How Can I Efficiently Convert a Go []int8 Slice to a String?

Converting []int8 to String

In Go, the []byte type provides a convenient way to convert a byte slice to a string. However, attempting to convert a []int8 slice to a string directly results in an error.

Fastest Conversion Method

For optimal performance, the following method is recommended to convert a []int8 slice to a string:

func B2S(bs []int8) string {
    b := make([]byte, len(bs))
    for i, v := range bs {
        b[i] = byte(v)
    }
    return string(b)
}

Conversion Logic

This method works by iterating over the []int8 slice and converting each element to a byte using the byte() function. This is possible because byte is an alias for uint8, and int8 values can be implicitly converted to uint8 values without loss of information. The resulting slice of bytes is then passed to the string() function to create the string.

Note: If the input is actually a []uint8 slice, it can be directly converted to a string using string(bs).

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