Example
One implementation of the io.Reader interface can be found in the bytes package. It allows a byte slice to be used as the source for a Reader. In this example the byte slice is taken from a string, but is more likely to have been read from a file or network connection.
message := []byte("Hello, playground")
reader := bytes.NewReader(message)
bs := make([]byte, 5)
n, err := reader.Read(bs)
if err != nil {
log.Fatal(err)
}
fmt.Printf("Read %d bytes: %s", n, bs)
