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"
-	"git.linuxhg.com/Go_Training/keyboard"
+	"trying_out_go/pkg/datafile"
+	"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

@@ -104,6 +104,24 @@ func main() {
 				magazineSubscribers()
 			},
 		},
+		{
+			name: "Fuel",
+			launchFunction: func() {
+				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/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 {
-			max = number
+		if number > maxNumber {
+			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

@@ -1,11 +1,9 @@
 module trying_out_go
 
-go 1.21.3
+go 1.21.5
 
 require (
-	git.linuxhg.com/Go_Training/datafile v0.0.0-20240111160218-6989e96515a9
-	git.linuxhg.com/Go_Training/keyboard v0.0.0-20240111160241-d208f095efce
-	github.com/charmbracelet/bubbles v0.17.1
+	github.com/charmbracelet/bubbles v0.18.0
 	github.com/charmbracelet/bubbletea v0.25.0
 	github.com/charmbracelet/lipgloss v0.9.1
 	github.com/dixonwille/wmenu/v5 v5.1.0
@@ -16,19 +14,19 @@ require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 // indirect
 	github.com/daviddengcn/go-colortext v1.0.0 // indirect
-	github.com/dixonwille/wlog/v3 v3.0.1 // indirect
+	github.com/dixonwille/wlog/v3 v3.0.4 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	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 v0.4.0 // indirect
-	golang.org/x/sys v0.13.0 // indirect
-	golang.org/x/term v0.13.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/term v0.16.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 )

go.sum

@@ -1,26 +1,24 @@
-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=
 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 v0.17.1/go.mod h1:9HxZWlkCqz2PRwsCbYl7a3KXvGzFaDHpYbSYMJ+nE3o=
+github.com/charmbracelet/bubbles v0.18.0 h1:PYv1A036luoBGroX6VWjQIE9Syf2Wby2oOl/39KLfy0=
+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=
 github.com/charmbracelet/lipgloss v0.9.1/go.mod h1:1mPmG4cxScwUQALAAnacHaigiiHB9Pmr+v1VEawJl6I=
 github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 h1:q2hJAaP1k2wIvVRd/hEHD7lacgqrCPS+k8g1MndzfWY=
 github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81/go.mod h1:YynlIjWYF8myEu6sdkwKIvGQq+cOckRm6So2avqoYAk=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/daviddengcn/go-colortext v0.0.0-20180409174941-186a3d44e920/go.mod h1:dv4zxwHi5C/8AeI+4gX4dCWOIvNi7I6JCSX0HvlKPgE=
 github.com/daviddengcn/go-colortext v1.0.0 h1:ANqDyC0ys6qCSvuEK7l3g5RaehL/Xck9EX8ATG8oKsE=
 github.com/daviddengcn/go-colortext v1.0.0/go.mod h1:zDqEI5NVUop5QPpVJUxE9UO10hRnmkD5G4Pmri9+m4c=
-github.com/dixonwille/wlog/v3 v3.0.1 h1:ViTSsNNndHlKW5S89x5O0KSTpTT9zdPqrkA/TZYY8+s=
 github.com/dixonwille/wlog/v3 v3.0.1/go.mod h1:fPYZR9Ne5gFh3N8b3CuXVWHWxkY6Yg1wCeS3Km6Nc0I=
+github.com/dixonwille/wlog/v3 v3.0.4 h1:YLV5QT+dVKunV/XdlsWlrbTAZp41Zq21lb3YI3KKfRw=
+github.com/dixonwille/wlog/v3 v3.0.4/go.mod h1:wh5luTpI/rczzuFeEjjLglEUkeGBIK1wZa2VTtpLkwY=
 github.com/dixonwille/wmenu/v5 v5.1.0 h1:sKBHDoQ945NRvK0Eitd0kHDYHl1IYOSr1sdCK9c+Qr0=
 github.com/dixonwille/wmenu/v5 v5.1.0/go.mod h1:l6EGfXHaN6DPgv5+V5RY+cydAXJsj/oDZVczcdukPzc=
 github.com/golangplus/bytes v0.0.0-20160111154220-45c989fe5450/go.mod h1:Bk6SMAONeMXrxql8uvOKuAZSu8aM5RUGv+1C6IJaEho=
@@ -35,8 +33,8 @@ github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+
 github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
 github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
-github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
-github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=
 github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
 github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
@@ -54,24 +52,31 @@ 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 v0.4.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.4.6 h1:Sovz9sDSwbOz9tgUy8JpT+KgCkPYJEN/oYzlJiYTNLg=
+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=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
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-golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
-golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
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+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
-golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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-golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
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 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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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
+}

votes.txt

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