demo

Documentation

Overview

Package demo provides code examples used in the ../README.md

Index

• type FavWriter
  • func (d *FavWriter) Load(maxWeight uint32) (map[int]Widget, error)
  • func (d *FavWriter) WriteFavorites(nums []int) error
• type Gadget
• type IsFavorite
• type Store
• type Widget

Types

type FavWriter

type FavWriter struct {
	IsFav IsFavorite
	W     io.Writer
	Store Store
}

FavWriter is used to filter and write only favorite number

func (*FavWriter) Load

func (d *FavWriter) Load(maxWeight uint32) (map[int]Widget, error)

Load retrieves multiple Widget objects

func (*FavWriter) WriteFavorites

func (d *FavWriter) WriteFavorites(nums []int) error

WriteFavorites iterates through a given list of numbers and writes any favorite number to the given Writer

type Gadget

type Gadget struct {
	Id       int
	WidgetId int
	Color    string
	Weight   uint32
}

Gadget holds the state of a gadget

type IsFavorite

type IsFavorite func(n int) bool

IsFavorite is the function type for a function that determines if a number is a favorite

type Store

type Store interface {
	AllWidgetsIds() ([]int, error)
	GadgetsByWidgetId(widgetId int) ([]Gadget, error)
	LightGadgetsByWidgetId(widgetId int, maxWeight uint32) ([]Gadget, error)
}

Store is the abstraction for Widget and Gadget types

type Widget

type Widget struct {
	Id             int
	GadgetsByColor map[string]Gadget
}

Widget holds the state of a widget