We're here at Yale University outside of Beautiful Sterling Memorial Library in the Centre for Teaching and Learning for the fourth annual CS 50 Fair.

And I'm here with my good friend from college.

In fact, Benedict Brown Benedict, What's in store for us today?

Well, we've got about 200 students and CS 50 at Yale this year.

Eso There's gonna be a lot of exciting projects that were all looking forward to seeing were really excited this year to be in the library, which is a spectacular beautiful space.

Lots of room for you all come visit.

Even if you're staring at your laptop, get up hump on an airplane, Get over here in the next half hour and come enjoy our fair.

Wonderful.

So, would you like to join us inside?

Let's go take a look.

Hi, everyone.

This is CS 50.

I'm Jessica here with you.

See in She's going Thio demo her project for us.

So do you mind showing us what your project is?

Okay, so just center.

That's my project.

What I did was a web come fly with me in terms of what it's intended to do.

It's intended to be able to track your flights.

The historic effective taken the future flex, you're going to take you be able to track that and then see where you how long you've spent in each country and then you look a visa information.

That's why to see how you're tracking along with that as well.

So just to take the 1st 1 to register, First of all, you're registered as a user, and then once you've registered, you can just log in.

In this case, I'll just use one of the test using set up separate preloaded.

And then once you set up, you can see all the countries that you've had trips in Google maps and then you'll be able to see how long you spend each country.

So, for example, you spend five days in the UK If you have flights coming up in the future, you can just add flights.

Through this process, you can look up historical trips that you've done in the past.

You can look up by country s O, for example, if I'm looking up Spain, we will find the flights there previously taken show that I flew into Madrid and then left Madrid 57 days later, and I spend seven days in Spain itself.

You contract through and look through all your historical flights.

And then if you have any new flights coming up, there's the possibility off billeting.

If something plans change and something doesn't happen, or you can either modify it, let's say if the airlines have trained just the flight details itself and otherwise you can also look at visa information based on your what you're going to what?

Your citizenship ISS, what passport?

You whole and whether you're traveling for business or leisure and then you pop up with an external website, which is all the information that innit?

Yeah, that's really awesome.

There's so many different components in here is really impressive.

Did you have any CS experience before doing CS 50?

Um, so I did.

I did engineering degree.

That wasn't that coding heavy, but that was like, 10 years ago.

So is a long time ago.

So a lot of this stuff you learned in C.

S.

I didn't actually do much in terms of Web app, so I know that in the past a lot of this muslin in CS 50 a lot of it about, like coding with python on being able to interface with, like, a chi insight and JavaScript and ah, that's ah, love.

It was a nun ago and I've also head and had experiences like sequel and working with secret and having a database and saving information.

So yeah, that's awesome.

Did you have any, like, difficulties on during this or any, like, complication?

Definitely a lot of difficulties like you start off at the start thinking that I'm gonna do oh, this things with this app.

And then as you're walking along, you've realized that things take a lot longer than you.

I think it would.

But along the way, it was useful.

Thio What?

Google is always useful and otherwise I went to the hack a thon as well was able to us some of the teaching fellows they questions about when I ran into, you know, d back errors.

And then and then the CS 50.

Hackathon was very useful in terms off seven hours ahead.

So on the seven of us that went to was a p I summon other, and that really helped me with understanding how way to go about finding a P I's and how to integrate it with my coat.

Yeah, it turned out really good.

Thank you so much for demo ing for us.

I'm Jessica, and this is CS 50.

Hi, this is CS 50.

I'm Jessica here with my name is Tiger.

Okay?

And they're going to show us a demo of their projects.

So can you show us a little bit Something Absolutely.

So initially, we decided to make a two d application of a simple game Well of a simple game in which essentially Europea set and you goes to avoid Facebook and Instagram logos.

You avoid the logos because you need to get your homework done.

And these air distractions and distractions are bad.

How are you?

This game was a little too easy to code, so we decided tow, you know, pump it up a little bit.

And so why not?

We tried making a three d game because of time constraints.

It turned into a three d experience instead.

So if you go look to hear if I re launched it, you would be able to see a platform detection kind of node That would say OK, place the piece that here, looking beings.

I've already pre placed a piece set.

It's an actual virtual object laying on the table, and it will stay there.

But if you look up every four seconds, you see a social media app randomly generated up here now seems overwhelming for now because I've let it run for quite a while, just for effect.

But you gotta get away.

So you pushed focus and the launches a lightbulb at them allowing you thio stay focused in a peace that and avoid distractions.

And this is a piece of protector.

That's a really awesome unimpressive.

Like, did you guys have any experience with anything like this before doing CS 50?

No, no, not none whatsoever.

We found Swift to be an extremely challenging programming language, but But it was fun.

So, you know, three months ago, could you imagine that you created something like this?

No, I've actually always wanted to work with a R v e r.

But I annoyed you how to start, and I even knowing all that CS that he would cover, I could imagine that be able to make something like this by the end.

That's really awesome.

What was the most exciting part about programming this going through the process.

I probably say the most exciting part was this the constant, incremental steps that we made, like we would, you know, code something wouldn't work.

