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![Tuples {:ok, “some content}
Linked Lists [1,2,3,4]
Maps %{:key => value} #Rails gedan! iex> hd(list) #1
iex> tl(list) #[2,3,4]
Collection types](https://image.slidesharecdn.com/3nrsw1oxrnav7hna2fbr-signature-5c04086baf0345d8b7e44967de0d17a84e25381b2f19c1d99ec44c479c80e185-poli-180527072312/85/Elixir-introduction-10-320.jpg)
![X = 10 #bind x
10 = x #pattern match x to 10
[a, b, c] = [1, 2, 3]
[_, _, c] = [1, 2, 3]
def greet(%{name: username}) do
IO.puts "Hello, " <> username
end
user = %{name: "Tom", age: 23}
Pattern Matching](https://image.slidesharecdn.com/3nrsw1oxrnav7hna2fbr-signature-5c04086baf0345d8b7e44967de0d17a84e25381b2f19c1d99ec44c479c80e185-poli-180527072312/85/Elixir-introduction-12-320.jpg)
Uploaded byAl Sayed Gamal
Elixir introduction
This presentation introduces Elixir programming. It discusses that Elixir is a functional programming language that runs on the Erlang VM, which provides features like concurrency, fault tolerance, and distribution. It also highlights some key Elixir concepts like higher order functions, pattern matching, and OTP for building robust applications. Examples are provided to demonstrate defining a module, spawning processes, and working with basic data types in Elixir.
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Elixir introduction
- 1. This presentation is broughtto you by CAT
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- 3. AlSayed Gamal Lead architect@ Cognitev ! At Cognitev we make the internet a better place by putting advertising on auto-pilot! We are hiring!
- 4. What’s elixir? - Functionalprogramming ? - Running on Erlang VM ? Why should I care ? - Supervisor, Actor, OTP And more.. - Aimed for concurrent application. Interesting Fact! At least 50% of your phone calls are routed through erlang service!
- 6. Erlang Functional Programming. (Where functionsare first class citizen) ● Higher order functions, Currying, Closure.. ● Better to test ● Utilizes multi-core CPUs ● OTP, Supervisor Hot-code swapping, fault-tolerance. Fact Elixir isn’t the only functional programming language. Scala, haskel and lisp are example for famous functional programming languages.
- 7. What’s wrong withthe OOP? - Not every problem is a nail not every solution is a hammer. - Great OOP communities are migrating to functional programming paradigm through languages that are compatible or close in syntax. - Examples: F#, Scala, and kotlin
- 8. defmodule Greeter do defgreet(name) do message = "Hello, " <> name <> "!" IO.puts message end end Greeter.greet("world") $ elixir hello.exs $ iex iex> Complex hello, world!
- 9. Floats 3.14 Ints 100 Atoms:i_am_special_string Ranges 1..10 #range from 1 to 10 Regex ~r{Gama{1,4}l} Charlist ‘hello’ Binary String “hello” iex> ?a iex> ? أ Value types
- 10. Tuples {:ok, “somecontent} Linked Lists [1,2,3,4] Maps %{:key => value} #Rails gedan! iex> hd(list) #1 iex> tl(list) #[2,3,4] Collection types
- 11. PIDs: Node.spawn referenceto local or remote process. Ports: simply reference to a port iex> Node.spawn_link :"foo@computer-name", fn -> Hello.world end #PID<9014.59.0> System Types
- 12. X = 10#bind x 10 = x #pattern match x to 10 [a, b, c] = [1, 2, 3] [_, _, c] = [1, 2, 3] def greet(%{name: username}) do IO.puts "Hello, " <> username end user = %{name: "Tom", age: 23} Pattern Matching
- 13. Node1 > on/home/gamal/node1 Node2 > on /home/gamal/node2 What if Node1 wants to spawn some process to run in the context of Node2? iex> Node.list iex> Node.connect :”node_1@Gamalenovo” iex> Node.ping :”node_1@Gamalenovo” iex> Node.spawn(:"node_2@Gamalenovo", func) Hello, Distributed computing!
- 14. ● Phoenix ○ Web-frameworkthat’s heavily inspired by rails. ● OTP ○ It’s not about telecom. ○ It’s about telecom’s high- availability and fault-tolerance Supervisor in action! WHat’s next ?
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