jsa4000/getting-started-golang

Repository to learn the basics of the Go language

Getting-Started-Golang

Repository to learn the basics of the Go language

Install

• Download the Go binaris from the golang website

• Extract the content into a local folder

    tar -C /usr/local -xzf go1.11.4.linux-amd64.tar.gz
  

• Set the environment variable to include the go binaries

    vi $HOME/.profile:
    export PATH=$PATH:/usr/local/go/bin
  

• Force to update the new variables

    source $HOME/.profile
  

• Check the version installed

    go version
  

  $GOROOT variable is not necessary, just add the go executable into the binary path and set $GOPATH

• Tools to install (by vscode)

  • gocode
  • gopkgs
  • go-outline
  • go-symbols
  • guru
  • gorename
  • dlv
  • gocode-gomod
  • godef
  • goreturns
  • golint

Hello World

• Create your workspace directory, $HOME/go. (If you'd like to use a different directory, you will need to set the GOPATH environment variable.)

  • Edit your ~/.bash_profile to add the following line:

        export GOPATH=$HOME/go
    

  • Save and exit your editor. Then, source your ~/.bash_profile.

        source ~/.bash_profile
    

• Next, make the directory ~/go/src/github.com/src/helloworld inside your workspace, and in that directory create a file named main.go that looks like:

    ```go
    package main
  
    import "fmt"
  
    func main() {
        fmt.Printf("hello, world\n")
    }
    ```
  

• Then build it with the go tool:

    cd $HOME/go/src/github.com/src/helloworld
    go build
  

• The command above will build an executable named hello in the directory alongside your source code. Execute it to see the greeting:

    ./helloworld
  

• Or just run the file

    go run main.go
  
    # If there is more than one file in the folder user `*`
    go run *.fo