Finding the substring in a string

Finding the substring in a string is one of the most common tasks for developers. Most of the mainstream languages implement this in a standard library. Go is not an exception. This recipe describes the way Go implements this.

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"
       ...