Notes

Exp-8
package main
import (
"html/template"
"net/http"
)
type ContactDetails struct {
Email string
Subject string
Message string
}
func main() {
tmpl := template.Must(template.ParseFiles("forms.html"))
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request)
{
if r.Method != http.MethodPost {
tmpl.Execute(w, nil)
return
}
details := ContactDetails{
Email: r.FormValue("email"),
Subject: r.FormValue("subject"),
Message: r.FormValue("message"),
}
// do something with details
_ = details
tmpl.Execute(w, struct{ Success bool }{true})
})
http.ListenAndServe(":8080", nil)
}
<!-- forms.html -->
{{if .Success}}
<h1>Thanks for your message!</h1>
{{else}}
<h1>Contact</h1>
<form method="POST">
<label>Email:</label><br />
<input type="text" name="email"><br />
<label>Subject:</label><br />
<input type="text" name="subject"><br />
<label>Message:</label><br />
<textarea name="message"></textarea><br />
<input type="submit">
</form>
{{end}}

Exp-9
package main
import "fmt"
func main(){
var num[100] int
var temp,sum,avg int
fmt.Print("Enter number of elements: ")
fmt.Scanln(&temp)
for i := 0; i < temp; i++ {
fmt.Print("Enter the number : ")
fmt.Scanln(&num[i])
sum += num[i]
}
avg = sum/temp
fmt.Printf("The Average of entered %d number(s) is
%d",temp,avg)
}

Exp-10
package main
import "fmt"

// function to remove duplicate values
func removeDuplicates(s []string) []string {
bucket := make(map[string]bool)
var result []string
for _, str := range s {
if _, ok := bucket[str]; !ok {
bucket[str] = true
result = append(result, str)
}
}
return result
}
func main() {

// creating an array of strings
array := []string{"abc", "cde", "efg", "efg", "abc", "cde"}
fmt.Println("The given array of string is:", array)
fmt.Println()

// calling the function
result := removeDuplicates(array)
fmt.Println("The array obtained after removing the duplicate entries is:", result)
}

Exp 11
package main
import (
"fmt"
"sort"
)
func main() {
fmt.Println("Interger Reverse Sort")
num := []int{50,90, 30, 10, 50}
sort.Sort(sort.Reverse(sort.IntSlice(num)))
fmt.Println(num)
fmt.Println()
fmt.Println("String Reverse Sort")
text := []string{"Japan","UK","Germany","Australia","Pakistan"}
sort.Sort(sort.Reverse(sort.StringSlice(text)))
fmt.Println(text)
}

Exp12
Package main
import (
"fmt"
"strings"
)
func main() {
fmt.Println(strings.ContainsAny("Germany", "G"))
fmt.Println(strings.ContainsAny("Germany", "g"))
fmt.Println(strings.Contains("Germany", "Ger"))
fmt.Println(strings.Contains("Germany", "ger"))
fmt.Println(strings.Contains("Germany", "er"))
fmt.Println(strings.Count("cheese", "e"))
fmt.Println(strings.EqualFold("Cat", "cAt"))
fmt.Println(strings.EqualFold("India", "Indiana"))
}