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Go language

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Go is an open source, strongly typed, compiled language written to build concurrent and scalable software. The language was invented at Google by Rob Pike, Ken Thomson, and Robert Griesemer. Go is designed for simple, reliable, and efficient software.

Learn how to create and deploy Go apps, run Go in a containerized app at scale on Google Kubernetes Engine, and more.

Learn the essentials of developing with Go through an interactive tour of the language and its features.

Learn about the global Go Developer Network, where you can meet and learn with fellow Go developers.

Learn the basics of Go, an open source programming language supported by Google that makes it easy to build fast, reliable, and efficient at scale. Explore the basics of Go by compiling and testing a Go app interactively in Cloud Shell, and then deploying it to App Engine.

Learn to create your own Google Cloud Function in Go. Google Cloud Functions is an event-driven serverless compute platform. Write your code without worrying about provisioning resources or scaling to handle changing requirements.

Google Cloud Spanner is a fully managed, horizontally scalable, globally distributed, relational database service that provides ACID transactions and SQL semantics without giving up performance and high availability. In this lab, you will learn how to set up a Cloud Spanner instance. You will go through the steps of creating a database and schema that can be used for a gaming leaderboard.

This codelab will walk you through creating your own Google Cloud Function in Go.

Learn the basics of Go by deploying a simple Go app to Cloud Run, Cloud Functions, and App Engine. Then, use the Go app to access data in BigQuery and Firestore.

Learn how to build cloud solutions with Go.

Meet our Go experts.

Never miss a Go development video.

learning-go

Learn go by building a rest api and a command line interface (cli), the go tour.

The Go Tour covers the most important features of the language.

Please take 30 to 60 minutes to go over it to facilitate the rest of the learning.

The tour is available at https://go.dev/tour .

If you can't do it I'll explain the less obvious parts of the code and also provide the "GO-EXTRA" blocks with more information about certain topics.

Whenever you see "🕵️‍♀️ GO-EXTRA ", it is a block with additional contents, not critical for the current context, that you can skip to read later.

The next section is What you will learn about Go (checklist)

Want to learn and master Go?

Join Exercism’s Go Track for access to 140 exercises grouped into 34 Go Concepts, with automatic analysis of your code and personal mentoring , all 100% free.

140 coding exercises for Go on Exercism. From Book Store to Prime Factors.

Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.

To try and encourage more sales of different books from a popular 5 book series, a bookshop has decided to offer discounts of multiple-book purchases.

Create a sentence of the form "One for X, one for me.".

Prime Factors

Compute the prime factors of a given natural number.

Key Features of Go

Go is fast for computers and humans. Go provides fast compilation, testing, package mgmt, and more

Concurrency

Go's concurrency mechanisms make it easy to write programs for multicore and networked machines

Statically Typed

Go's type system is expressive yet lightweight, enabling flexible and modular program construction

Go compiles to a single static executable, and cross-compilation is easy

Go's design reduces clutter and complexity. Your favorite feature may be missing, by design!

Go has > 1 million developers and every major cloud provider uses core infrastructure written in Go

A taste of the concepts you'll cover

Get mentored the go way.

Every language has its own way of doing things. Go is no different. Our mentors will help you learn to think like a Go developer and how to write idiomatic code in Go. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Go - they'll help you discover the things you don't know that you don't know.

Community-sourced Go exercises

The Go track on Exercism has 34 concepts and 140 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.

Get started with the Go track

The best part, it’s 100% free for everyone.

About the Playground

The Go Playground is a web service that runs on golang.org 's servers. The service receives a Go program, vets , compiles, links, and runs the program inside a sandbox, then returns the output.

If the program contains tests or examples and no main function, the service runs the tests. Benchmarks will likely not be supported since the program runs in a sandboxed environment with limited resources.

There are limitations to the programs that can be run in the playground:

• The playground can use most of the standard library, with some exceptions. The only communication a playground program has to the outside world is by writing to standard output and standard error.
• In the playground the time begins at 2009-11-10 23:00:00 UTC (determining the significance of this date is an exercise for the reader). This makes it easier to cache programs by giving them deterministic output.
• There are also limits on execution time and on CPU and memory usage.

The article " Inside the Go Playground " describes how the playground is implemented. The source code is available at https://go.googlesource.com/playground .

The playground uses the latest stable release of Go. The current version is go1.22.2 .

