@ c4

Dear Rustaceans,

we’re happy to announce that our next meetup will be on Wednesday, August 7th, 2019 at 19:15!

This time we’ll have two talks: Matthias Endler will talk to us about using Rust to build applications with WebAssembly. Florian Zeitz will contrast the C programing language with Rust in terms of their safety guarantees and resulting performance.

Afterwards there will be time for socializing and open discussion over some drinks.

We are looking forward to seeing you. :-)

Yours, Florian

The meetup will likely be held in English, we will however reevaluate this at the beginning of the evening and may switch to German if desired.

  1. WebAssembly

    WebAssembly has the potential to change the way we write and deploy software in the future and Rust is in a great position to become the best language to target WebAssembly. Let me show you why I think both of these statements are true and why you should care. Featuring simple examples!

  2. How defined is Rust?

    C is notorious for its undefined behavior. It is relatively easy to void all program behavior by making a small error. Rust has no undefined behavior in its safe subset. Yet it has to deal with the same situations C makes undefined somehow, ideally without sacrificing performance. Also Rust’s unsafe subset has its own set of undefined behavior. This talk will investigate how Rust deals with issues like oversized shift amounts, type punning, and integer overflow.

Location: Chaos Computer Club Cologne (c4) e.V.

Heliosstr. 6a


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  • Via subway lines 3, 4, or 13 to “Venloer Straße/Gürtel” (exit the station towards “Heliosstr./Bezirksverwaltung”)
  • Via bus lines 141, 142, or 143 to “Venloer Straße/Gürtel”
  • Via train to “Köln-Ehrenfeld” (exit the station towards “Venloer Straße”)

Cross Venloer Straße and go into Heliosstraße. After 2–3min you arrive at the last building before an apartment complex labeled “Stayery” (on the right side). The entrance is next to the parking spots.