GoLand Spelling fixes

averageWithArgs/go.mod

@@ -1,3 +0,0 @@
-module averageWithArgs
-
-go 1.21.3

cmd/headFirstCodeMagnets/variadic.go

@@ -3,7 +3,7 @@ package main
 import "fmt"
 
 func sum(numbers ...int) int {
-	var sum int = 0
+	var sum = 0
 
 	for _, number := range numbers {
 		sum += number

cmd/playground/averageHeadFirstSolution.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"strings"
 
-	"git.linuxhg.com/Go_Training/datafile"
+	"trying_out_go/pkg/datafile"
-	"git.linuxhg.com/Go_Training/keyboard"
+	"trying_out_go/pkg/keyboard"
 )
 
 func averageHeadFirstSolution() {

cmd/playground/averageHeadFirstVariadic.go

@@ -14,7 +14,7 @@ func averageCalc(numbers ...float64) float64 {
 	return sum / float64(len(numbers))
 }
 
-func averageHeadFirstVariadic() {
+func main() {
 	arguments := os.Args[1:]
 	var numbers []float64
 	for _, argument := range arguments {
@@ -22,5 +22,5 @@ func averageHeadFirstVariadic() {
 		Error(err)
 		numbers = append(numbers, number)
 	}
-	fmt.Printf("Average: %0.2\n", averageCalc(numbers...))
+	fmt.Printf("Average: %0.2f\n", averageCalc(numbers...))
 }

cmd/playground/averageMySolution.go

@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"strings"
 
-	"git.linuxhg.com/Go_Training/keyboard"
+	"trying_out_go/pkg/keyboard"
 )
 
 func averageMySolution() {

cmd/playground/calendar.go

@@ -0,0 +1,24 @@
+// from chapter 10
+package main
+
+import (
+	"fmt"
+	"trying_out_go/pkg/calendar"
+)
+
+func companyCalendar() {
+	event := calendar.Event{}
+	err := event.SetTitle("Mom's Birthday")
+	Error(err)
+	err = event.SetYear(2019)
+	Error(err)
+	err = event.SetMonth(5)
+	Error(err)
+	err = event.SetDay(27)
+	Error(err)
+
+	fmt.Println(event.Title())
+	fmt.Println(event.Year())
+	fmt.Println(event.Month())
+	fmt.Println(event.Day())
+}

cmd/playground/countVotes.go

@@ -3,10 +3,10 @@ package main
 
 import (
 	"fmt"
-	"git.linuxhg.com/Go_Training/datafile"
-	"git.linuxhg.com/Go_Training/keyboard"
 	"sort"
 	"strings"
+	"trying_out_go/pkg/datafile"
+	"trying_out_go/pkg/keyboard"
 )
 
 func countVotes() {

cmd/playground/directory.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func scanDirectory(path string) {
+	fmt.Println(path)
+	files, err := os.ReadDir(path)
+	if err != nil {
+		panic(err)
+	}
+
+	for _, file := range files {
+		filePath := filepath.Join(path, file.Name())
+		if file.IsDir() {
+			scanDirectory(filePath)
+		} else {
+			fmt.Println(filePath)
+		}
+	}
+}
+
+func directory() {
+	scanDirectory("../../trying_out_go")
+}

