I'm trying to achieve a type assertion by passing in a type into a function. In other words, I'm trying to achieve something like this:
// Note that this is pseudocode, because Type isn't the valid thing to use here
func myfunction(mystring string, mytype Type) {
...
someInterface := translate(mystring)
object, ok := someInterface.(mytype)
... // Do other stuff
}
func main() {
// What I want the function to be like
myfunction("hello world", map[string]string)
}
What's the proper function declaration I need to use in myfunction
, to successfully perform the type assertion in myfunction
?
@hlin117,
Hey, if I understood your question correctly and you need to compare the types, here's what you can do:
package main
import (
"fmt"
"reflect"
)
func myfunction(v interface{}, mytype interface{}) bool {
return reflect.TypeOf(v) == reflect.TypeOf(mytype)
}
func main() {
assertNoMatch := myfunction("hello world", map[string]string{})
fmt.Printf("%+v\n", assertNoMatch)
assertMatch := myfunction("hello world", "stringSample")
fmt.Printf("%+v\n", assertMatch)
}
The approach is to use a sample of the type you'd like to match.