hello-go

README

Hello Go!

Example of the talk https://t3easy.github.io/talks/go-fundamentals/

1. go mod init github.com/t3easy/hello-go
   

2. Add main.go and run it

   go run main.go
   

3. Add test and run it

   go test ./...
   

4. Install cobra-cli

   go install github.com/spf13/cobra-cli@latest
   

5. Rename main.go, to temp.go
6. Init module with cobra-cli

   ~/go/bin/cobra-cli init
   

7. Add functionality of previous main.go to cmd/root.go,
   move main_test.go to cmd/root_test.go
8. Test and run

   go test ./...
   go run main.go
   

9. Add --name parameter that defaults to Go
10. Module housekeeping

    go mod tidy
    

11. Add serve command and run it

    ~/go/bin/cobra-cli add serve
    go run main.go serve
    

12. Move getMessage function to github.com/t3easy/hello-go/internal with capital G! As we will need it in the serve cmd, too. Run tests to check if nothing is broken.

    go test ./...
    go run main.go --name FooBar
    

13. Add http server for the "API"

    go run main.go serve
    

    Open http://127.0.0.1:4242/
    Open http://127.0.0.1:4242/FooBar
14. Add --port flag to serve command
15. Build binary

    go build -o bin
    

Documentation

Overview

Copyright © 2022 Jan Kiesewetter <jan@t3easy.de>

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.