How do you extract a value out of a golang map[string] string thats typed with interface{}

Question

I have something like this:

x1 := someFunctionWithAnInterfaceReturnValue()

and the underlying type is something like this:

x2 := map[string] string{"hello": "world"}

How would I access value in x1?

Essentially I want the equivalent of this for x1:

 var value string = x2["hello"]

score 1 · Accepted Answer · answered Jan 22 '19 at 17:13

1

Use a type assertion:

x1 := someFunctionWithAnInterfaceReturnValue()
x2, ok := x1.(map[string]string)
if !ok {
   // handle unexpected type
}
var value string = x2["hello"]

answered Jan 22 '19 at 17:13

Charlie Tumahai

113,709
12
249
242

How do you extract a value out of a golang map[string] string thats typed with interface{}

1 Answers1

Related