The playground service is used by more than just the official Go project ( Go by Example is one other instance) and we are happy for you to use it on your own site. All we ask is that you contact us first (note this is a public mailing list) , use a unique user agent in your requests (so we can identify you), and that your service is of benefit to the Go community.

Any requests for content removal should be directed to [email protected] . Please include the URL and the reason for the request.

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[mirror] A Tour of Go

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Folders and files, repository files navigation.

The actual web pages for “A Tour of Go” moved to golang.org/x/website .

This repo still holds the supporting packages like golang.org/x/tour/pic .

Contributors 58

Go Online Compiler

Golang Online Compiler

Practice golang using this online go compiler. develop golang projects within your browser without downloading any software., a brief introduction to go.

Go, also known as Golang, is an open-source programming language that makes it easy to build simple, reliable, and efficient software. Developed at Google in 2007 by Robert Griesemer, Rob Pike, and Ken Thompson, Go is designed for ease of use and scalability in both small and large-scale applications.

Key Features of Go

• Concurrent: Go provides built-in support for concurrent execution and communication between goroutines.
• Efficient: It offers a fast compile time and efficient execution speed due to its statically typed nature.
• Simple Syntax: Go's syntax is clean and easy to understand, making it a popular choice for developers.
• Scalable: It is designed to handle large codebases with ease.

Top Companies Using Go

Some of the top companies using Go include:

• BBC Worldwide

Goroutines and Channels

In Go, concurrent operations are achieved through goroutines and channels. Goroutines are lightweight threads managed by the Go runtime, allowing for concurrent execution of functions. Channels facilitate communication between goroutines by enabling them to send and receive values.

In the above example, we create a channel messages to communicate between two goroutines. One goroutine sends a message into the channel while another receives it.

Error Handling in Go

Go emphasizes explicit error handling through multiple return values from functions. This approach encourages developers to handle errors explicitly rather than relying on exceptions.

In the above example, the divide function returns both the result of division and an error if division by zero occurs.

Go is a powerful language with features that cater to modern software development needs. Its simplicity combined with concurrency support makes it an excellent choice for building scalable applications.

If you're interested in learning more about Go or any other programming language or technology mentioned here, I highly recommend checking out codedamn's courses on web development and app development. With over 200 coding courses available on codedamn covering various technologies including Golang programming language you can enhance your skills effectively.

Happy coding!

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2024 RBC Heritage: Live stream, watch online, TV schedule, channel, tee times, golf coverage, radio

There is no rest for the weary with a signature event on tap this week on the pga tour.

Players make the short trip from Augusta, Georgia, to Hilton Head Island, South Carolina, for this week's 2024 RBC Heritage. In total, 69 golfers will tee it up on Harbour Town Golf Links for yet another signature event on the PGA Tour's playing calendar. Unlike the Genesis Invitational or Arnold Palmer Invitational, the RBC Heritage will not feature a 36-hole cut, meaning the entirety of the field will be around for the weekend.

That is music to the ears to those who missed out on the weekend action at the Masters, including Jordan Spieth, Justin Thomas, Wyndham Clark and Brian Harman. Spieth, the 2022 champion, looks to kickstart his season after a disappointing showing at Augusta National. He is no stranger to bouncing back at the RBC Heritage; he followed a missed cut at the year's first major championship with a win a week later in Hilton Head.

If Spieth is to return to the winner's circle, he will have to go through Scottie Scheffler. The world No. 1 remains in the field for now and aims to collect his fourth trophy in his last five tournaments. Fresh off slipping on his second green jacket, Scheffler has widened the gap between him and the rest of the world and shows no signs of slowing down.

Tommy Fleetwood, Collin Morikawa Xander Schauffele, Ludvig Åberg, Will Zalatoris and Max Homa were among those to perform well at the Masters, and they hope that translates to more of the same. Rory McIlroy, Patrick Cantlay and defending champion Matt Fitzpatrick will look for some form. In total, 26 of the top 30 players in the Official World Golf Rankings are set to play.

All times Eastern; streaming start times approximated   

Round 1 - Thursday

Round starts:  7:30 a.m.

PGA Tour Live:  7:30 a.m. -  6 p.m. --  PGA Tour Live

Live TV coverage:  2-6 p.m. on Golf Channel,  fubo  (Try for free) Live streaming:  2-6 p.m. on Peacock

Radio:  12-6 p.m. --  PGA Tour Radio  

Round 2 - Friday

Live TV coverage:  2-6 p.m. on Golf Channel,  fubo  (Try for free) Live streaming: 2-6 p.m. on Peacock

Round 3 - Saturday

Round starts:  7:15 a.m.

