golang convert string to int64

To convert a string to an int64 in Go (Golang), you can use the strconv package. Here are the steps to do so:

1. Import the strconv package:

import "strconv"

1. Use the ParseInt function from the strconv package to convert the string to an int64 value. The function signature is as follows:

func ParseInt(s string, base int, bitSize int) (i int64, err error)

• The first argument, "s", is the string that you want to convert.
• The second argument, "base", specifies the base of the number representation in the string. You can use 0 for automatic detection or specify a base between 2 and 36.
• The third argument, "bitSize", specifies the bit size of the resulting int64 value, typically 0 for automatic detection or 64 for int64.

Here's an example of using ParseInt to convert a string to int64:

str := "123"
num, err := strconv.ParseInt(str, 10, 64)
if err != nil {
    // handle the error
} else {
    // use the converted int64 value
}

In this example, the string "123" is converted to an int64 value using base 10 and a bit size of 64. The converted value is stored in the "num" variable. If the conversion fails, an error will be returned, which you can handle accordingly.

That's how you can convert a string to an int64 in Go using the strconv package. Let me know if you have any further questions.