cmd/playground/fuel.go

@@ -0,0 +1,66 @@
+// part of chapter 9
+
+package main
+
+import "fmt"
+
+type Liters float64
+
+func (l Liters) String() string {
+	return fmt.Sprintf("%0.2f L", l)
+}
+
+type Gallons float64
+
+func (g Gallons) String() string {
+	return fmt.Sprintf("%0.2f gal", g)
+}
+
+type Milliliters float64
+
+func (m Milliliters) String() string {
+	return fmt.Sprintf("%0.2f mL", m)
+}
+
+func (l Liters) ToGallons() Gallons {
+	return Gallons(l * 0.264)
+}
+
+func (m Milliliters) ToGallons() Gallons {
+	return Gallons(m * 0.000264)
+}
+
+func (g Gallons) ToLiters() Liters {
+	return Liters(g * 3.785)
+}
+
+func (g Gallons) ToMilliliters() Milliliters {
+	return Milliliters(g * 3785.41)
+}
+
+func fuel() {
+	// long version
+	//var carFuel Gallons
+	//var busFuel Liters
+	//carFuel = Gallons(10.0)
+	//busFuel = Liters(240.0)
+	// short version
+	soda := Liters(2)
+	fmt.Printf("%0.0f liters equals %0.3f gallons\n", soda, soda.ToGallons())
+	water := Milliliters(500)
+	fmt.Printf("%0.0f milliliters equals %0.3f gallons \n", water, water.ToGallons())
+	//carFuel := Gallons(10.0)
+	//busFuel := Liters(240.0)
+	//
+	////if you want to convert between types, save variable with correct calculation
+	//carFuel += ToGallons(Liters(40.0))
+	//busFuel += ToLiters(Gallons(30.0))
+	//fmt.Printf("Car Fuel: %0.1f gallons\n", carFuel)
+	//fmt.Printf("Bus Fuel: %0.1f liters\n", busFuel)
+	milk := Gallons(2)
+	fmt.Printf("%0.0f gallons equals %0.3f liters\n", milk, milk.ToLiters())
+	fmt.Printf("%0.0f gallons equals %0.3f milliliters\n", milk, milk.ToMilliliters())
+	fmt.Println(Gallons(12.09285934))
+	fmt.Println(Liters(12.09285934))
+	fmt.Println(Milliliters(12.09285934))
+}

cmd/playground/magazineSubscribers.go

@@ -3,7 +3,7 @@ package main
 
 import (
 	"fmt"
-	"git.linuxhg.com/Go_Training/magazine"
+	"trying_out_go/pkg/magazine"
 )
 
 func printInfo(s *magazine.Subscriber) {

cmd/playground/passfail.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"log"
 
-	"git.linuxhg.com/Go_Training/keyboard"
+	"trying_out_go/pkg/keyboard"
 )
 
 func passFail() {

cmd/playground/playground.go

@@ -110,6 +110,18 @@ func main() {
 				fuel()
 			},
 		},
+		{
+			name: "Calendar",
+			launchFunction: func() {
+				companyCalendar()
+			},
+		},
+		{
+			name: "Directory List",
+			launchFunction: func() {
+				directory()
+			},
+		},
 	}
 	menu := wmenu.NewMenu("Choose a program.")
 	menu.Action(func(opts []wmenu.Opt) error {

cmd/playground/shopping.go

@@ -51,7 +51,7 @@ func (m shoppingModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				m.cursor++
 			}
 
-			// The "enter" key and the spacebar (a literal space) toggle
+			// The "enter" key and the space bar (a literal space) toggle
 		// the selected state for the item that the cursor is pointing at.
 		case "enter", " ":
 			_, ok := m.selected[m.cursor]

cmd/playground/test.go

@@ -48,6 +48,7 @@ func (m testModel) View() string {
 }
 
 func terminalTest() {
+	//goland:noinspection SpellCheckingInspection,SpellCheckingInspection
 	items := []list.Item{
 		item{title: "Raspberry Pi’s", desc: "I have ’em all over my house"},
 		item{title: "Nutella", desc: "It's good on toast"},

cmd/playground/toCelsius.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"log"
 
-	"git.linuxhg.com/Go_Training/keyboard"
+	"trying_out_go/pkg/keyboard"
 )
 
 func toCelsius() {

cmd/playground/variadic.go

@@ -6,13 +6,13 @@ import (
 )
 
 func maximum(numbers ...float64) float64 {
-	max := math.Inf(-1)
+	maxNumber := math.Inf(-1)
 	for _, number := range numbers {
-		if number > max {
+		if number > maxNumber {
-			max = number
+			maxNumber = number
 		}
 	}
-	return max
+	return maxNumber
 }
 
