go get github.com/afjoseph/whitestrings

package main

import (
        "fmt"

        "github.com/afjoseph/whitestrings"
)

func main() {
        // Result: 1.0
        fmt.Println(whitestrings.GetSimilarity("bunnyfoofoo", "bunnyfoofoo"))
        // Result: 0.5714285714285714
        fmt.Println(whitestrings.GetSimilarity("bunnyfoofoo", "bunny"))
        // Result: 0.9
        fmt.Println(whitestrings.GetSimilarity("bunnyfoofoo", "foofoobunny"))
        // Result: 0.9
        fmt.Println(whitestrings.GetSimilarity("bunnyfoofoo", "foobunnyfoo"))
}