04.4.md

eBook/examples/chapter_15/template_ifelse.go

@@ -0,0 +1,26 @@
+// template_ifelse.go
+package main
+
+import (
+	"os"
+	"text/template"
+)
+
+func main() {
+	tEmpty := template.New("template test")
+	tEmpty = template.Must(tEmpty.Parse("Empty pipeline if demo: {{if ``}} Will not print. {{end}}\n")) //empty pipeline following if
+	tEmpty.Execute(os.Stdout, nil)
+
+	tWithValue := template.New("template test")
+	tWithValue = template.Must(tWithValue.Parse("Non empty pipeline if demo: {{if `anything`}} Will print. {{end}}\n")) //non empty pipeline following if condition
+	tWithValue.Execute(os.Stdout, nil)
+
+	tIfElse := template.New("template test")
+	tIfElse = template.Must(tIfElse.Parse("if-else demo: {{if `anything`}} Print IF part. {{else}} Print ELSE part.{{end}}\n")) //non empty pipeline following if condition
+	tIfElse.Execute(os.Stdout, nil)
+}
+/* Output:
+Empty pipeline if demo: 
+Non empty pipeline if demo:  Will print. 
+if-else demo:  Print IF part. 
+*/