Make project with bbolt?

blockchain/golang/part4/blockchain.go

@@ -11,7 +11,7 @@ import (
 
 const dbFile = "blockchain.db"
 const blocksBucket = "blocks"
-const genesisCoinbaseData = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
+const genesisCoinbaseData = "genesisCoinbaseData"
 
 // Blockchain implements interactions with a DB
 type Blockchain struct {
@@ -128,6 +128,7 @@ func (bc *Blockchain) FindSpendableOutputs(address string, amount int) (int, map
 	unspentTXs := bc.FindUnspentTransactions(address)
 	accumulated := 0
 
+// Give loop name to continue or break
 Work:
 	for _, tx := range unspentTXs {
 		txID := hex.EncodeToString(tx.ID)
@@ -183,10 +184,11 @@ func dbExists() bool {
 	return true
 }
 
-// NewBlockchain creates a new Blockchain with genesis Block
+// 1. NewBlockchain creates a new Blockchain with genesis Block
 func NewBlockchain(address string) *Blockchain {
 	if dbExists() == false {
-		fmt.Println("No existing blockchain found. Create one first.")
+		fmt.Println("No blockchain butil yet. We will create one first.")
+		// There was some issue which caused the program to exit.
 		os.Exit(1)
 	}
 
@@ -212,10 +214,10 @@ func NewBlockchain(address string) *Blockchain {
 	return &bc
 }
 
-// CreateBlockchain creates a new blockchain DB
+// 2. CreateBlockchain creates a new blockchain DB
 func CreateBlockchain(address string) *Blockchain {
 	if dbExists() {
-		fmt.Println("Blockchain already exists.")
+		fmt.Println("Blockchain was already made.")
 		os.Exit(1)
 	}
 

blockchain/golang/part4/cli.go

@@ -9,6 +9,7 @@ import (
 )
 
 // CLI responsible for processing command line arguments
+// Use this form just to attach methods to it.
 type CLI struct{}
 
 func (cli *CLI) createBlockchain(address string) {

blockchain/golang/part4/go.mod

@@ -3,7 +3,7 @@ module https: //github.com/steadylearner/part4
 go 1.13
 
 require (
-	github.com/boltdb/bolt v1.3.1 // indirect
+	github.com/boltdb/bolt v1.3.1
 	go.etcd.io/bbolt v1.3.3
 	golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4 // indirect
 )