 func inRange(min float64, max float64, numbers ...float64) []float64 {

cmd/playground/wallArea.go

@@ -5,15 +5,15 @@ import "fmt"
 func paintNeeded(width float64, height float64) (paintNeededCalculated float64, anError error) {
 	area := width * height
 	if width < 0.0 {
-		return 0, fmt.Errorf("a width of %0.2f is invalid.", width)
+		return 0, fmt.Errorf("a width of %0.2f is invalid", width)
 	}
 	if height < 0.0 {
-		return 0, fmt.Errorf("a height of %0.2f is invalid.", height)
+		return 0, fmt.Errorf("a height of %0.2f is invalid", height)
 	}
 	return area / 10.0, nil
 }
 
-func printListersNeeded(amount float64) {
+func printLitersNeeded(amount float64) {
 	fmt.Printf("%.2f liters needed\n", amount)
 }
 
@@ -23,21 +23,21 @@ func wallArea() {
 	if err != nil {
 		fmt.Println(err)
 	} else {
-		printListersNeeded(amount)
+		printLitersNeeded(amount)
 	}
 	total += amount
 	amount, err = paintNeeded(-5.2, 3.5)
 	if err != nil {
 		fmt.Println(err)
 	} else {
-		printListersNeeded(amount)
+		printLitersNeeded(amount)
 	}
 	total += amount
 	amount, err = paintNeeded(5.2, 5.0)
 	if err != nil {
 		fmt.Println(err)
 	} else {
-		printListersNeeded(amount)
+		printLitersNeeded(amount)
 	}
 	total += amount
 	fmt.Printf("Total: %.2f liters\n", total)

cmd/sum/sum.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+)
+
+func OpenFile(fileName string) (*os.File, error) {
+	fmt.Println("Opening", fileName)
+	return os.Open(fileName)
+}
+
+func CloseFile(file *os.File) {
+	fmt.Println("Closing file")
+	err := file.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func GetFloats(fileName string) ([]float64, error) {
+	var numbers []float64
+	file, err := OpenFile(fileName)
+	if err != nil {
+		return nil, err
+	}
+	defer CloseFile(file)
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		number, err := strconv.ParseFloat(scanner.Text(), 64)
+		if err != nil {
+			return nil, err
+		}
+		numbers = append(numbers, number)
+	}
+	if scanner.Err() != nil {
+		return nil, scanner.Err()
+	}
+	return numbers, nil
+}
+
+func main() {
+	numbers, err := GetFloats(os.Args[1])
+	if err != nil {
+		log.Fatal(err)
+	}
+	var sum float64 = 0
+	for _, number := range numbers {
+		sum += number
+	}
+	fmt.Printf("Sum: %0.2f\n", sum)
+}

go.mod

@@ -3,10 +3,7 @@ module trying_out_go
 go 1.21.5
 
 require (
-	git.linuxhg.com/Go_Training/datafile v0.0.0-20240111160218-6989e96515a9
+	github.com/charmbracelet/bubbles v0.18.0
-	git.linuxhg.com/Go_Training/keyboard v0.0.0-20240111160241-d208f095efce
-	git.linuxhg.com/Go_Training/magazine v0.0.0-20240112152452-7bd91fa7e6c2
-	github.com/charmbracelet/bubbles v0.17.1
 	github.com/charmbracelet/bubbletea v0.25.0
 	github.com/charmbracelet/lipgloss v0.9.1
 	github.com/dixonwille/wmenu/v5 v5.1.0
@@ -26,7 +23,7 @@ require (
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/reflow v0.3.0 // indirect
 	github.com/muesli/termenv v0.15.2 // indirect
-	github.com/rivo/uniseg v0.4.4 // indirect
+	github.com/rivo/uniseg v0.4.6 // indirect
 	github.com/sahilm/fuzzy v0.1.1-0.20230530133925-c48e322e2a8f // indirect
 	golang.org/x/sync v0.6.0 // indirect
 	golang.org/x/sys v0.16.0 // indirect

