Get a taste of Go

Today is the first day of Spring, time for something new.

Summary

• use Go to access the lab Postgres server running in Docker container
• save query to a csv file
• check out how testing works

Is Go, the Programming Language of the Cloud? You decide.

The code

Source code is on My github repo

I had to spend more time than I thought to figure out how to get nullable table column values. I had to do this to get a DECIMAL nullable value back:

func convert2str(v sql.NullFloat64) string {
	var strVal = ""
	if v.Valid {
		var tmpVal, err = v.Value()
		if err == nil {
			strVal = fmt.Sprintf("%f", tmpVal)
		}
	}
	return strVal
}

To run:

go run

to test:

go test

Good stuffs

• Go has built-in dependency management, build, testing, …,
• Short hand syntaxes = less typing
• Easy to learn