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Look at all these toys!
Help – it’s Ruby!
All alone
Is Ruby dying?
Where do Rubyists go?
Where do Rubyists go?
Tobias Pfeiffer
@PragTob
pragtob.info
673 Responses
First Rails Release
Rails 1.0
“I had written half of Rails in
PHP. Then Rails was announced
and it was like a cheat code to
a working framework.”
Why did you learn Ruby?
First Rails Girls Workshop
First Rails Girls Berlin Workshop
Surveys and Bias
Like some bias?
Like to do Ruby in 5 years?
Omissions
Tools
Disclaimer
Meet & Greet
1990 1995 2000 2005 2010 2015
Name:
Popular Rubyists:
Known for:
Self-assessment:
Ruby
All of them
Metaprogramming, dynamic,
Scripting, web
A dynamic, open source
programming language with a
focus on simplicity and
productivity.
FizzBuzz!
1
2
1
2
Fizz
1
2
Fizz
4
Buzz
1
2
Fizz
4
Buzz
Fizz
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
16
…
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
Name:
Popular Rubyists:
Known for:
Self-assessment:
Crystal
Erik Berlin, Piotr Szotkowski,
Fabio Akita
Ruby-like, Performance, Type
Inference
Fast as C, slick as Ruby
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
def fizzbuzz(n)
if (n % 15).zero?
"FizzBuzz"
elsif (n % 5).zero?
"Buzz"
elsif (n % 3).zero?
"Fizz"
else
n
end
end
(1..100).each {|n| puts fizzbuzz(n)}
cp fizzbuzz.rb fizzbuzz.cr
Name:
Popular Rubyists:
Known for:
Self-assessment:
Elixir
José Valim, Dave Thomas,
Xavier Noria
Erlang VM, Actors, Functional,
Phoenix
dynamic, functional language
designed for building scalable
and maintainable applications.
defmodule FizzBuzz do
def fizzbuzz(n) when rem(n, 15) == 0, do: "FizzBuzz"
def fizzbuzz(n) when rem(n, 5) == 0, do: "Buzz"
def fizzbuzz(n) when rem(n, 3) == 0, do: "Fizz"
def fizzbuzz(n), do: n
end
Enum.each(1..100, fn i -> IO.puts(FizzBuzz.fizzbuzz(i)) end)
defmodule FizzBuzz do
def fizzbuzz(n) when rem(n, 15) == 0, do: "FizzBuzz"
def fizzbuzz(n) when rem(n, 5) == 0, do: "Buzz"
def fizzbuzz(n) when rem(n, 3) == 0, do: "Fizz"
def fizzbuzz(n), do: n
end
Enum.each(1..100, fn i -> IO.puts(FizzBuzz.fizzbuzz(i)) end)
Name:
Popular Rubyists:
Known for:
Self-assessment:
Haskell
Chad Fowler
Type System, Monads, Pure
An advanced, purely functional
programming language.
main = mapM_ (putStrLn . fizzbuzz) [1..100]
fizzbuzz x
| x `mod` 15 == 0 = "FizzBuzz"
| x `mod` 3 == 0 = "Fizz"
| x `mod` 5 == 0 = "Buzz"
| otherwise = show x
main = mapM_ (putStrLn . fizzbuzz) [1..100]
fizzbuzz x
| x `mod` 15 == 0 = "FizzBuzz"
| x `mod` 3 == 0 = "Fizz"
| x `mod` 5 == 0 = "Buzz"
| otherwise = show x
main = mapM_ (putStrLn . fizzbuzz) [1..100]
fizzbuzz x
| x `mod` 15 == 0 = "FizzBuzz"
| x `mod` 3 == 0 = "Fizz"
| x `mod` 5 == 0 = "Buzz"
| otherwise = show x
Name:
Popular Rubyists:
Known for:
Self-assessment:
Go
Katrina Owen, Evan Phoenix
Goroutines, Simple, No
Exceptions, No Generics
open source programming
language that makes it easy to
build simple, reliable, and
efficient software.
package main
import "fmt"
import "strconv"
func FizzBuzz(i int) string {
switch {
case i%15 == 0:
return "FizzBuzz"
case i%3 == 0:
return "Fizz"
case i%5 == 0:
return "Buzz"
default:
return strconv.Itoa(i)
}
}
func main() {
for i := 1; i <= 100; i++ {
fmt.Println(FizzBuzz(i))
}
}
package main
import "fmt"
import "strconv"
func FizzBuzz(i int) string {
switch {
case i%15 == 0:
return "FizzBuzz"
case i%3 == 0:
return "Fizz"
case i%5 == 0:
return "Buzz"
default:
return strconv.Itoa(i)
}
}
func main() {
for i := 1; i <= 100; i++ {
fmt.Println(FizzBuzz(i))
}
}
package main
import "fmt"
import "strconv"
func FizzBuzz(i int) string {
switch {
case i%15 == 0:
return "FizzBuzz"
case i%3 == 0:
return "Fizz"
case i%5 == 0:
return "Buzz"
default:
return strconv.Itoa(i)
}
}
func main() {
for i := 1; i <= 100; i++ {
fmt.Println(FizzBuzz(i))
}
}
Name:
Popular Rubyists:
Known for:
Self-assessment:
Rust
Steve Klabnik,
Yehuda Katz, Sean Griffin
Memory Management,
Compiler, Firefox Quantum
a systems programming
language that runs blazingly
fast, prevents segfaults, and
guarantees thread safety.
