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
Introdução a Go
Search
Elton Minetto
May 11, 2022
Programming
1
250
Introdução a Go
Nesta palestra faço uma introdução a linguagem Go
Elton Minetto
May 11, 2022
Tweet
Share
More Decks by Elton Minetto
See All by Elton Minetto
Criando Kubernetes Operators com o operator-sdk
eminetto
0
110
Developer productivity for fun and profit - Enterprise edition
eminetto
0
66
Criando Kubernetes Operators com o operator-sdk
eminetto
0
110
Developer productivity for fun and profit - Developer edition
eminetto
3
500
Observabilidade de APIs
eminetto
1
920
Reflexões sobre Design de Software
eminetto
1
460
Discussões sobre microsserviços
eminetto
0
110
Go, o que, por que e como?
eminetto
0
320
Dev Journey
eminetto
0
460
Other Decks in Programming
See All in Programming
Catch Up: Go Style Guide Update
andpad
0
160
非同期jobをtransaction内で 呼ぶなよ!絶対に呼ぶなよ!
alstrocrack
0
510
2025年版 サーバーレス Web アプリケーションの作り方
hayatow
23
25k
大規模アプリのDIフレームワーク刷新戦略 ~過去最大規模の並行開発を止めずにアプリ全体に導入するまで~
mot_techtalk
0
370
XP, Testing and ninja testing ZOZ5
m_seki
2
270
CSC509 Lecture 03
javiergs
PRO
0
330
タスクの特性や不確実性に応じた最適な作業スタイルの選択(ペアプロ・モブプロ・ソロプロ)と実践 / Optimal Work Style Selection: Pair, Mob, or Solo Programming.
honyanya
3
140
なぜGoのジェネリクスはこの形なのか? Featherweight Goが明かす設計の核心
ryotaros
7
1k
Go Conference 2025: Goで体感するMultipath TCP ― Go 1.24 時代の MPTCP Listener を理解する
takehaya
7
1.6k
PostgreSQLで手軽にDuckDBを使う!DuckDB&pg_duckdb入門/osk2025-duckdb
takahashiikki
1
240
LLMとPlaywright/reg-suitを活用した jQueryリファクタリングの実際
kinocoboy2
4
660
開発者への寄付をアプリ内課金として実装する時の気の使いどころ
ski
0
340
Featured
See All Featured
Navigating Team Friction
lara
189
15k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
46
7.6k
Why Our Code Smells
bkeepers
PRO
339
57k
Site-Speed That Sticks
csswizardry
11
880
Music & Morning Musume
bryan
46
6.8k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
45
2.5k
Fireside Chat
paigeccino
40
3.7k
Being A Developer After 40
akosma
91
590k
YesSQL, Process and Tooling at Scale
rocio
173
14k
GraphQLとの向き合い方2022年版
quramy
49
14k
Transcript
Introdução a Go
Elton Minetto ๏ Escrevo códigos, sou professor, palestrante, e escritor
๏ Escrevo no https://eltonminetto.dev e no twitter ๏ Sou Principal Software Engineer no PicPay
O que é?
Uma linguagem open source
None
Por que uma nova linguagem?
Muitos problemas com software em grande escala
Velocidade de compilação
Sistemas distribuídos Multicore
Objetivos
Semântica simples
Tipagem estática
Programação concorrente
Divertida!
TALK IS CHEAP, SHOW ME THE CODE!
Pacotes package main import ( "fmt" "math" ) func main()
{ fmt.Printf("Now you have %g problems.", math.Sqrt(7)) }
Resultados Múltiplos package main import "fmt" func swap(x, y string)
(string, string) { return y, x } func main() { a, b := swap("hello", "world") fmt.Println(a, b) }
Erros package main import "github.com/coderockr/nfe/transmitter" func main() { response, err
:= transmitter.transmit(nfe, xml) if err != nil { panic("Error ") //tratamento de erro qualquer } result, err := transmitter.saveData(response, xml) if err != nil { panic("Error ") //tratamento de erro qualquer } }
Goroutines package main import ( "fmt" "time" ) func say(s
string) { for i := 0; i < 5; i++ { time.Sleep(100 * time.Millisecond) fmt.Println(s) } } func main() { go say("world") say("hello") }
Canais package main import "fmt" func sum(s []int, c chan
int) { sum := 0 for _, v := range s { sum += v } c <- sum // send sum to c } func main() { s := []int{7, 2, 8, -9, 4, 0} c := make(chan int) go sum(s[:len(s)/2], c) go sum(s[len(s)/2:], c) x, y := <-c, <-c // receive from c fmt.Println(x, y, x+y) }
Cross Compilation GOOS=darwin GOARCH=amd64 go build gorotines.go GOOS=windows GOARCH=amd64 go
build gorotines.go GOOS=linux GOARCH=amd64 go build gorotines.go
OO via composição e não herança, biblioteca padrão poderosa, etc.
Quem está usando?
Google, Basecamp, Globo.com, Canonical, DigitalOcean, Dropbox, Github, Heroku, Medium, Docker,
MongoDB, Mozilla, Netflix, New Relic, New York Times, Resultados Digitais, Moip, Neoway, Walmart, Trybe, PicPay, etc https://github.com/golang/go/wiki/GoUsers
Aplicações
APIs
Microservices
IoT
Databases
CLIents
Material de estudo
Site oficial Tour Go, por onde começar? Livro: A Linguagem
de Programação Go Curso Desenvolvimento Web com Go Awesome Go
Contato
[email protected]
http://eltonminetto.dev http://twitter.com/eminetto