Why JavaScript when you can see sharp?

So far JavaScript had a monopoly on web code - we could either write some form of JavaScript or not execute code on the web.
The WebAssembly standard changes that, by defining a binary code standard that could be directly executed by the browser. That binary code could be written in any language compilable to wasm - and that could mean C# as well.

In this session we'll take a look at Blazor, an engine that enables us to write C# code for the server, C# code for the client, run it, and, if we're lucky, it might even work.

Transcript

1. Nov 17, 2018 Sofia var title=“Why JavaScript when you can see sharp?“; var info = { name: “Wekoslav Stefanovski”, position: “Head of development”, company: “Sourcico”, country: “Macedonia”, twitter: “@swekster”, };
2. Nov 17, 2018 whoami(); •Head of Development in Sourcico Macedonia •Coding professionally since last century •I love programming, I love programmers •Long and fruitful love relationship with C# •Long and fruitful love / hate relationship with JavaScript •Love web development, hate all the drama Wekoslav Stefanovski @swekster
3. Nov 17, 2018 agenda(); • Web applications, what are those? • Why JavaScript sucks? • What is Blazor? • How does it work? • What can we make with it? Wekoslav Stefanovski @swekster
4. Nov 17, 2018 Thanks to our Sponsors: General Sponsor: Gold Sponsors: Technological Partner: Hosting Partner: Silver Sponsors: Lunch Sponsor: Innovation Sponsor: Bronze Sponsors: Infotainment Sponsor:
5. Nov 17, 2018 Regular Web Application • We have to use a client and a server architecture • We can write the server in many, many languages (including C# and JavaScript) • We have to write the client in JavaScript Wekoslav Stefanovski @swekster
6. Nov 17, 2018 Why JavaScript sucks • Built as a scripting language – and the legacy shows • No language solutions to common problems (i.e. namespaces) • Weird type coercion and equality rules • Half-baked object orientation • It's gotten much, much better in recent years • Still, sometimes feels like putting lipstick on a pig • And still, it's the only choice! Wekoslav Stefanovski @swekster
7. Nov 17, 2018 And now for something completely different... • Let's build the server in JavaScript (because we want to) • Let's build the client in C# (because we now can :D ) Wekoslav Stefanovski @swekster
8. Nov 17, 2018 DEMO Our first C# web-client
9. Nov 17, 2018 What did we see? Wekoslav Stefanovski @swekster C# running in the browser !!! .net dlls executing on the client !!! MASS HYSTERIA !!!
10. Nov 17, 2018 What did we see? • C# running on top of the mono runtime, built on top of wasm • Razor-like syntax • Still highly experimental, but showing tremendous promise Wekoslav Stefanovski @swekster
11. Nov 17, 2018 So, what can Blazor do? • A component model for building composable UI • Routing • Dependency injection • JavaScript interop • Usage of existing code libraries Wekoslav Stefanovski @swekster
12. Nov 17, 2018 C# all the things!
13. Nov 17, 2018 Bottom line • Great potential for development • Not ready for production (yet) o You can help with development • Gives us an (real) alternative for modern web development Wekoslav Stefanovski @swekster
14. Nov 17, 2018 Questions? Comments? Criticisms? @swekster
15. Nov 17, 2018 Thanks to our Sponsors: General Sponsor: Gold Sponsors: Technological Partner: Hosting Partner: Silver Sponsors: Lunch Sponsor: Innovation Sponsor: Bronze Sponsors: Infotainment Sponsor: