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bolt.go
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/
bolt.go
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package main
import (
"errors"
"fmt"
"log"
"os"
"github.com/boltdb/bolt"
)
func main() {
db, err := bolt.Open("run/gou_bolt.db", 0644, nil)
if err != nil {
log.Fatal(err)
}
defer func() {
errr := db.Close()
if errr != nil {
log.Println(err)
}
}()
err = db.View(func(tx *bolt.Tx) error {
// Assume bucket exists and has keys
b := tx.Bucket([]byte(os.Args[1]))
if b == nil {
return errors.New("no bucket")
}
errr := b.ForEach(func(k, v []byte) error {
fmt.Printf("key=%s, value=%s\n", k, v)
fmt.Printf("key=%02x, value=%x\n", k, v)
return nil
})
if errr != nil {
log.Println(errr)
}
fmt.Println("")
errr = b.ForEach(func(k, v []byte) error {
fmt.Printf("key=%b, value=%b\n", k, v)
return nil
})
if errr != nil {
log.Println(errr)
}
return nil
})
log.Println(err)
}
// output:
// Hello World!