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![–Alan Kay
I thought of objects being like biological cells
and/or individual
computers on a network, only able to
communicate with messages […].2
Hello, OOP.
2. http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht81Ht/doc_kay_oop_en](https://image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-22-2048.jpg)
![Hello, fizzbuzz.erl
-module(fizzbuzz).
-export([fizzbuzz/1]).
fizzbuzz(N) ->
Translations = lists:map(fun translate/1, lists:seq(1, N)),
lists:foreach(fun(Item) -> io:format("~s~n", [Item]) end, Translations).
translate(N) when N rem 3 =:= 0 andalso N rem 5 =:= 0 ->
'FizzBuzz';
translate(N) when N rem 3 =:= 0 ->
'Fizz';
translate(N) when N rem 5 =:= 0 ->
'Buzz';
translate(N) ->
integer_to_list(N).](https://image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-34-2048.jpg)
![Hello, fizzbuzz.lfe
(defmodule fizzbuzz
(export (fizzbuzz 1)))
(defun fizzbuzz (n)
(lists:foreach
(lambda (term) (lfe_io:format "~p~n" `(,term)))
(translate-upto n)))
(defun translate-upto (n)
(let ((numbers (lists:seq 1 n)))
(lists:map
(lambda (n) (translate n (rem n 3) (rem n 5)))
numbers)))
(defun translate
([_ 0 0] 'FizzBuzz)
([_ 0 _] 'Fizz)
([_ _ 0] 'Buzz)
([n _ _] n))](https://image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-36-2048.jpg)
![–Alan Kay
I thought of objects being like biological cells
and/or individual
computers on a network, only able to
communicate with messages […].2
Hello, OOP.
2. http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht81Ht/doc_kay_oop_en](https://crownmelresort.com/image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-22-2048.jpg)
![Hello, fizzbuzz.erl
-module(fizzbuzz).
-export([fizzbuzz/1]).
fizzbuzz(N) ->
Translations = lists:map(fun translate/1, lists:seq(1, N)),
lists:foreach(fun(Item) -> io:format("~s~n", [Item]) end, Translations).
translate(N) when N rem 3 =:= 0 andalso N rem 5 =:= 0 ->
'FizzBuzz';
translate(N) when N rem 3 =:= 0 ->
'Fizz';
translate(N) when N rem 5 =:= 0 ->
'Buzz';
translate(N) ->
integer_to_list(N).](https://crownmelresort.com/image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-34-2048.jpg)
![Hello, fizzbuzz.lfe
(defmodule fizzbuzz
(export (fizzbuzz 1)))
(defun fizzbuzz (n)
(lists:foreach
(lambda (term) (lfe_io:format "~p~n" `(,term)))
(translate-upto n)))
(defun translate-upto (n)
(let ((numbers (lists:seq 1 n)))
(lists:map
(lambda (n) (translate n (rem n 3) (rem n 5)))
numbers)))
(defun translate
([_ 0 0] 'FizzBuzz)
([_ 0 _] 'Fizz)
([_ _ 0] 'Buzz)
([n _ _] n))](https://crownmelresort.com/image.slidesharecdn.com/helloerlang-150820041906-lva1-app6891/75/Hello-Joe-Hello-Mike-Hello-Robert-36-2048.jpg)
Hello, Joe. Hello, Mike; Hello, Robert.
- 1. Hello, Joe. Hello,Mike; Hello, Robert.1 A Hello World Style Lighting Talk on Erlang. 1. From Erlang the Movie (https://archive.org/details/ErlangTheMovie)
- 2. Hello, Erlang. Erlang andOTP was designed for building distributed, asynchronous, highly-concurrent, fault tolerant applications with high availability.
- 3. Hello, Erlang. Erlang andOTP was designed for building distributed, asynchronous, highly-concurrent, fault tolerant applications with high availability. #BuzzwordBingo
- 4.
- 5. Hello, Telecom. • 100sof Thousands, if not Millions, of calls happen at the same time
- 6. Hello, Telecom. • 100sof Thousands, if not Millions, of calls happen at the same time • Your phone line has to always be available
- 7. Hello, Telecom. • 100sof Thousands, if not Millions, of calls happen at the same time • Your phone line has to always be available • My call cannot corrupt your call
- 8.
