define action demo golang template

defineActionDemo.go

package main

import (
	"fmt"
	"html/template"
	"os"
)

var defineDemo = `
{{ define "a" }} Template A {{ end }}
{{define "b"}} Template B {{end}}
`

func main() {
	var err error

	t := template.New("defineActionDemo")
	t, err = t.Parse(defineDemo)
	if err != nil {
		fmt.Println("parsing failed: %s", err)
	}

	err = t.ExecuteTemplate(os.Stdout, "a", nil)
	if err != nil {
		fmt.Println("execution failed: %s", err)
	}

	fmt.Println()
	err = t.ExecuteTemplate(os.Stdout, "b", nil)
	if err != nil {
		fmt.Println("execution failed: %s", err)
	}

}

output

c:\medium\src>go build defineActionDemo.go                                                                                                                                        
c:\medium\src>defineActionDemo                                                                                                                                        
 Template A                                                                                                                                                                 
 Template B