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How to Handle Extraordinarily Large Hexadecimal Strings
When working with hexadecimal strings that exceed the limits of int64, the appropriate solution is to employ the math/big package. This package provides functionalities for dealing with numbers larger than 64 bits.
Example:
Consider the hexadecimal string 0x000000d3c21bcecceda1000000.
package main import ( "encoding/json" "fmt" "math/big" ) func main() { hexString := "0x000000d3c21bcecceda1000000" bigInt := big.NewInt(0) bigInt.SetString(hexString, 16) decimal, ok := bigInt.Float64() if !ok { // Handle error } fmt.Println(decimal) result, err := json.Marshal(decimal) if err != nil { // Handle error } fmt.Println(string(result)) }
This code uses the SetString method to convert the hexadecimal string into a big.Int and then obtains its decimal representation using the Float64 method. The decimal value is then marshaled into a JSON string.
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