Slicing a byte array to conform to a struct for param in Golang?-CodePudding

I have something roughly like this

type Guid [16]byte

type Payload struct {
    ....
    SthGuid  [17]byte
}


func (h *...) Get(guid Guid) (... error) {

}

and I want to call Get with the last 16 bytes of SthGuid. E.g.,

Get(PayloadInstance.SthGuid[1:16]))

cannot convert SthGuid[1:16] (value of type []byte) to Guid

I'm trying to call SthGuid[1:] to slice the first byte and use the last 16 bytes as an input param. Doesn't work that way.

CodePudding user response：

You can do copying of array with right type, e.g:

var guid [16]byte
copy(guid[:], SthGuid[1:16])
Get(guid)

or, as a Go 1.17 you can try to use slice to array conversion: