How to get record bins before update when using operate

2

I am not a developer but the sandbox makes it so easy to try things out that I did the following and seem I am able to get the value of a bin before it gets updated and returned in a single shot.

I first used the sample on this page of the sandbox to create a new record:

import (
    "fmt"
    "github.com/aerospike/aerospike-client-go/v6" 
)

// Establishes a connection to the server
client, err := aerospike.NewClient("127.0.0.1", 3000)

// Creates a key with the namespace "sandbox", set "ufodata", and user key 5001
key, err := aerospike.NewKey("sandbox", "ufodata", 5001)

// Create posted bin to insert
posted := aerospike.NewBin("posted", 20220602)

// Update the record
record, err := client.Operate(nil, key, 
    aerospike.PutOp(posted),
    aerospike.MapPutOp(aerospike.DefaultMapPolicy(), "report", aerospike.NewValue("city"), aerospike.NewValue("Ypsilanti")),
    aerospike.GetBinOp("report"))
    
// Do something
fmt.Printf("Record: %v", record.Bins)

// Close the connection to the server
client.Close()

I then tried the following to basically update the bin “posted” but read its value prior to the update and got the expected value… running a second time then shows the updated value:

import (
    "fmt"
    "github.com/aerospike/aerospike-client-go/v6" 
)

// Establishes a connection to the server
client, err := aerospike.NewClient("127.0.0.1", 3000)

// Creates a key with the namespace "sandbox", set "ufodata", and user key 5001
key, err := aerospike.NewKey("sandbox", "ufodata", 5001)

// Create posted bin to insert
posted := aerospike.NewBin("posted", 20220603)

// Update the record
record, err := client.Operate(nil, key, 
    aerospike.GetBinOp("posted"),
    aerospike.PutOp(posted),
    aerospike.MapPutOp(aerospike.DefaultMapPolicy(), "report", aerospike.NewValue("city"), aerospike.NewValue("Ypsilanti")),
    aerospike.GetBinOp("report"))
    
// Do something
fmt.Printf("Record: %v", record.Bins)

// Close the connection to the server
client.Close()

But I don’t know whether this is the proper way to use the API. I am pretty sure this is supposed to work, including within CDTs, but curious if it doesn’t work for you somehow.