go.sum

@@ -1,19 +1,9 @@
-git.linuxhg.com/Go_Training/datafile v0.0.0-20240111160218-6989e96515a9 h1:jjPk3X9lZ6bZhsjBvEJUGyqfNalUDG0Lt5UvaPrKFtM=
-git.linuxhg.com/Go_Training/datafile v0.0.0-20240111160218-6989e96515a9/go.mod h1:iRnsnz7UZZtIhCX3KTblxBxtEuvPZ8MMi5GDWGIt+dw=
-git.linuxhg.com/Go_Training/keyboard v0.0.0-20240111160241-d208f095efce h1:S9raWDpQtH3at5D4Bm0bfnvPd3ATGGMuZ8eQMrLddFM=
-git.linuxhg.com/Go_Training/keyboard v0.0.0-20240111160241-d208f095efce/go.mod h1:K5mAqLMDPmhy6GwFinntpdt4ha3uuVlZ/WKH/hOtOXY=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240111162752-2b431f589215 h1:G95CQwU1Ni+VSgPH2yiWwI/e+r80j0i3kvthhgDTbsI=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240111162752-2b431f589215/go.mod h1:H9ZFFH+6JXVuh3lnMJu6Nsr7c+gIi8f1dowZNeXJ0b8=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240111171405-a42dd8b99dd0 h1:EvXU4Pjkf3iDQgpVIw0YbLZ9ri9YCP3FcbT3C5Uuc2E=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240111171405-a42dd8b99dd0/go.mod h1:H9ZFFH+6JXVuh3lnMJu6Nsr7c+gIi8f1dowZNeXJ0b8=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240112152452-7bd91fa7e6c2 h1:P0nAtf/NM7J/lk0YwuE1nESGMYyEnbiv2VXPHTvbxYw=
-git.linuxhg.com/Go_Training/magazine v0.0.0-20240112152452-7bd91fa7e6c2/go.mod h1:H9ZFFH+6JXVuh3lnMJu6Nsr7c+gIi8f1dowZNeXJ0b8=
 github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=
 github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
-github.com/charmbracelet/bubbles v0.17.1 h1:0SIyjOnkrsfDo88YvPgAWvZMwXe26TP6drRvmkjyUu4=
+github.com/charmbracelet/bubbles v0.18.0 h1:PYv1A036luoBGroX6VWjQIE9Syf2Wby2oOl/39KLfy0=
-github.com/charmbracelet/bubbles v0.17.1/go.mod h1:9HxZWlkCqz2PRwsCbYl7a3KXvGzFaDHpYbSYMJ+nE3o=
+github.com/charmbracelet/bubbles v0.18.0/go.mod h1:08qhZhtIwzgrtBjAcJnij1t1H0ZRjwHyGsy6AL11PSw=
 github.com/charmbracelet/bubbletea v0.25.0 h1:bAfwk7jRz7FKFl9RzlIULPkStffg5k6pNt5dywy4TcM=
 github.com/charmbracelet/bubbletea v0.25.0/go.mod h1:EN3QDR1T5ZdWmdfDzYcqOCAps45+QIJbLOBxmVNWNNg=
 github.com/charmbracelet/lipgloss v0.9.1 h1:PNyd3jvaJbg4jRHKWXnCj1akQm4rh8dbEzN1p/u1KWg=
@@ -62,8 +52,8 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
-github.com/rivo/uniseg v0.4.4 h1:8TfxU8dW6PdqD27gjM8MVNuicgxIjxpm4K7x4jp8sis=
+github.com/rivo/uniseg v0.4.6 h1:Sovz9sDSwbOz9tgUy8JpT+KgCkPYJEN/oYzlJiYTNLg=
-github.com/rivo/uniseg v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.6/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/sahilm/fuzzy v0.1.1-0.20230530133925-c48e322e2a8f h1:MvTmaQdww/z0Q4wrYjDSCcZ78NoftLQyHBSLW/Cx79Y=
 github.com/sahilm/fuzzy v0.1.1-0.20230530133925-c48e322e2a8f/go.mod h1:VFvziUEIMCrT6A6tw2RFIXPXXmzXbOsSHF0DOI8ZK9Y=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=

