Build your own Excel 365 in an hour with F# - Tomas Petricek - YouTube

There are many interesting things happening in a spreadsheet. It needs an interactive user interface where users can edit data and formulas in cells, it needs to parse formulas that users write, it needs to evaluate formulas and show results on the fly and it also needs to handle errors such as division by zero and circular references. In this live coding session, Tomas will attempt to implement all of these features live on stage!The talk will show a number of techniques and principles that are useful even if you do not plan to create a competition to Excel 365 and Google Sheets!Along the way, you will learn about the Fable compiler which makes it easy to compile correct, functional-first code to JavaScript and run it in a browser. You will also learn about a number of powerful functional programming techniques. We will use the Elm architecture to create an interactive web application in a functional way and we will use parser combinators to easily create parser for formulas. Finally, we will look at the tips and tricks for handling errors and creating computations that update on-the-fly when data change.NDC Conferences

A.C Clemont

Mad respect.

Erlina SR

You are Smart and cool dude perfect 😍😊

Ceri Sturgess


lee log


lili ruri

this is bringing back 7 year old me memories...

Stefan Karpychev

43:49 can i make this easter egg on ps3?

Brady Cooper


Renuka Kulkarni


Castor Gamer

Excellent video



Chloe Cooper

Pregnant women in the middle of the street screaming that she wants pills

Oh yeah Yeah

Neymar lol



Bobby Hob



I’m team Cody,Tyler,and Coby from his first win.

chris parsons

Ty your life is a pop fecs what 😎😎😎😎😎😎😎😎😎😎😎😎😎😎


ARROW, Cody my man it's a BOLT

Alex Loves Music

Le Doge @ 14:00

Taledzha Michelle Robinson-Togia

0:00 every single time I take math

Mitchell Carestio

The song isn't good wow u guys improved in your videos

Sister and Bro

4:48 Christmas trees: nukeChristmas tree: kills him


4:10 somewhere Ready bro is Sean's voice

yeet fortnite

But the whale can ram the squid but it didn't have time to do it

Silvana Ibrahim

The mostly didn't like was when he dropped the camera


Diamond will be forever missed, my heart goes out to you guys💕💕💎💎💎

its nathan

Most people say lion, because they want to be the king of the jungle 😂😂😂 lions don't live in the jungle

Grant Shu

Man they must really like Akina :P

Linda Van gog


abdouu baki

I’m eating launch a chawarma with mango 🥭 juice and watching faze rug 💯

Eric Staley

1:31 thought that he failed horribly and hit something off the ceiling


Is that Ian malcome

What's happening

anyone here wanna sell me some of the new gold weapons that came from the new dlc? i saw someone had a gold tier grappling hook and i want one among other gold tier toys. i have millions in cash. I'm on xbox one. gamertag is JusLookAtcha

Shulangki XXO

Guess I'm safe now as I'm single... 😂😂😂😂😂



papas ramirez


dand dandy

so he maded this move or nah 3:55


FarCry3 Blood Dragon should be all over this list.

Elizabeth Whiteman

I know how you feel, whenever my grandpa had a heart attack, I was just wishing it was all just a horrible nightmare, and he passed away exactly one week later. And then last May my Papa had a stroke, and the the next Thursday at a restaurant after we had a bday party for a relative my one of my parents got a call and I thought eh it's just a business call, but it was the news that my Papa had passed away.

the warrior



wheres ian?


I guess you can say ... that was a total shock for him XDDD... Yes I know what I did and I feel bad about it

Fran el pro Stragua

Primer comentario en español????

XXOZZY Basketball is life

I'm English


Nested Menu