevent a second peak, Boris Johnson is expected to say. Follow the latest updates

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The transport secretary Grant Shapps will lead the government’s daily coronavirus press conference, which is due to begin shortly.

He will be joined by the deputy chief medical officer Prof Jonathan Van-Tam.

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Tributes have been paid to a learning disabilities nurse who died after testing positive for the coronavirus.

Augustine Agyei-Mensah, known to his colleagues as Gus, was a highly regarded team member at Northamptonshire Healthcare NHS Foundation Trust.

Our hearts break today for Augustine’s wife and young family. We remain committed to supporting them through this time.

Augustine epitomised what we stand for here at NHFT. He was committed to making a difference and giving people a second chance.

Andrew's mother was dying in hospital under lockdown, so he used technology to spend time with her.

Without any modifications, React is really fast as-is. There are, however, a few things that you can do to improve performance. While working at HelloSign, I discovered some quick fixes that made our apps incredibly snappy. With these simple changes, I was able to reduce render time from over 3000 milliseconds to less than 200 milliseconds.

Without any modifications, React is really fast as-is. There are, however, a few things that you can do to improve performance. While working at HelloSign, I discovered some quick fixes that made our apps incredibly snappy. With these simple changes, I was able to reduce render time from over 3000 milliseconds to less than 200 milliseconds.

Editor’s Note:

Check out our upcoming React University Workshops. Our next workshop, React 2016, will be held on April 23 at Microsoft Reactor in San Francisco and will offer a deep dive into creating modern Single-Page Applications (SPA) using React, Redux, React Router, Immutable.js, and Webpack. Also, if you’re interested in learning the basics about what it takes to be a Data Visualization Engineer, check out React and D3.

Introduction

HelloSign is a cloud-based electronic signature tool founded in 2010. As you can imagine, HelloSign is a very JavaScript-heavy codebase. A lot of client-side behavior is necessary to create a rich signing experience. Lately, we’ve moved much of our codebase toward React. In fact, in many places we’ve broken up our codebase into several single-page applications written in React.

Although the HelloSign team was happy with React’s performance before I initially joined the project, I quickly found some low-hanging fruit that could improve runtime speed. Here are the steps you should take to see similar improvements in your own applications.

Create a Baseline Performance Measurement

Before you begin, you should take a baseline measurement. Optimizations are meaningless if you can’t verify the results of your modifications.

Thankfully, Chrome has excellent developer tools to help. One, little-used feature of Chrome’s DevTools is the “Timeline” tool. It allows you to record and analyze all activity in your application. You can record interactions on the page, locate potential memory leaks, measure the total time it takes to perform a task, and identify areas of potential jank. Best of all, the results can be recorded for comparison with your final benchmark.

There’s actually a really awesome video on Chrome’s DevTools that goes into detail about the “Timeline” feature. You can view it here.

We chose to measure the time elapsed between the initial paint of our signer page to the final rendering of the entire page. The initial download of our bundles still needs some optimization, but we’re neither going to mess with nor measure this parameter. It’s fairly easy and consistent to test render time rather than trying to click areas around the page and trying to measure its performance in a repeatable way. Then, all we needed to do was to go to the signer page, open Chrome’s DevTools “Timeline” tab, and refresh the page.

As a side note, make sure that when performing this test, the “Paint” and “Screenshots” boxes are checked so that you can see what the user sees as the page is being rendered.

After all that, we determined that our rendering time from initial paint was a little over 3 seconds. Much too long. Luckily, there was little we had to do to make this quite a bit faster.

Set NODE_ENV to Production

This step is easy to get wrong, even if you are well-informed. React’s documentation provides an overview, but doesn’t provide many specifics. React has great developer warnings and error checking, but these are only intended for development; if you take a look at React’s source code, you’ll see a lot of if (process.env.NODE_ENV != 'production') checks. This is running extra code that is not needed by the end user, not to mention that calling process.env.NODE_ENV is extremely slow. For production environments, we can remove all this unnecessary code. Just keep in mind that you don’t want to do this in development because it will remove all those helpful developer warnings.

If you’re using Webpack, you can use DefinePlugin to replace all instances of process.env.NODE_ENV with 'production', and then use the UglifyJsPlugin to remove all the dead code that no longer runs. Here’s a sample setup that you might use:

// webpack.config.js
  ...
  plugins: [
    new webpack.DefinePlugin({
      // A common mistake is not stringifying the "production" string.
      'process.env.NODE_ENV': JSON.stringify('production')
    }),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      }
    })
  ]
  ...

