53-text-templates.go

package main
import (
  "os"
  "text/template"
)

func main(){
  t1 := template.New("t1")
  t1, err := t1.Parse("Value is {{.}}\n")
  if err != nil {
    panic(err)
  }

  t1 = template.Must(t1.Parse("Value: {{.}}\n"))

  t1.Execute(os.Stdout, "some text")
  t1.Execute(os.Stdout, 5)
  t1.Execute(os.Stdout, []string{
    "Go",
    "Rust",
    "C++",
    "C#",
  })

  Create := func(name, t string) *template.Template {
    return template.Must(template.New(name).Parse(t))
  }

  t2 := Create("t2","Name: {{.Name}}\n")

  t2.Execute(os.Stdout, struct {
    Name string
  }{"Jane Doe"})

  t2.Execute(os.Stdout, map[string]string{
    "Name":"Mickey Mouse",
  })

  t3 := Create("t3",
    "{{if . -}} yes {{else -}} no {{end}}\n")
  t3.Execute(os.Stdout, "not empty")
  t3.Execute(os.Stdout, "")

  t4 := Create("t4",
    "Range: {{range .}}{{.}} {{end}}\n")
  t4.Execute(os.Stdout,
    []string{
      "Go",
      "Rust",
      "C++",
      "C#",
    })
}