Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter02/recipe07.
2. Navigate to the directory.
3. Create the regexp.go file with the following content:

        package main        import (          "fmt"          "regexp"        )        const refString = `[{ \"email\": \"[e-mail]\" \                             "phone\": 555467890},                            { \"email\": \"[e-mail]\" \                             "phone\": 555467890}]`        func main() {          // This pattern is simplified for brevity          emailRegexp := regexp.MustCompile("[a-zA-Z0-9]{1,}                                             @[a-zA-Z0-9]{1,}\\.[a-z]{1,}")          first := emailRegexp.FindString(refString)          fmt.Println("First: ")          fmt.Println(first)          all := emailRegexp.FindAllString(refString, -1)          fmt.Println("All: ")          for _, val := range all {            fmt.Println(val)          }        }

4. Run the code by executing the go run regexp.go.
5. See the output in the Terminal: ...