package main import ( "fmt" "github.com/golang/protobuf/proto" ) func main() { b := proto.NewBuffer(nil) num := uint64(13) b.EncodeVarint(num) fmt.Println(b.Bytes()) }
package main import ( "fmt" "github.com/golang/protobuf/proto" "io" "os" ) func main() { f, _ := os.Create("file.bin") b := proto.NewBuffer(nil) num := uint64(42) b.EncodeVarint(num) io.Copy(f, b) }In this example, we create a new file and buffer, encode a varint value of 42 into the buffer, and then copy the contents of the buffer into the file using `io.Copy`. This will create a binary file containing the varint value 42. Both of these examples use the `proto.Buffer` package from the `github.com.golang/protobuf/proto` library to encode varint values.