pkg/calendar/date.go

@@ -0,0 +1,56 @@
+package calendar
+
+import "errors"
+
+// Date Struct
+type Date struct {
+	year  int
+	month int
+	day   int
+}
+
+// Setter Methods
+
+// SetYear Method
+func (d *Date) SetYear(year int) error {
+	if year < 1 {
+		return errors.New("invalid year")
+	}
+	d.year = year
+	return nil
+}
+
+// SetMonth Method
+func (d *Date) SetMonth(month int) error {
+	if month < 1 || month > 12 {
+		return errors.New("invalid month")
+	}
+	d.month = month
+	return nil
+}
+
+// SetDay Method
+func (d *Date) SetDay(day int) error {
+	if day < 1 || day > 31 {
+		return errors.New("invalid day")
+	}
+	d.day = day
+	return nil
+}
+
+// Getter Methods
+
+// Year Method
+func (d *Date) Year() int {
+	return d.year
+}
+
+// Month Method
+func (d *Date) Month() int {
+	return d.month
+}
+
+// Day Method
+func (d *Date) Day() int {
+	return d.day
+}

pkg/calendar/event.go

@@ -0,0 +1,23 @@
+package calendar
+
+import (
+	"errors"
+	"unicode/utf8"
+)
+
+type Event struct {
+	title string
+	Date
+}
+
+func (e *Event) Title() string {
+	return e.title
+}
+
+func (e *Event) SetTitle(title string) error {
+	if utf8.RuneCountInString(title) > 32 {
+		return errors.New("invalid title length")
+	}
+	e.title = title
+	return nil
+}

pkg/datafile/floats.go

@@ -0,0 +1,32 @@
+package datafile
+
+import (
+	"bufio"
+	"os"
+	"strconv"
+)
+
+// GetFloats reads a float64 from each line of a file.
+func GetFloats(fileName string) ([]float64, error) {
+	var numbers []float64
+	file, err := os.Open(fileName)
+	if err != nil {
+		return nil, err
+	}
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		number, err := strconv.ParseFloat(scanner.Text(), 64)
+		if err != nil {
+			return nil, err
+		}
+		numbers = append(numbers, number)
+	}
+	err = file.Close()
+	if err != nil {
+		return nil, err
+	}
+	if scanner.Err() != nil {
+		return numbers, scanner.Err()
+	}
+	return numbers, nil
+}

pkg/datafile/strings.go

@@ -0,0 +1,31 @@
+package datafile
+
+import (
+	"bufio"
+	"os"
+)
+
+func GetStrings(filename string) ([]string, error) {
+	var lines []string
+	file, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		lines = append(lines, line)
+	}
+
+	err = file.Close()
+	if err != nil {
+		return nil, err
+	}
+
+	if scanner.Err() != nil {
+		return nil, scanner.Err()
+	}
+
+	return lines, nil
+}

pkg/date/date.go

@@ -0,0 +1,56 @@
+package calendar
+
+import "errors"
+
+// Date Struct
+type Date struct {
+	year  int
+	month int
+	day   int
+}
+
+// Setter Methods
+
+// SetYear Method
+func (d *Date) SetYear(year int) error {
+	if year < 1 {
+		return errors.New("invalid year")
+	}
+	d.year = year
+	return nil
+}
+
+// SetMonth Method
+func (d *Date) SetMonth(month int) error {
+	if month < 1 || month > 12 {
+		return errors.New("invalid month")
+	}
+	d.month = month
+	return nil
+}
+
+// SetDay Method
+func (d *Date) SetDay(day int) error {
+	if day < 1 || day > 31 {
+		return errors.New("invalid day")
+	}
+	d.day = day
+	return nil
+}
+
+// Getter Methods
+
+// Year Method
+func (d *Date) Year() int {
+	return d.year
+}
+
+// Month Method
+func (d *Date) Month() int {
+	return d.month
+}
+
+// Day Method
+func (d *Date) Day() int {
+	return d.day
+}

