Темплейты

package main

import (
    "fmt"
    "html/template"
    "net/http"
)

type Data struct {
    Name    string
    Hobbies []string
}

var tpl = `<h1>Hello from: {{ .Name }}</h1>
<hr>
<h3>Your hobbies are:</h3>
       {{$Hobbies := .Hobbies }}

       {{range $i, $hobby := $Hobbies}}
           <h4>Item [{{ $i }}]: {{ $hobby }}</h4>
       {{end}}
<hr>
<p>Пример использования</p>
`

func main() {
    http.HandleFunc("/", foo)
    fmt.Println("Listening on port: 8082....")
    http.ListenAndServe("localhost:8082", nil)
}

func foo(w http.ResponseWriter, r *http.Request) {
    data := &Data{"Ваши хоби", []string{"snowboarding", "programming","Чтение","Прочие","Красфорд"}}

    // step1
    tmpl, err := template.New("tpl").Parse(tpl)

    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }

    // step2
    if err := tmpl.Execute(w, *data); err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
    }
}