Golang : convert string or integer to big.Int type

Problem :

You have a big integer number in string format and you want to convert(cast) it to big.Int type. How to do that?

Solution :

Use math/big.Int type. Create a new big.Int type variable and the set the value with SetString() method.

For example :

 // convert number to big.Int type
 ip := new(big.Int)
 ip.SetString("338288524927261089654163772891438416681", 10) //base 10