Working Demo

1.Make a temporary folder for this demo

 $ mkdir temp

2.Download library

 $ go get -u -t github.com/tinylib/msgp

3.Open editor and copy/paste and save the code below:

 package main

 import (
     "fmt"
 )

 //go:generate msgp

 type QryD struct {
         A int8 
         D int8 
         T string 
         K string 
         V string 
 }

 func main() {
     fmt.Println("Nothing to see here yet!")
 }

4.Run the following command:

 $ go generate

5.Two more files are generated here, main_ge.go and main_gen_test.go , verify by typing

 $ ls -al

6. Edit main.go by copy pasting these lines:

    package main
   
    import (
    	"fmt"
    	"github.com/tinylib/msgp/msgp"
   
    )
   
    //go:generate msgp
   
    type QryD struct {
    	A int8 
    	D int8 
    	T string 
    	K string 
    	V string 
    }
   
   
   
    func main() {
   
    	var valuePlaceholder QryD
   
    	v := QryD{A: 1, D: 9, T: "table", K: "key", V: "value"}
    	bts, err := v.MarshalMsg(nil)
    	if err != nil {
    //              fmt.Println(err) // print err or log error information
    	}
    	leftovervalues, err := valuePlaceholder.UnmarshalMsg(bts) //purpose of lefovervalues, pls read doc.
    	//leftovervalues does not hold QryD, it holds the number of slices of QryD
   
    	fmt.Println(valuePlaceholder)
    	fmt.Println(valuePlaceholder.A)
    	fmt.Println(valuePlaceholder.D)
    	fmt.Println(valuePlaceholder.T)
    	fmt.Println(valuePlaceholder.K)
    	fmt.Println(valuePlaceholder.V)
   
    	if err != nil {
    //              t.Fatal(err)
    	}
    	if len(leftovervalues) > 0 {
    	}else{
    	}
   
    	leftovervalues, err = msgp.Skip(bts)
    	if err != nil {
    //              t.Fatal(err)
    	}
    	if len(leftovervalues) > 0 {
    //              t.Errorf("%d bytes leftovervalues left over after Skip(): %q", len(leftovervalues), leftovervalues)
    	}
   
    	fmt.Println("Nothing to see here yet!")
    }
   

7. Run the following lines to generate "main" executable: $ go build main.go main_gen.go

8. Run the program $ ./main

9. You should see

    {1 9 table key value}
    1
    9
    table
    key
    value
    Nothing to see here yet!
   

10. That's it!