PGA Tour Live:  7:15 a.m. -  6 p.m. --  PGA Tour Live

Early TV coverage:  1-3 p.m. on Golf Channel,  fubo  (Try for free) Live streaming: 1-3 p.m. on Peacock

Live TV coverage:  3-6 p.m. on CBS Live simulcast:  3-6 p.m. on  CBSSports.com  and the  CBS Sports App

Radio:  1-6 p.m. --  PGA Tour Radio  

Round 4 - Sunday

Early TV coverage:  1-3 p.m. on Golf Channel,  fubo  (Try for free) Live streaming:  1-3 p.m. on Peacock

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New augmented reality walking tour reveals what Third Ward ghost signs used to look like

Mike Roe, the executive creative director for Milwaukee marketing agency Hoffman York , got interested in ghost signs when he noticed one outside his office window in the Third Ward, and then started noticing them everywhere in the neighborhood.

Ghost signs are faded advertisements that were painted on the outside of buildings decades ago, the remnants of which can still be seen.

"These signs were like the original out-of-home advertisements before TV, before social media, when you'd paint a big message on the side of your building to say, 'These are things we sell,'" Roe said. "And now it's like this art form of a part of history."

As his interest in the ghost signs grew, Roe started talking to people at the Historic Third Ward Association and learned about some of the factors that make the old, faded signs so prevalent in the Third Ward — including the fact that the area is a federally protected historic district and that it has a concentration of brick buildings built after a fire in 1892 destroyed hundreds of wooden buildings .

Roe wondered if there was a noninvasive way to preserve the signs before they completely fade away so people can see what they looked like in their glory days. With the help of augmented reality technology, he and some coworkers created a ghost sign tour of 13 signs on 10 buildings in the Third Ward. Now people can scan a QR code on a paper map or a mobile link, hold up their phone to a building, and see what the ghost sign used to look like.

Here's what Roe had to say about the tour and his fascination with ghost signs.

How did you learn what the ghost signs used to look like?

Most of the signs are now illegible so I had to find old photographs, some of them century-old. And when you look for those photos, they're usually of other things. So you're sifting through all these old photographs to try to catch these buildings in the background.

I found all these photos at the Milwaukee Public Library and the Milwaukee County Historical Society and the Wisconsin Historical Society . I've never had an excuse to really explore those places before, but whenever I would tell the staff there what I was looking to do, everyone was so friendly and excited and happy to help.

Once we found enough photos for reference, our designers and art directors re-created the signs. The augmented reality work was challenging because that type of technology works really well for closer stuff, like when you go to a furniture store website and they show you what your furniture would look like in your living room. But we were trying to use the technology on a much bigger scale, to show what something would look like on the side of a whole building. The developers used geolocation and got it worked out so when you use your phone to look at the side of the building, the sign will sit there and when you move, it stays anchored and doesn't float around.

What can people expect when they go on the tour?

People can go to the Historic Third Ward Association, 525 E. Chicago St., to get a copy of the map. We're also hoping to partner with other places in the Third Ward, like the Milwaukee Public Market, 400 N. Water St., so people spending time in the Third Ward can pick up a map to either take a walking tour of the signs or use the mobile link ( augmentedhistory.org ) when they come across the buildings.

Then, as you come up to one of the buildings on the map, you use your phone to scan the QR code for that building, and hold up your phone to the ghost sign, and it will overlay the image of what the sign used to look like.

Will there be more ghost sign tours in the future?

What's great about having this tour in the Third Ward is, in addition to so many ghost signs, people can get something to eat, go to the shops and the galleries, spend some time walking around and have a fun adventure.

We've had kind of tunnel vision on creating this experience and making it live, and now, after doing a soft launch, we're realizing how many people are really enthusiastic about this. A lot of people have told me about their passion for this art form, so we'd love to feed that passion as much as we can. And I've noticed there are a lot of ghost signs in the Fifth Ward as well. A part of me would love to expand the tour, and I do love the idea of finding other ghost signs in Milwaukee.

How do you explain your fascination with ghost signs?

I would never have called myself a history buff, but there's something about these signs. I look at them and then when I see what they used to look like, I think about that company and what they used to sell and what it used to be like.

Like one of the buildings had these two Rex Chocolates signs, which was this big chocolate manufacturer. When I was researching them, I found magazine and newspaper articles about them, then on eBay, I found some of their old candy tins. I love to see that there was this whole experience, this whole brand that few people know about now that used to be this giant of Milwaukee industry.

