How to do it...

1. Open the console and create the folder chapter02/recipe01.
2. Navigate to the directory.
3. Create the contains.go file with the following content:

        package main

        import (
          "fmt"
          "strings"
        )

        const refString = "Mary had a little lamb"

        func main() {

          lookFor := "lamb"
          contain := strings.Contains(refString, lookFor)
          fmt.Printf("The \"%s\" contains \"%s\": %t \n", refString,
                     lookFor, contain)

          lookFor = "wolf"
          contain = strings.Contains(refString, lookFor)
          fmt.Printf("The \"%s\" contains \"%s\": %t \n", refString,
                     lookFor, contain)

          startsWith := "Mary"
          starts := strings.HasPrefix(refString, startsWith)
          fmt.Printf("The \"%s\" starts with \"%s\": %t \n", refString, 
                     startsWith, starts)

          endWith := "lamb"
          ends := strings.HasSuffix(refString, endWith)
          fmt.Printf("The \"%s\" ends with \"%s\": %t \n", refString,
                     endWith, ends)

        }

1. Run the code by executing go run contains.go.
2. See the output in the Terminal: