package main
import (
"log"
"os"
"text/template"
)
type UserTweets struct {
User string
Tweets []string
}
const tmplStr = `
{{- if not .Tweets -}}
User '{{.User}}' has no tweets.
{{ else -}}
User '{{.User}}' has {{ len .Tweets }} tweets:
{{ range .Tweets -}}
'{{ . }}'
{{ end }}
{{- end}}`
func main() {
t := template.Must(template.New("if").Parse(tmplStr))
data := UserTweets{
User: "kjk",
}
err := t.Execute(os.Stdout, data)
if err != nil {
log.Fatalf("t.Execute() failed with '%s'\n", err)
}
data = UserTweets{
User: "masa",
Tweets: []string{"tweet one", "tweet two"},
}
err = t.Execute(os.Stdout, data)
if err != nil {
log.Fatalf("t.Execute() failed with '%s'\n", err)
}
}
