You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: scan.go
    path of file: ./repos/go-gin-example/vendor/github.com/gomodule/redigo/redis
    
    the code of the file until where you have to start completion: // Copyright 2012 Gary Burd
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.

package redis

import (
	"errors"
	"fmt"
	"reflect"
	"strconv"
	"strings"
	"sync"
)

func ensureLen(d reflect.Value, n int) {
	if n > d.Cap() {
		d.Set(reflect.MakeSlice(d.Type(), n, n))
	} else {
		d.SetLen(n)
	}
}

func cannotConvert(d reflect.Value, s interface{}) error {
	var sname string
	switch s.(type) {
	case string:
		sname = "Redis simple
    
func convertAssign(d interface{}, s interface{}) (err error) {
	if scanner, ok := d.(Scanner); ok {
		return scanner.RedisScan(s)
	}

	// Handle the most common destination types using type switches and
	// fall back to reflection for all other types.
	switch s := s.(type) {
	case nil:
		// ignore
	case []byte:
		switch d := d.(type) {
		case *string:
			*d = string(s)
		case *int:
			*d, err = strconv.Atoi(string(s))
		case *bool:
			*d, err = strconv.ParseBool(string(s))
		case *[]byte:
			*d = s
		case *interface{}:
			*d = s
		case nil:
			// skip value
		default:
			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
				err = cannotConvert(d, s)
			} else {
				err = convertAssignBulkString(d.Elem(), s)
			}
		}
	case int64:
		switch d := d.(type) {
		case *int:
			x := int(s)
			if int64(x) != s {
				err = strconv.ErrRange
				x = 0
			}
			*d = x
		case *bool:
			*d = s != 0
		case *interface{}:
			*d = s
		case nil:
			// skip value
		default:
			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
				err = cannotConvert(d, s)
			} else {
				err = convertAssignInt(d.Elem(), s)
			}
		}
	case string:
		switch d := d.(type) {
		case *string:
			*d = s
		case *interface{}:
			*d = s
		case nil:
			// skip value
		default:
			err = cannotConvert(reflect.ValueOf(d), s)
		}
	case []interface{}:
		switch d := d.(type) {
		case *[]interface{}:
			*d = s
		case *interface{}:
			*d = s
		case nil:
			// skip value
		default:
			if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
				err = cannotConvert(d, s)
			} else {
				err = convertAssignArray(d.Elem(), s)
			}
		}
	case Error:
		err = s
	default:
		err = cannotConvert(reflect.ValueOf(d), s)
	}
	return
}