- 9. Hello, Déjà vu •Sound Familiar?
- 10.
- 11.
- 12. Hello, Failure. • Inthe Real World things fail. Embrace it.
- 13. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy
- 14. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy • Immutability
- 15. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy • Immutability • No Shared State
- 16. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy • Immutability • No Shared State • Isolated Processes Communicate Through Message Passing (Actor Model)
- 17. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy • Immutability • No Shared State • Isolated Processes Communicate Through Message Passing (Actor Model) • Supervision Hierarchy
- 18. Hello, Failure. • Inthe Real World things fail. Embrace it. • “Let It Crash” philosophy • Immutability • No Shared State • Isolated Processes Communicate Through Message Passing (Actor Model) • Supervision Hierarchy • Live code reloading
- 19.
- 20.
- 21.
- 22. –Alan Kay I thought of objects being like biological cells and/or individual computers on a network, only able to communicate with messages […].2 Hello,OOP. 2. http://userpage.fu-berlin.de/~ram/pub/pub_jf47ht81Ht/doc_kay_oop_en
- 23.
- 24. Hello, “Weaknesses”. • Nostrings as a data type
- 25. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types
- 26. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios
- 27. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs
- 28. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs • Not going to be run on your mobile device;
- 29. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs • Not going to be run on your mobile device; • but great for you mobile device backend.
- 30. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs • Not going to be run on your mobile device; • but great for you mobile device backend. • WhatsApp anyone?
- 31. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs • Not going to be run on your mobile device; • but great for you mobile device backend. • WhatsApp anyone? • Not insanely fast
- 32. Hello, “Weaknesses”. • Nostrings as a data type • List of Integers or Binary types • Not super performant for string manipulation, but good enough for most scenarios • Not great for GUIs • Not going to be run on your mobile device; • but great for you mobile device backend. • WhatsApp anyone? • Not insanely fast • "There's no such thing as fast, only fast enough" ~ Joe Armstrong
- 33.
- 34. Hello, fizzbuzz.erl -module(fizzbuzz). -export([fizzbuzz/1]). fizzbuzz(N) -> Translations= lists:map(fun translate/1, lists:seq(1, N)), lists:foreach(fun(Item) -> io:format("~s~n", [Item]) end, Translations). translate(N) when N rem 3 =:= 0 andalso N rem 5 =:= 0 -> 'FizzBuzz'; translate(N) when N rem 3 =:= 0 -> 'Fizz'; translate(N) when N rem 5 =:= 0 -> 'Buzz'; translate(N) -> integer_to_list(N).
- 35. Hello, fizzbuzz.ex defmodule FizzBuzzdo def fizzbuzz(n) do 1..n |> Enum.map(&translate/1) |> Enum.join("n") |> IO.puts end def translate(n) when rem(n, 3) == 0 and rem(n, 5) == 0, do: :FizzBuzz def translate(n) when rem(n, 3) == 0, do: :Fizz def translate(n) when rem(n, 5) == 0, do: :Buzz def translate(n), do: n end
- 36. Hello, fizzbuzz.lfe (defmodule fizzbuzz (export(fizzbuzz 1))) (defun fizzbuzz (n) (lists:foreach (lambda (term) (lfe_io:format "~p~n" `(,term))) (translate-upto n))) (defun translate-upto (n) (let ((numbers (lists:seq 1 n))) (lists:map (lambda (n) (translate n (rem n 3) (rem n 5))) numbers))) (defun translate ([_ 0 0] 'FizzBuzz) ([_ 0 _] 'Fizz) ([_ _ 0] 'Buzz) ([n _ _] n))
- 37.
- 38. Hello, Proctor. • http://www.proctor-it.com •@stevenproctor • steven.proctor@gmail.com • @fngeekery • http://www.functionalgeekery.com • @dfwerlang • http://www.meetup.com/DFW-Erlang-User-Group/ • @planeterlang • http://www.planeterlang.com