pkg/date/event.go

@@ -0,0 +1,23 @@
+package calendar
+
+import (
+	"errors"
+	"unicode/utf8"
+)
+
+type Event struct {
+	title string
+	Date
+}
+
+func (e *Event) Title() string {
+	return e.title
+}
+
+func (e *Event) SetTitle(title string) error {
+	if utf8.RuneCountInString(title) > 32 {
+		return errors.New("invalid title length")
+	}
+	e.title = title
+	return nil
+}

pkg/gadget/program.go

@@ -0,0 +1,33 @@
+package main
+
+type Player interface {
+	Play(string)
+	Stop()
+}
+
+func TryOut(player Player) {
+	player.Play("Test Track")
+	player.Stop()
+	recorder, ok := player.(TapeRecorder)
+	if ok {
+		recorder.Record()
+	}
+}
+
+func playList(device Player, songs []string) {
+	for _, song := range songs {
+		device.Play(song)
+	}
+
+	device.Stop()
+}
+
+func main() {
+	mixTape := []string{"Jessie's Girl", "Whip It", "9 to 5"}
+	var player Player = TapePlayer{}
+	playList(player, mixTape)
+	player = TapeRecorder{}
+	playList(player, mixTape)
+	TryOut(TapeRecorder{})
+	TryOut(TapePlayer{})
+}

pkg/gadget/tape.go

@@ -0,0 +1,31 @@
+package main
+
+import "fmt"
+
+type TapePlayer struct {
+	Batteries string
+}
+
+func (t TapePlayer) Play(song string) {
+	fmt.Println("Playing", song)
+}
+
+func (t TapePlayer) Stop() {
+	fmt.Println("Stopped")
+}
+
+type TapeRecorder struct {
+	Microphone int
+}
+
+func (t TapeRecorder) Play(song string) {
+	fmt.Println("Playing", song)
+}
+
+func (t TapeRecorder) Record() {
+	fmt.Println("Recording")
+}
+
+func (t TapeRecorder) Stop() {
+	fmt.Println("Stopped")
+}

pkg/keyboard/keyboard.go

@@ -0,0 +1,38 @@
+// Package keyboard reads user input from the keyboard.
+package keyboard
+
+import (
+	"bufio"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// GetString reads a string from the keyboard.
+// It returns the string read and any error encountered.
+func GetString() (string, error) {
+	reader := bufio.NewReader(os.Stdin)
+	input, err := reader.ReadString('\n')
+	if err != nil {
+		return "", err
+	}
+
+	return input, nil
+}
+
+// GetFloat reads a floating-point number from the keyboard.
+// It returns the number read and any error encountered.
+func GetFloat() (float64, error) {
+	input, err := GetString()
+	if err != nil {
+		return 0, err
+	}
+
+	input = strings.TrimSpace(input)
+	number, err := strconv.ParseFloat(input, 64)
+	if err != nil {
+		return 0, err
+	}
+
+	return number, nil
+}

pkg/magazine/types.go

@@ -0,0 +1,21 @@
+package magazine
+
+type Subscriber struct {
+	Name   string
+	Rate   float64
+	Active bool
+	Address
+}
+
+type Employee struct {
+	Name   string
+	Salary float64
+	Address
+}
+
+type Address struct {
+	Street     string
+	City       string
+	State      string
+	PostalCode string
+}

playground/fuel.go

@@ -1,16 +0,0 @@
-// part of chapter 9
-
-package main
-
-import "fmt"
-
-type Liters float64
-type Gallons float64
-
-func fuel() {
-	var carFuel Gallons
-	var busFuel Liters
-	carFuel = Gallons(10.0)
-	busFuel = Liters(240.0)
-	fmt.Println(carFuel, busFuel)
-}

votes.txt

@@ -93,5 +93,5 @@ Brian Martin
 Amber Graham
 Brian Martin
 Amber Graham
-Carloz Diaz
+Carlos Diaz
 Silly name