operating-on-a-receiver-struct.go

package main

import "fmt"

type basket []produce
type produce struct {
	name    string
	flavour string
	kind    string
}

func (p *basket) add_item(entry produce) {
	*p = append(*p, entry)
	fmt.Printf("Entry %s created!\n", entry.name)
}

func (p basket) change_item(name string, entry produce) {
	for key, val := range p {
		if val.name == name {
			p[key] = entry
		}
	}

	fmt.Printf("Item %s changed!\n", name)
}

func (p basket) items() {
	fmt.Println("")
	fmt.Printf("There are %d number of items in the basket\n", len(p))
	fmt.Println("")

	for _, val := range p {
		fmt.Printf("Name: %s\nFlavour: %s\nKind: %s\n", val.name, val.flavour, val.kind)
		fmt.Println("")
	}
}

func main() {
	basket := new(basket)
	basket.add_item(
		produce{
			name:    "apple",
			flavour: "It's a little sour and bitter, but mostly sweet, not at all salty, very juicy in general.",
			kind:    "fruit",
		},
	)

	basket.add_item(
		produce{
			name:    "carrot",
			flavour: "",
			kind:    "veggies",
		},
	)

	basket.change_item("carrot",
		produce{
			name:    "cucumber",
			flavour: "Slightly bitter with a mild melon aroma and planty flavor.",
			kind:    "veggies",
		},
	)

	basket.items()
}

/*
Entry apple created!
Entry carrot created!
Item carrot changed!

There are 2 number of items in the basket

Name: apple
Flavour: It's a little sour and bitter, but mostly sweet, not at all salty, very juicy in general.
Kind: fruit

Name: cucumber
Flavour: Slightly bitter with a mild melon aroma and planty flavor.
Kind: veggies
*/