fn main() {
(1..101).for_each(|n| println!("{}", fizzbuzz(n)))
}
fn fizzbuzz(n: i32) -> String {
match (n % 3, n % 5) {
(0, 0) => "FizzBuzz".to_string(),
(0, _) => "Fizz".to_string(),
(_, 0) => "Buzz".to_string(),
_ => n.to_string(),
}
}
fn main() {
(1..101).for_each(|n| println!("{}", fizzbuzz(n)))
}
fn fizzbuzz(n: i32) -> String {
match (n % 3, n % 5) {
(0, 0) => "FizzBuzz".to_string(),
(0, _) => "Fizz".to_string(),
(_, 0) => "Buzz".to_string(),
_ => n.to_string(),
}
}
fn main() {
(1..101).for_each(|n| println!("{}", fizzbuzz(n)))
}
fn fizzbuzz(n: i32) -> String {
match (n % 3, n % 5) {
(0, 0) => "FizzBuzz".to_string(),
(0, _) => "Fizz".to_string(),
(_, 0) => "Buzz".to_string(),
_ => n.to_string(),
}
}
Name:
Popular Rubyists:
Known for:
Self-assessment:
JavaScript
Yehuda Katz, Jeremy Ashkenas
Quirks, Async, Compile to
a lightweight interpreted or JIT-
compiled programming
language with first-class
functions.
const fizzBuzz = n => {
if (n % 15 === 0) {
return "FizzBuzz";
} else if (n % 3 === 0) {
return "Fizz";
} else if (n % 5 === 0) {
return "Buzz";
} else {
return n;
}
};
for (let n = 1; n <= 100; n += 1) {
console.log(fizzBuzz(n));
}
const fizzBuzz = n => {
if (n % 15 === 0) {
return "FizzBuzz";
} else if (n % 3 === 0) {
return "Fizz";
} else if (n % 5 === 0) {
return "Buzz";
} else {
return n;
}
};
for (let n = 1; n <= 100; n += 1) {
console.log(fizzBuzz(n));
}
const fizzBuzz = n => {
if (n % 15 === 0) {
return "FizzBuzz";
} else if (n % 3 === 0) {
return "Fizz";
} else if (n % 5 === 0) {
return "Buzz";
} else {
return n;
}
};
for (let n = 1; n <= 100; n += 1) {
console.log(fizzBuzz(n));
}
Name:
Popular Rubyists:
Known for:
Self-assessment:
Clojure
Russ Olsen, Bozhidar
Batsov, Arne Brasseur
Rich Hickey, Lisp, JVM, ()
a robust, practical, and fast
programming language with a
set of useful features that
together form a simple,
coherent, and powerful tool.
(defn fizzbuzz [n]
(cond
(zero? (mod n 15)) "FizzBuzz"
(zero? (mod n 3)) "Fizz"
(zero? (mod n 5)) "Buzz"
:else n))
(run! println (map fizzbuzz (range 1 101)))
(defn fizzbuzz [n]
(cond
(zero? (mod n 15)) "FizzBuzz"
(zero? (mod n 3)) "Fizz"
(zero? (mod n 5)) "Buzz"
:else n))
(run! println (map fizzbuzz (range 1 101)))
(defn fizzbuzz [n]
(cond
(zero? (mod n 15)) "FizzBuzz"
(zero? (mod n 3)) "Fizz"
(zero? (mod n 5)) "Buzz"
:else n))
(run! println (map fizzbuzz (range 1 101)))
What you got?
Paradigm
Procedural Procedural
Functional
Functional
Procedural
Functional
Object Object Functional Functional
Parallelism
Parallelism vs Concurrency
Yes
Goroutines +
channels
Yes
Agnostic
Yes/No
Webworkers+
Yes
STM, pmap,
Transducers
Concurrent Concurrent Yes
Actors
Yes
Mvar, par,
STM
Performance!
Type System
Static
Inferred
Static
Inferred
Dynamic
Optional
Inferred++
Dynamic
Optional
Inferred++
Dynamic Static
Inferred++
Dynamic
Optional
Inferred++
Static
Inferred++
Compiled
vs
Interpreted
Compiled Compiled Interpreted Compiled
Interpreted Compiled Compiled Compiled
Self-hosted
Show me your code
Yes Yes No No
No Yes Yes Yes
Garbage-
Collection
Yes No Yes Yes
Yes Yes Yes Yes
Single File
Distribution
Yes Yes No No
No Yes Yes Yes
Ruby-like
Syntax
No No No No
Yes Yes Yes No
Parallel
Parallel
Typing
Parallel
Typing
Fast
So, what?
Expand Your Mind
“Ruby's OO model was
brain-expanding, and I was
seeking more brain-expanding
paradigms that would let me
think entirely new thoughts.”
Why did you learn a new language?
Joy
Domain
Tools
Where does
Ruby go?
“Rails is strangling Ruby. In the
same way that you don't quit
because of a bad company, you
quit because of a bad boss.”
Where does
Ruby go?
Parallel
Typing
Fast
“Ruby is the best language I
have used over my 30 years
programming. I hope Ruby 3
puts an end to the Ruby is
slow meme once and for all.”
“I really like Ruby for what it is,
and don't think 'adding a type
system' or something is the best
way to keep Ruby relevant. Don't
morph Ruby in to something
it's not.”
We’re all great!
Explore some new lands!
Enjoy Coding & Learning in whatever
language...
Tobias Pfeiffer
@PragTob
pragtob.info

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