How to find a type of an object in Go?

Question

How do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?

Here is the container from which I am iterating:
for e := dlist.Front(); e != nil; e = e.Next() {
    lines := e.Value
    fmt.Printf(reflect.TypeOf(lines))
}

I am not able to get the type of the object lines in this case which is an array of strings.

Aditya Agrawal · Accepted Answer

To get a string representation: From http://golang.org/pkg/fmt/ %T a Go-syntax representation of the type of the value

Chris Gregori · Answer

I found 3 ways to return a variable's type at runtime: Using string formatting func typeof(v interface{}) string { return fmt.Sprintf("%T", v) } Using reflect package func typeof(v interface{}) string { return reflect.TypeOf(v).String() } Using type assertions func typeof(v interface{}) string { switch v.(type) { case int: return "int" case float64: return "float64" //... etc default: return "unknown" } } Every method has a different best use case: string formatting - short and low footprint (not necessary to import reflect package) reflect package - when need more details about the type we have access to the full reflection capabilities type assertions - allows grouping types, for example recognize all int32, int64, uint32, uint64 types as "int"

Go Language

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