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go_introduction's Introduction

GO Hands On

Dia 01

Golang

  • Go é uma linguagem de alto nível Garbage collected
  • É rápida, intuitiva e fácil de utilizar

Go vs Outras linguagens

  • Go não possui operador ternário
  • Go não possui list comprehenssion
  • Go possui apenas uma forma de loop: for
  • Go é uma linguagem com tipagem estática
  • Go possui uma API de testes nativa

Comandos fundamentais

  1. Iniciar um novo projeto
go mod init <nome do projeto>
  1. Atualizar dependências
go mod tidy
  1. Rodar uma aplicação ou arquivo
# Roda aplicação e procura o package main
go run .

# Roda arquivo específico
go run file.go
  1. Build -> criar binário da aplicação
go build -o <path/arquivo de output>
  1. Build para outras plataformas é necessário alterar ou setar variável de ambiente
    GOOS = Go OS
    GOARCH = arquitetura da máquina
# Win
GOOS=windows GOARCH=386 go build -o binario.exe

# Linux
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o binario
  1. Adicionar lib ao projeto
go get <endereço da lib>
  1. Instala um binário Go
go install <endereço da lib>

Variáveis

Funções

Loop

Struct

Referências

Go PlayGround
https://go.dev/play/

Standard lib
https://pkg.go.dev/std

TDD With Go
https://larien.gitbook.io/aprenda-go-com-testes/

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