I've got to watch out. It's definitely a rabbit hole.

Where to Find Tickets to Billy Joel’s Sold-Out Residency and Tour Online

In addition to finishing his storied run at Madison Square Garden, the singer is hitting the road for a handful of dates this summer

By Tim Chan

• Where to Find Tickets to Billy Joel’s Sold-Out Residency and Tour Online 2 days ago
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If you purchase an independently reviewed product or service through a link on our website, Variety may receive an affiliate commission.

Millions of people tuned into CBS to watch Billy Joel ‘s Madison Square Garden concert over the weekend, and the special — celebrating his 100th consecutive performance at MSG — has spurred a rush of last-minute ticket sales for his remaining residency dates .

Popular on Variety

Want to find Billy Joel tickets online? Here’s what you need to know.

Find Billy Joel MSG Residency Tickets, Prices

Use our exclusive Variety promo code VAR2024 to save $20 off your purchase at VividSeats.com . Vivid Seats’ rewards program also gets you your 11th ticket free after ten purchases. Learn more at VividSeats.com .

Billy Joel tickets on SeatGeek, meantime, start at $275 right now, with availability for all four of his remaining MSG residency dates. Use our discount code VARIETY10 to save $10 off your purchase at SeatGeek.com .

You can also try finding Billy Joel tickets online on Stubhub , where seats to his Madison Square Garden residency currently start at $267. Stubhub’s “Fan Protect Guarantee” ensures that your tickets are verified and authentic. And if your event is canceled and not rescheduled, you’ll receive 120% credit of your purchase, or get a full refund. See tickets on Stubhub.com .

Where to Buy Billy Joel 2024 Tour Tickets Online

In addition to finishing his storied run at Madison Square Garden, Joel is hitting the road for a handful of dates this summer with shows in Seattle, Chicago, Denver, Cleveland, St. Louis, Los Angeles, San Antonio and Las Vegas. Joel plays Seattle on May 24 and ends his run in Vegas on November 9.

You can find Billy Joel tour tickets on Vivid Seats , SeatGeek and Stubhub . You can also try third-party sites like Ticket Liquidator , Ticket Network and Gametime , and toggle between them to find the best prices online.

Want to watch Joel’s show from home? “The 100th: Billy Joel at Madison Square Garden” is now streaming online on Paramount+ . Stream the Billy Joel concert special online free with a 7-day free trial to Paramount+ here .

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Zach Bryan coming to Greenville: Here's how you can meet the country singer backstage

Are you a Zach Bryan fan interested in attending one of his upcoming Greenville shows? If so, you are going to want to enter this contest to meet the country musician backstage.

Bryan will be making a stop in Greenville for his "The Quittin' Time Tour" on Sunday, May 5, and Monday, May 6, at the Bon Secours Wellness Arena. Both shows will start at 7 p.m.

Greenville is one of 10 cities selected to participate in Bud Light's contest , where fans can win tickets to his show, along with a post-show backstage meet and greet.

Tickets for Bryan's show can be purchased directly through Bon Secour Wellness Arena's website.

Zach Bryan is a 2024 Grammy Award winner

Bryan is an American country singer-songwriter hailing from Oologah, Oklahoma. He is also an eight-year U.S. Navy veteran. He first began uploading music to YouTube in 2017 while in the Navy, his friends capturing his performances through an iPhone. After uploading 16 songs onto YouTube, his song "Heading South" went viral. Once his music gained widespread popularity, Bryan received an honorable discharge from the U.S. army to pursue music full time, according to Biography . The singer is also known for hits, "Something in the Orange," "I Remember Everything," and "Hey Driver." His latest album, "Zach Bryan," was released in 2023.

On Spotify, he has amassed over 30.8M monthly listeners, and was recognized with the Academy of Country Music Award for New Male Artist of the Year in 2022, as well as four Billboard Music Awards. Recently, he was nominated for three 2024 Grammy Awards, taking one home for "I Remember Everything." The song won the category for Best Country Duo/Group Performance.

How to enter contest to win free tickets, meet Bryan

To enter the sweepstakes to win tickets to see Bryan's concert and meet him backstage, you must submit a form through Bud Light's website . The form's instructions are straightforward: enter your name, date of birth, zip code, and email to enter.

What do proceeds for the show go to?

A portion of Bud Light's draft sold at Bryan's shows will benefit Folds of Honor , a nonprofit organization that helps to provide educational scholarships to families of fallen and disabled service members and first responders.

