go-anonymous-struct

Anonymous Struct in Go

tags: learning go programming

content

if err := resultsTemplate.Execute(w, struct {
	Results          google.Results
	Timeout, Elapsed time.Duration
}{
	Results: results,
	Timeout: timeout,
	Elapsed: elapsed,
}); err != nil {
	log.Print(err)
	return
}

breaking down this code:

• basic structure: if err := doSomething(); err != nil { handleErr }
• doSomething is tmpl.Execute(w, data)
• data is a struct
• the struct is an anonymous struct
• the above code is the same as below:

type TempStruct struct {
	Results google.Results
	Timeout time.Duration
	Elasped time.Duration
}
tempStruct := TempStruct {
	Results: results,
	Timeout: timeout,
	Elapsed: elapsed,
}
if err := tmpl.Execute(w, tempStruct); err != nil { }

up

• go-struct

down

reference

• Go Concurrency Patterns: Context - The Go Programming Language