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
OOP in Elixir
Search
Wojtek Mach
February 17, 2016
4
300
OOP in Elixir
Wojtek Mach
February 17, 2016
Tweet
Share
More Decks by Wojtek Mach
See All by Wojtek Mach
Writing an Ecto Adapter: Introducing MyXQL
wojtekmach
1
140
Hex Core
wojtekmach
0
140
Recurrences & Intervals
wojtekmach
2
450
Building an Umbrella Project
wojtekmach
21
5.9k
Advanced OOP in Elixir
wojtekmach
6
640
Pattern Matching
wojtekmach
1
300
Formatting ruby code
wojtekmach
0
120
Featured
See All Featured
Measuring & Analyzing Core Web Vitals
bluesmoon
8
540
Into the Great Unknown - MozCon
thekraken
40
2k
Reflections from 52 weeks, 52 projects
jeffersonlam
351
21k
4 Signs Your Business is Dying
shpigford
184
22k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
How GitHub (no longer) Works
holman
314
140k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
8
430
Embracing the Ebb and Flow
colly
86
4.8k
Practical Orchestrator
shlominoach
190
11k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
15
1.6k
Building a Modern Day E-commerce SEO Strategy
aleyda
43
7.4k
Transcript
OOP in Elixir Wojtek Mach
defmodule Person do defstruct [:name] end joe = %Person{name: "Joe"}
robert = %Person{name: "Robert"} joe.name # => "Joe" robert.name # => "Robert"
defmodule Person do defstruct [:name] def say_hello_to(from, to) do IO.puts("#{from.name}:
Hello, #{to.name}") end end joe = %Person{name: "Joe"} robert = %Person{name: "Robert"} joe.name # => "Joe" robert.name # => "Robert" Person.say_hello_to(joe, robert) # => Joe: Hello, Robert
None
import OOP
import OOP class Person do var :name end
import OOP class Person do var :name end joe =
Person.new(name: "Joe") robert = Person.new(name: "Robert")
import OOP class Person do var :name end joe =
Person.new(name: "Joe") robert = Person.new(name: "Robert") joe.name() # => "Joe" robert.name # => "Robert"
import OOP class Person do var :name def say_hello_to(who) do
IO.puts("#{this.name}: #{who.name}") end end joe = Person.new(name: "Joe") robert = Person.new(name: "Robert") joe.name() # => "Joe" robert.name # => "Robert" joe.say_hello_to(robert) # => Joe: Hello, Robert
import class var def end end joe robert joe.name() #
=> "Joe" robert.name # => "Robert" joe.say_hello_to(robert) # => Joe: Hello, Robert this.name
joe = Person.new(name: "Joe") joe.set_name("Hipster Joe") # => :ok joe.name
# => "Hipster Joe"
Q: How does it work?
Q: How does it work? A: You don’t want to
know.
Q: How does it work? A: Macros.
Perhaps it’s not that bad…
Q: What’s worse than OOP?
Q: What’s worse than OOP? A: OOP with inheritance.
import OOP class Human do var :name end
import OOP class Human do var :name end class Doctor
< Human do end
import OOP class Human do var :name end class Doctor
< Human do def title do "Dr. #{name}" end end
import OOP class Human do var :name end class Doctor
< Human do def title do "Dr. #{name}" end end dr = Doctor.new(name: "Jekyll") dr.title # => "Dr. Jekyll"
Perhaps it’s not that bad…
Q: What’s worse than OOP with inheritance?
Q: What’s worse than OOP with inheritance? A: OOP with
multiple inheritance.
import OOP class Human do end
import OOP class Human do end class Spider do end
import OOP class Human do end class Spider do end
class Spiderman < [Human, Spider] do end
Elixir Guidelines
Q: What’s the 1st rule of writing macros? Elixir Guidelines
Q: What’s the 1st rule of writing macros? A: Don’t
write macros. Elixir Guidelines
Q: What’s the 1st rule of doing OOP in Elixir?
Elixir Guidelines
Q: What’s the 1st rule of doing OOP in Elixir?
A: Don’t do OOP in Elixir. Elixir Guidelines
None
• Elixir is powerful
• Elixir is powerful • DSLs, abstractions, semantics
• Elixir is powerful • DSLs, abstractions, semantics • Complexity
• Elixir is powerful • DSLs, abstractions, semantics • Complexity
• Simplicty
Thank you! @wojtekmach wojtekmach/oop