Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Why Elixir? (Intro to Elixir)
Search
Ventsislav Nikolov
May 22, 2017
Technology
2
150
Why Elixir? (Intro to Elixir)
A brief introduction of Elixir. Level: beginners.
Ventsislav Nikolov
May 22, 2017
Tweet
Share
More Decks by Ventsislav Nikolov
See All by Ventsislav Nikolov
Building Multiplayer Real-Time Game with Elixir and Phoenix
ventsislaf
4
2.4k
Other Decks in Technology
See All in Technology
アジャイルな開発チームでテスト戦略の話は誰がする? / Who Talks About Test Strategy?
ak1210
1
690
クラウド食堂とは?
hiyanger
0
120
AIエージェント時代のエンジニアになろう #jawsug #jawsdays2025 / 20250301 Agentic AI Engineering
yoshidashingo
8
4k
マーケットプレイス版Oracle WebCenter Content For OCI
oracle4engineer
PRO
3
540
AIエージェント元年@日本生成AIユーザ会
shukob
1
250
クラウド関連のインシデントケースを収集して見えてきたもの
lhazy
9
1.8k
データモデルYANGの処理系を再発明した話
tjmtrhs
0
210
20250304_赤煉瓦倉庫_DeepSeek_Deep_Dive
hiouchiy
2
120
技術スタックだけじゃない、業務ドメイン知識のオンボーディングも同じくらいの量が必要な話
niftycorp
PRO
0
120
JavaにおけるNull非許容性
skrb
2
2.7k
1行のコードから社会課題の解決へ: EMの探究、事業・技術・組織を紡ぐ実践知 / EM Conf 2025
9ma3r
12
4.4k
[OpsJAWS Meetup33 AIOps] Amazon Bedrockガードレールで守る安全なAI運用
akiratameto
1
130
Featured
See All Featured
The Illustrated Children's Guide to Kubernetes
chrisshort
48
49k
Stop Working from a Prison Cell
hatefulcrawdad
268
20k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
100
18k
How to Ace a Technical Interview
jacobian
276
23k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
33
2.1k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
280
13k
Code Reviewing Like a Champion
maltzj
521
39k
A designer walks into a library…
pauljervisheath
205
24k
Navigating Team Friction
lara
183
15k
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
28
9.3k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Build The Right Thing And Hit Your Dates
maggiecrowley
34
2.5k
Transcript
WHY ELIXIR? Elixir Sofia Meetup May 2017
WHY ELIXIR? INTRO TO ELIXIR
Ventsislav Nikolov @ventsislaf
DISCLAIMER NO GIFs
None
WHAT IS ELIXIR?
• functional programming language • compiles to erlang bytecode •
immutable data • dynamically typed • concurrency, distribution, fault tolerance • hot code swapping
DATA TYPES (NOT ALL) 1_000_000 # Integer 314159.0e-5 # Float
:apple # Atom "Jon Snow" # String {:error, 404} # Tuple [1, 2, 3] # (Linked) List %{name: "Jon", age: 21} # Map
MODULES AND FUNCTIONS
ANONYMOUS FUNCTIONS add = fn(a, b) -> a + b
end add.(2, 5) # => 7
MODULES defmodule Math do def add(a, b) do a +
b end defp multiply(a, b) do a * b end end # warning: function multiply/2 is unused Math.add(2, 5) # => 7 Math.multiply(2, 5) # ** (UndefinedFunctionError) function Math.multiply/2 is undefined or private
IMMUTABILITY
colors = ["green", "apple", "red"] List.delete(colors, "apple") # => ["green",
"red"] colors # => ["green", "apple", "red"]
PATTERN MATCHING
= x = 1 # => 1 1 = x
# => 1 2 = x # ** (MatchError) no match of right hand side value: 1 x = 2 # => 2
DECOMPOSITION [x, y] = [1, 2] # x => 1,
y => 2 [1, x] = [1, 2] # x => 2 [_, x] = [1, 2] # x => 2 [head | tail] = [1, 2, 3] # head => 1, tail => [2, 3] %{name: name} = %{name: "Jon Snow", age: 21} # name => "Jon Snow"
RECURSION
def sum([]) do 0 end def sum([head | tail]) do
head + sum(tail) end
PIPE OPERATOR
Enum.sort(String.codepoints(String.downcase(word)))
lowercase = String.downcase(word) chars = String.codepoints(lowercase) ordered = Enum.sort(chars)
word |> String.downcase() |> String.codepoints() |> Enum.sort()
Elixir + Erlang = ❤
# Erlang rand:uniform(10). # Elixir :rand.uniform(10)
CONCURRENCY
PROCESSES (not OS) spawn fn -> IO.puts "Hello from another
process" end
LIGHTWEIGHT • created for couple of microseconds • 1-2 KB
initial memory footprint • up to hundreds of millions processes per VM
ISOLATION name = "Jon Snow" spawn fn -> IO.puts "Hello,
#{name}" end
MESSAGES pid = spawn fn -> receive do msg ->
IO.puts "received a message: #{msg}" end end send pid, "You know nothing, Jon Snow."
msg 1 msg 2 msg 3 mailbox
FAULT TOLERANCE
:one_for_one :one_for_all
DISTRIBUTION
None
$ iex --name one@host $ iex --name two@host $ iex
--name three@host # in node one iex> Node.connect :two@host iex> Node.connect :three@host iex> Node.list # => [:two@host, :three@host] # in node two iex> Node.list # => [:one@host, :three@host] iex> Node.spawn :three@host, fn -> IO.puts("hello") end
TOOLING
IEx (demo) $ iex iex> 2 + 5 7
MIX mix new app_name mix compile mix test mix deps.get
mix hex.publish
OBSERVER :observer.start
None
WHERE TO GO NEXT?
None
None
None
None
THANK YOU!