Exploring Ruby through Rust: RailsClub 2016

# Exploring Ruby through Rust
# 🔴💎🗺⚙🦀
by [@steveklabnik](https://twitter.com/steveklabnik)

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# Ru*

## 1. Ruby 🔴💎
## 2. Rust ⚙🦀

--
## 3. ... ру́сский 🇷🇺

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# ✋ Hold on!

We're gonna talk about a lot of different stuff.

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# ⚙🦀 Rust

* I really love Rust 💖
* It's cool if you don't 🙅🏾
* This talk is about Rust, and Ruby, and C. And having fun. 😎

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# ⚙🦀 Rust

* Apps
* Libraries
* Languages
* Operating Systems (intermezzOS)

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# ⚙🦀 Rust

* Apps
* Libraries
* Languages
* Operating Systems (intermezzOS)
* Hardware (?)
* Physics (?)

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# ⚙🦀 Rust

![ruby core team](productive.png)

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# ⚙🦀 Rust

![rust rfc roadmap](rfc.png)

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# ⚙🦀 Rust

![akira quote](akira.png)

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# ⚙🦀 Rust

* `String#blank?`

```ruby
/\A[[:space:]]*\z/ === "Привет"
```

* `chars.rs`

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# Why?

Let's talk about Ruby internals.

* `include/ruby/ruby.h`
* `RObject`
* `RBasic`
* `VALUE`

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# What happens when we `blank?` in Ruby?

* `mem.rb`

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# Let's talk about Rust!

* char 🔤
* no GC 🗑
* optimizations ⚡
* stack vs heap allocation 📚

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# Let's talk about C and Ruby!

* [fast blank](https://github.com/SamSaffron/fast_blank)
* cexts & FFI

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# ⚙ Rust + Gems 💎
# ✨ DEMO TIME ✨

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# Rust + Gems

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# Rust + Gems

![python speed improvement](python.png)

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# Rust + Gems

![whole site averages](avg.png)

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# Let's do something silly
#😜😜😜

I told you this talk wasn't about serious stuff.
But I've been so serious.

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# <blink>ANNOUNCING STEVE"S FORK OF RUBY</blink>

# 🎉🎉🎉
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# <blink>ANNOUNCING STEVE"S FORK OF RUBY</blink>

# 🍴🍴🍴

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# <blink>ANNOUNCING STEVE"S FORK OF RUBY</blink>

([It has four commits](https://github.com/ruby/ruby/compare/trunk...steveklabnik:rust))

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# THANK YOU

Go forth, do fun stuff, enjoy computers

#❤️❤️❤️