React Constant and Inline Elements Transforms

React 0.14 introduced support for certain transpile time optimizations with Constant and Inline Element Babel Transforms. React Constant Elements treats JSX elements as values and hoists them to a higher scope. In other words, it hoists static elements and thereby reduces calls to React.createClass. React Inline Elements converts JSX elements into the object literals that they eventually return. Again, this minimizes the runtime calls to React.createClass.

The implementation is rather simple. We added our Babel configuration in our package.json file:

// package.json
  ...
  "babel": {
    "env": {
      "production": {
        "plugins": [
          "transform-react-constant-elements",
          "transform-react-inline-elements"
        ]
      }
    }
  },
  ...

Final Measurement / Conclusion

Lastly, you’ll want to run the benchmark again and compare it with that saved benchmark from before these optimizations. As you can see, the total runtime profile ends 200ms after initial paint! That’s 15 times faster!

After going through the daily grind and slogging, a short break from work becomes the ultimate need of the hour. A small excursion for a day or two is the best way to unwind and get away from the stress and hectic schedule of daily routine city life. Sounds like an exciting idea, right?

When one has time constraints, you can plan a weekend getaway and indulge in interesting recreational activities like camping, cycling, trekking or rafting. You can also explore some amazing places nearby, indulge in shopping, and enjoy local cuisines or mouth-watering delicacies etc. Travelling for such trips is also a lot easier and more convenient, because your home is never too far away. So, get ready to treat yourself and enjoy your life to the fullest during weekend getaways, using these five user-friendly travel apps.

Travel Triangle

Travel Triangle is a registered website of Holiday Triangle Travel Pvt. Ltd. They connect travelers worldwide with multiple local travel experts and agents. Travelers can request personalized packages or choose curated options and book the best travel packages as per their taste & need. The website allows travelers to choose from a wide range of domestic and international destinations. The company has been growing steadily, and now facilitates the travel and bookings of over 200,000 happy tourists annually across the globe.

Cleartrip

Cleartrip is a leading online travel company in India. Based on a straight-forward premise of ¿making travel simple¿ for its customers, Cleartrip achieves this with a clean and clutter-free website, which is fast to load, quick in providing relevant information, simple to navigate, and offers an easy booking process. In 2016 it forayed in the hyper local activities space under the banner of Cleartrip Experiences to become the most comprehensive travel app ever.

Cleartrip Mobile was listed in Apple¿s App Store `Best of 2014¿ list and has also been featured as the `Editor¿s Pick¿. In 2017 Cleartrip received the global CX Visionary award at the 12th annual Genesys Customer Innovation Awards and the SATTE Award for best travel blog in January this year.

We Are Holidays

This online platform enables its users to research, plan, book and share their holidays with a global traveler community. It has created a vibrant holiday space where users are directed to verified. The experience of these experts provides travelers with the insights that you won¿t find anywhere else. The company is a young startup which was founded in early 2011, and its employees have had prior experience working at large OTAs like MakeMyTrip.

Tripoto

Tripoto is one of the largest community of Travelers in the world. Users get a chance to share their amazing travel experiences, discover unique trips and travel itineraries used by other travelers, and connect with an active tourist community from around the world through this website. The platform¿s USP is the ease with which credible travel information can be shared, making it one of the largest crowd-sourced repositories of travel content from across the world.

Travkart

Travkart is a technology backed company offering both online and offline holiday solutions, specializing in fixed departures and curated itineraries. Incorporated jointly by Manheer Singh Sethi and Gursahib Singh Sethi, Travkart was incepted under the aegis of one of the top consolidators in the North Indian travel business and IATA License holder, Sahibji Travels & Tours Pvt. Ltd (established in 1993).

What makes Travkart unique is its commitment to provide smart travel solution to its customers through several unique features and highly convenient tools like Live & Instant Confirmations, Customized Travel Options, Immediate Selling Point (ISP) & Mobile App, Budget Search Tool, Easy & Convenient Payment Gateways. Its B2B marketplace format is beneficial to both travel suppliers and agents.

(Edited by mid-day online desk, with inputs from ANI)

Catch up on all the latest Mumbai news, crime news, current affairs, and also a complete guide on Mumbai from food to things to do and events across the city here. Also download the new mid-day Android and iOS apps to get latest updates

After killing off apps used by a minority of its userbase including the "Twitter for Mac", the micro-blogging site is shutting down its TV apps on Roku, Android TV and Xbox from May 24.

