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
Sponsored
·
Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
→
Elton Minetto
May 11, 2022
Programming
1
270
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
130
Developer productivity for fun and profit - Enterprise edition
eminetto
0
79
Criando Kubernetes Operators com o operator-sdk
eminetto
0
130
Developer productivity for fun and profit - Developer edition
eminetto
3
520
Observabilidade de APIs
eminetto
1
930
Reflexões sobre Design de Software
eminetto
1
480
Discussões sobre microsserviços
eminetto
0
120
Go, o que, por que e como?
eminetto
0
340
Dev Journey
eminetto
0
470
Other Decks in Programming
See All in Programming
ThorVG Viewer In VS Code
nors
0
750
Kotlin Multiplatform Meetup - Compose Multiplatform 외부 의존성 아키텍처 설계부터 운영까지
wisemuji
0
180
フロントエンド開発の勘所 -複数事業を経験して見えた判断軸の違い-
heimusu
7
2.7k
ZJIT: The Ruby 4 JIT Compiler / Ruby Release 30th Anniversary Party
k0kubun
1
380
Basic Architectures
denyspoltorak
0
630
Pythonではじめるオープンデータ分析〜書籍の紹介と書籍で紹介しきれなかった事例の紹介〜
welliving
3
850
React 19でつくる「気持ちいいUI」- 楽観的UIのすすめ
himorishige
11
5.8k
Implementation Patterns
denyspoltorak
0
270
AIエージェント、”どう作るか”で差は出るか? / AI Agents: Does the "How" Make a Difference?
rkaga
4
1.9k
Data-Centric Kaggle
isax1015
2
710
dchart: charts from deck markup
ajstarks
3
970
それ、本当に安全? ファイルアップロードで見落としがちなセキュリティリスクと対策
penpeen
7
2.4k
Featured
See All Featured
Effective software design: The role of men in debugging patriarchy in IT @ Voxxed Days AMS
baasie
0
210
Efficient Content Optimization with Google Search Console & Apps Script
katarinadahlin
PRO
0
300
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
31
9.9k
Taking LLMs out of the black box: A practical guide to human-in-the-loop distillation
inesmontani
PRO
3
2k
Leo the Paperboy
mayatellez
4
1.3k
AI: The stuff that nobody shows you
jnunemaker
PRO
2
200
How to audit for AI Accessibility on your Front & Back End
davetheseo
0
150
SEO in 2025: How to Prepare for the Future of Search
ipullrank
3
3.3k
GitHub's CSS Performance
jonrohan
1032
470k
How to optimise 3,500 product descriptions for ecommerce in one day using ChatGPT
katarinadahlin
PRO
0
3.4k
How to Align SEO within the Product Triangle To Get Buy-In & Support - #RIMC
aleyda
1
1.4k
Visual Storytelling: How to be a Superhuman Communicator
reverentgeek
2
420
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