Golang : How to check variable or object type during runtime?
Problem :
You need to determine the type of data your program is getting from the user input or the variable type during runtime. How to do that?
Solution :
Use the reflect
package's TypeOf(x).Kind()
function. For example :
package main
import (
"fmt"
"reflect"
)
func main() {
x := 1
typeX := reflect.TypeOf(x).Kind()
fmt.Println("X is type of : ", typeX)
y := float64(108.08)
typeY := reflect.TypeOf(y).Kind()
fmt.Println("Y is type of : ", typeY)
s := "hey!"
typeS := reflect.TypeOf(s).Kind()
if typeS == reflect.String {
fmt.Println("Variable S is type string!")
}
}
Output :
X is type of : int
Y is type of : float64
Variable S is type string!
By Adam Ng
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