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A simple example of using LevelDB in golang
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| package main | |
| import ( | |
| "fmt" | |
| "github.com/syndtr/goleveldb/leveldb" | |
| "log" | |
| ) | |
| func main() { | |
| db, err := leveldb.OpenFile("/tmp/foo.db", nil) | |
| if err != nil { | |
| log.Fatal("Yikes!") | |
| } | |
| defer db.Close() | |
| // err = db.Put([]byte("fizz"), []byte("buzz"), nil) | |
| // err = db.Put([]byte("fizz2"), []byte("buzz2"), nil) | |
| // err = db.Put([]byte("fizz3"), []byte("buzz3"), nil) | |
| iter := db.NewIterator(nil, nil) | |
| for iter.Next() { | |
| key := iter.Key() | |
| value := iter.Value() | |
| fmt.Printf("key: %s | value: %s\n", key, value) | |
| } | |
| fmt.Println("\n") | |
| for ok := iter.Seek([]byte("fizz2")); ok; ok = iter.Next() { | |
| key := iter.Key() | |
| value := iter.Value() | |
| fmt.Printf("key: %s | value: %s\n", key, value) | |
| } | |
| fmt.Println("\n") | |
| for ok := iter.First(); ok; ok = iter.Next() { | |
| key := iter.Key() | |
| value := iter.Value() | |
| fmt.Printf("key: %s | value: %s\n", key, value) | |
| } | |
| iter.Release() | |
| err = iter.Error() | |
| } |
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