"On Thursday, May 24, Twitter for Roku, Twitter for Android TV and Twitter for Xbox will no longer be available. To get the full Twitter experience, visit https://twitter.com on your device or desktop," the microblogging website tweeted.

This is due to the dismal feedback that users gave because these Twitter apps did not allow them to tweet from their account or fully interact with the Twittersphere in general, The Verge reported.

A report in Tech Crunch, however, said that Twitter has made the decision to kill off these apps as the micro-blogging platform works towards GDPR compliance.

"In addition, neither Xbox or Roku support a standard regularly supported video player, which made them more difficult to maintain. That also came into play with this decision," the report said.

As compared to other TV apps like Netflix, Twitter lacked on the "exclusive video content" front as well.

Twitter for tvOS (Apple TV) and Twitter for Amazon Fire TV will continue to be available.

Catch up on all the latest Crime, National, International and Hatke news here. Also download the new mid-day Android and iOS apps to get latest updates

The race by governments to develop mobile tracing apps to help contain infections after coronavirus lockdowns ease is focusing attention on privacy. The debate is especially urgent in Europe, which has been one of the hardest-hit regions in the world, with nearly 140,000 people killed by COVID-19. The use monitoring technology, however, may evoke bitter memories of massive surveillance by totalitarian authorities in much of the continent. The European Union has in recent years led the way globally to protect people's digital privacy, introducing strict laws for tech companies and web sites that collect personal information. Academics and civil liberties activists are now pushing for greater personal data protection in the new apps as well.

European authorities, under pressure to ease lockdown restrictions in place for months in some countries, want to make sure infections don't rise once confinements end. One method is to trace who infected people come into contact with and inform them of potential exposure so they can self-isolate. Traditional methods involving in-person interviews of patients are time consuming and labor intensive, so countries want an automated solution in the form of smartphone contact tracing apps. But there are fears that new tech tracking tools are a gateway to expanded surveillance. Intrusive digital tools employed by Asian governments that successfully contained their virus outbreaks won't withstand scrutiny in Europe.

Residents of the EU cherish their privacy rights so compulsory apps, like South Korea's, which alerts authorities if users leave their home, or location tracking wristbands, like those used by Hong Kong, just won't fly. The contact-tracing solution gaining the most attention involves using low energy Bluetooth signals on mobile phones to anonymously track users who come into extended contact with each other. Officials in western democracies say the apps must be voluntary. The battle in Europe has centered on competing systems for Bluetooth apps. One German-led project, Pan-European Privacy-Preserving Proximity Tracing, or PEPP-PT, which received early backing from 130 researchers, involves data uploaded to a central server.

However, some academics grew concerned about the project's risks and threw their support behind a competing Swiss-led project, Decentralized Privacy-Preserving Proximity Tracing, or DP3T. Privacy advocates support a decentralised system because anonymous data is kept only on devices. Some governments are backing the centralized model because it could provide more data to aid decisionmaking, but nearly 600 scientists from more than two dozen countries have signed an open letter warning this could, 'via mission creep, result in systems which would allow unprecedented surveillance of society at large.'

Apple and Google waded into the fray by backing the decentralized approach as they unveiled a joint effort to develop virus-fighting digital tools. The tech giants are releasing a software interface so public health agencies can integrate their apps with iPhone and Android operating systems, and plan to release their own apps later. The EU's executive Commission warned that a fragmented approach to tracing apps hurt the fight against the virus and called for coordination as it unveiled a digital 'toolbox' for member countries to build their apps with.

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A high 'star rating' for a mobile medical app doesn't necessarily reflect medical accuracy or value, observe Johns Hopkins researchers. The research

Current regulations for the smartphone apps to spot skin cancers does not provide adequate protection to the public, said researchers. The findings of the study are published in The BMJ.

Two new apps to help the country tackle the growing new coronavirus (COVID-19) pandemic have been created by engineering students of Sona College of Technology,

As many of us continue to stay at home due to the current pandemic, one thing is abundantly clear: Video communication is our present and our future. We thrive on conversations, shared experiences, and social connections. In our yearning for connection, we have turned to a technology that has been around for decades but never used at the scale it is now. Most video chat services are free and have unique features, such as the ability to play games with friends or collaborate with coworkers. But they also come with risk. Here are six things you can do to help you and your family use them safely.

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