将字节切片转换为 int 切片

Question

I'm currently trying to convert a byte to an int so I proceed like this:

var d = []byte{0x01}
val, err := strconv.Atoi(string(d))

and I get this error:

strconv.Atoi: parsing "\\x01": invalid syntax

I've tried a lot of way without success yet..

Anyone got an idea?

Answer 1

The slice already contains a byte value of 1 , not the ascii character 1 , so there is no need to try and convert it to a string.

To convert a slice of byte to a slice of int , convert each value individually

byteSlice := []byte{1, 2, 3, 4}
intSlice := make([]int, len(byteSlice))
for i, b := range byteSlice {
    intSlice[i] = int(b)
}

For reference, see the sections on Conversions in the Go Language Specification , and in Effective Go .