How to get the difference between two slices

[natenho]

Let's suppose I need to get all elements from A that don't appear in B slice (difference), but comparing only the name.

package main

import (
	"fmt"

	"github.com/wesovilabs/koazee"
)

type product struct {
	code int
	name string
}

var fruits1 = []*product{
	{code: 9, name: "apple"},
	{code: 4, name: "orange"},
	{code: 12, name: "lemon"},
}

var fruits2 = []*product{
	{code: 1000, name: "apple"}, // The code 1000 is intentional!! I need to compare only by name
}

func main() {
	stream := koazee.StreamOf(fruits1)	
	// ??
	
	stream.ForEach(func(p *product) {
		fmt.Printf("%d: \"%s\"\n", p.code, p.name)
	}).Do()
}

Should print

4: "orange"
12: "lemon

I'm trying to figure out a good way to do that using koazee.