Nina Tran covers trending topics. Reach her via email at [email protected]

Action Report: Bettors sticking with Scottie Scheffler ahead of RBC Heritage

Golfbet News

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As of Wednesday morning, last week’s Masters champion is drawing the most handle (21.2%) on the most tickets (18.3%). He is the only golfer in the field to have double-digit percentages for tickets or handle.

Like he was ahead of the Masters, Scheffler is a massive favorite, +400 to win.

The world No. 1 has won three events (Arnold Palmer Invitational presented by Mastercard, THE PLAYERS Championship and the Masters) in his last four starts, and the one event he didn’t win, he finished T2 at the Texas Children’s Houston Open.

Picks for RBC Heritage, Over/Under Scheffler 8.5 career majors

Specific to the RBC Heritage, played at Harbour Town Golf Links, he finished T11 last year in his lone appearance.

Ludvig Åberg, who finished runner-up to Scheffler at the Masters, is the next most popular player this week. At +1400, he’s pulling in 9.4% of the handle on 8.8% of the tickets. He’ll be making his tournament debut.

Xander Schauffele (+1200) rounds out the top three, as he’s taking in 8.2% of the handle on 8.5% of the tickets. He’s on a great run of late, with three straight top-10 finishes, including T2 at THE PLAYERS.

Schauffele finished fourth at this event in 2023.

Scheffler, Åberg and Schauffele are BetMGM’s biggest liabilities.

Current Handle & Tickets

• Scottie Scheffler – 21.2%
• Ludvig Åberg – 9.2%
• Xander Schauffele – 8.4%
• Patrick Cantlay – 7%
• Cameron Young – 6.5%
• Scottie Scheffler – 18.3%
• Ludvig Åberg – 8.8%
• Xander Schauffele – 8.5%
• Max Homa – 5.8%
• Patrick Cantlay – 4.7%

It’s no surprise Patrick Cantlay (+1800) is generating solid action, as he has five top-10 finishes here in his last six appearances, including losing to Jordan Spieth in a playoff in 2022.

Defending champion Matt Fitzpatrick (+2500) is drawing 3.3% of the tickets and 3% of the handle.

* Visit BetMGM.com for terms and conditions. 21+ years of age or older to wager. BetMGM is available in AZ, CO, DC, IA, IN, IL, KS, KY, LA, MA, MI, MS, NJ, NV, NY, OH, PA, TN, VA, WV, or WY only. All promotions are subject to qualification and eligibility requirements. Paid in bonus bets. Bonus bets expire in 7 days from issuance. Minimum deposit required. Excludes Michigan Disassociated Persons. Please Gamble Responsibly. Gambling problem? Call 1-800-NEXT-STEP (AZ), 1-800-522-4700 (CO, DC, LA, NV, WY, VA), 1-800-270-7117 for confidential help (MI), 1-800-GAMBLER (IN, NJ, PA & WV), 1-800-BETS OFF (IA) or call (877-8-HOPENY) or text HOPENY (467369) (NY), call or text the Tennessee REDLINE: 800-889-9789 (TN) or call 1-888-777-9696 (MS). Sports betting is void where prohibited. Promotional offers not available in Nevada.

The Go Playground

About the Playground

The Go Playground is a web service that runs on go.dev 's servers. The service receives a Go program, vets , compiles, links, and runs the program inside a sandbox, then returns the output.

If the program contains tests or examples and no main function, the service runs the tests. Benchmarks will likely not be supported since the program runs in a sandboxed environment with limited resources.

There are limitations to the programs that can be run in the playground:

• The playground can use most of the standard library, with some exceptions. The only communication a playground program has to the outside world is by writing to standard output and standard error.
• In the playground the time begins at 2009-11-10 23:00:00 UTC (determining the significance of this date is an exercise for the reader). This makes it easier to cache programs by giving them deterministic output.
• There are also limits on execution time and on CPU and memory usage.

The article " Inside the Go Playground " describes how the playground is implemented. The source code is available at https://go.googlesource.com/playground .

The playground uses the latest stable release of Go .

The playground service is used by more than just the official Go project ( Go by Example is one other instance) and we are happy for you to use it on your own site. All we ask is that you contact us first (note this is a public mailing list) , that you use a unique user agent in your requests (so we can identify you), and that your service is of benefit to the Go community.

Any requests for content removal should be directed to [email protected] . Please include the URL and the reason for the request.