Check the type of a variable in Golang

To check the type of a value in Go is to use the %T verb in conjunction with fmt.Printf. This works well if you want to print the type to the console for debugging purposes.

Example:

package main

import "fmt"

func main() {

    var a = "initial"
    fmt.Printf("Type of a is %T\n", a)

    var b int = 1
    fmt.Printf("Type of b is %T\n", b)

    var c float64 = 3.14
    fmt.Printf("Type of c is %T\n", c)

    var d = true
    fmt.Printf("Type of d is %T\n", d)
}

Output:

Type of a is string
Type of b is int
Type of c is float64
Type of d is bool