Can't use db.scan () or db.scanner () in the Go program

[gsw945]

The functions signature is as follows:

redka/internal/rkey/db.go

Line 149 in 017c0b2

func (db *DB) Scan(cursor int, pattern string, ktype core.TypeID, count int) (ScanResult, error) {

redka/internal/rkey/db.go

Line 163 in 017c0b2

func (db *DB) Scanner(pattern string, ktype core.TypeID, pageSize int) *Scanner {

---

The required paremeter ktype must with type core.TypeID, but we can't write code as below:

import "github.com/nalgeon/redka/internal/core"

// example:
// type Logger struct {
// 	DB *redka.DB
// }
// var logger *Logger
// ...
// logger.DB.Key().Scan(0, "*", core.TypeString, 100)

due to error as below:

could not import github.com/nalgeon/redka/internal/core (invalid use of internal package "github.com/nalgeon/redka/internal/core")compiler[BrokenImport](https://pkg.go.dev/golang.org/x/tools/internal/typesinternal#BrokenImport)
Package core provides the core types used by other Redka packages.

[nalgeon]

Fixed in v0.5.3

db, _ := redka.Open("data.db", nil)
defer db.Close()

db.Str().Set("name", "alice")
db.Str().Set("city", "paris")

res, _ := db.Key().Scan(0, "*", redka.TypeString, 100)
fmt.Print("keys:")
for _, key := range res.Keys {
	fmt.Print(" ", key.Key)
}
fmt.Println()

// Output:
// keys: name city