Golang : Convert(cast) string to int64

Problem :

You want to convert(cast) a string to big integer value(int64) for display.

Solution :

Use strconv.ParseInt() function to convert the string value to int64 type. For example :

 package main

 import (
 "fmt"
 "reflect"
 "strconv"
 )

 func main() {

 var str string = "123456789"

 sixtyFour, err := strconv.ParseInt(str, 10, 64) // use base 10 for sanity

 if err != nil {
 fmt.Println(err)
 }

 fmt.Printf("The type of sixtyFour is %v \n", reflect.TypeOf(sixtyFour))

 }

Output :

The type of sixtyFour is int64

Reference :

http://golang.org/pkg/strconv/#ParseInt