It wouldn't work.

It wouldn't work, it wouldn't work and then eventually would have something very basic shops.

Just every single one of those little basic experiences I thought was fantastic.

Yeah, that's it's so awesome.

Really cool.

I'm really impressed.

So thank you for showing your demo.

Um, I'm Yeah.

Thank you.

I'm Jessica, and this is CS 50.

Hi, everyone.

This is CS 50.

I'm Jessica here with Andrew and William, and they're going to demo their project for us.

So can you tell me a little bit about what your project does?

Yeah.

So what we've done for our project is to create a lost and found site for yield the jail community.

So we're trying to find a way in order for people to declare lost or found items and tryto have people return their items back.

Thio, they're given our lost users.

And so when you first come to our site, you'll be taken to our log in page, which displays our logo on a small description.

But since we've never been here before, let's create a new account that'll bring us to an account page.

And we are going to create a CS 50 specific account, filling out required information about a name, a user name, a phone number on which will be random for now.

And we'll also put in a simple password just for the sake of today, when we create an account will be brought to our home page, where you can learn a little bit more about our sight, our mission, and also see some buttons that might help you navigate the site.

At the bottom of the home.

Page will see a recently found section with items that have recently been found on the site, but I can't see what we're looking for their today.

So let's log in new lost items today.

David has lost his famous phone book, and we can list the more attributes of the phone book.

It's yellow.

It's good condition.

Not very good on deal.

I saw it at the Center for Teaching and Learning, which is right around the corner from Sterling Memorial Library.

His phone book is important but not that important.

So he's gonna offer a $5 reward for anyone who finds it and when we submit, will be brought to a new page with our account.

And this account page basically say's what David has logged for lost items and items that he's actually found.

So people who have lost these items but haven't logged what they've found they've lost can actually look for these fine items.

Now, if we go to the fine Paige, we could see what other people have declared lost.

And let's say that David actually finds the TD flag.

So he finds the TV flag and everything, and he wants to $356 reward for the TV flag.

So he all he has to do is press the more information button, and then we see that our head of college, Mary Lou, has actually lost our TV flag, and therefore all we have to do is contact Ml at yelled at CTU, and hopefully we could return the TV flag back to avert its rightful owner.

Now, finally, the big thing about her AB is one someone actually finds are are lost phone book.

We don't actually have to keep it back on the site.

So what we've done is that once David has found his phone book, all we have to do is press this found button and confirm we found the item and deleted from the database forever.

That's really awesome.

An impressive and also super useful.

Like I wish I had this when I lost my hat the other year.

Yeah.

So what kind of technologies did you use when building this weapon?

So we decided that we wanted to create my only a website.

And so knowing that we've used, like a python and HTML from the past, especially when we're working on her past.

He said we wanted to base our code off of that.

So we used a lot of python for our database holding all of our information.

We use sequel and we use html CSS Java for really kind of the front end of that.

Have you guys ever used Python and html and sequel before coming to see us 50?

Not before CSFB.

I actually hadn't done any coating before CS 50 um and I'm just looking at this now.

It's kind of remarkable how big the improvement has been so it's cool to be able to combine all those different languages into one comprehensive project.

Yeah, that's really great.

What was the most exciting part of building this?

Or also like the challenges that you face?

I think the biggest challenges we've definitely had to face is just debugging the code because I think it takes a lot of patients in order to find, like, the minuscule ares that you might have made, like just spelling errors or, like some variable errors that you might just need to kind of like slowly debug and take your time.

But I think it was also a really fun project because we actually got to make a lot of decisions for ourselves, like how to create our own database.

Howto basically format are like code are html RCs has to make it look, Justice s said.

I guess it does right now.

And so I think it had a lot.

There was a lot of fun parts to the job, but also a lot of challenges that came along with Yeah, definitely.

Well, it turned out really great.

The all the aesthetics are very nice, and that's I know that's quite difficult to do.

Some very impressed.

Thank you so much for showing us your demo of your project.

I'm Jessica, and this is CS 50.

Hi, everyone.

My name is Kevin.

I'm live from the Siesta di fare at Yale.

And today I'm here with Brayden, Jonathan and Alvin, and they're gonna talk to us a little about what they did for the CIA city final project.

Yes.

So just to get started really quick and you talk to us a little about what your project is and how you got the idea to do this.

So basically what the project does is we get access to the uses, Google calendar and the injuries through all of your events and find out when you are free.

And the purpose of this is helps you schedule events in other people and primarily using with went to meet the website.

That helps you find the time.

So you're free and you can just unwrap me.

Just put it into, went to me and makes a lot easier for the schedule events with other people.

Sounds were you also get a quick look at how it works.

We start from the terminal window here.

Just run the program ended requests here I can zoom in.

Askew went to put the start date inundate.

So let's just say today on Let's Start at midnight the previous midnight and let's go till 10 days from now at 10 p.m. And then it finds when you're free just like that.

So those are all the times that people are free to, then me and schedule an event closer all the times one on your couch when you do not have a previously scheduled event.

So that's when you could schedule a jam session or a meeting with a club.

That sounds so what do you So this is, um I guess what you guys have so far.