redis/list.go

package redis

import (
	redisdb "github.com/gomodule/redigo/redis"
)

//list 尾部增加值

func Rpush(key string, field interface{}) (int64, error) {
	c := GetConn()

	reply, err := c.Do("RPUSH", key, field)
	CloseConn(c)

	if err != nil {
		return 0, err
	}

	return redisdb.Int64(reply, nil)
}
//移除列表的最后一个元素，返回值为移除的元素。
func Rpop(key string) ([]byte, error) {
	c := GetConn()

	ret, err := c.Do("RPOP", key)
	CloseConn(c)

	if err != nil {
		return nil, err
	}
	reply, err := redisdb.Bytes(ret, err)

	return reply, err
}
//list 头部增加值

func Lpush(key string, field interface{}) (int64, error) {
	c := GetConn()

	reply, err := c.Do("LPUSH", key, field)
	CloseConn(c)

	if err != nil {
		return 0, err
	}

	return redisdb.Int64(reply, nil)
}

//list 长度

func Llen(key string) (int64, error) {
	c := GetConn()

	reply, err := c.Do("LLEN", key)
	CloseConn(c)

	if err != nil {
		return 0, err
	}

	return redisdb.Int64(reply, nil)
}

//list　通过索引设置列表元素的值 LSET key index value

func Lset(key string, index int, value interface{}) (interface{}, error) {
	c := GetConn()

	reply, err := c.Do("LSET", key, index, value)
	CloseConn(c)

	return reply, err
}

/*
	LRANGE key start stop
	获取列表指定范围内的元素
*/

func Lrange(key string, start, stop int64) ([][]byte, error) {
	c := GetConn()

	ret, err := c.Do("LRANGE", key, start, stop)

	reply := make([][]byte, 0)

	if err == nil {
		reply, err = redisdb.ByteSlices(ret, err)
	}
	CloseConn(c)
	return reply, err
}