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31 lines
616 B
Go
31 lines
616 B
Go
package zset
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import "github.com/nalgeon/redka/internal/redis"
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// Returns the number of members in a sorted set.
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// ZCARD key
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// https://redis.io/commands/zcard
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type ZCard struct {
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redis.BaseCmd
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Key string
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}
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func ParseZCard(b redis.BaseCmd) (*ZCard, error) {
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cmd := &ZCard{BaseCmd: b}
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if len(cmd.Args()) != 1 {
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return cmd, redis.ErrInvalidArgNum
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}
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cmd.Key = string(cmd.Args()[0])
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return cmd, nil
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}
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func (cmd *ZCard) Run(w redis.Writer, red redis.Redka) (any, error) {
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n, err := red.ZSet().Len(cmd.Key)
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if err != nil {
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w.WriteError(cmd.Error(err))
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return nil, err
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}
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w.WriteInt(n)
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return n, nil
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}
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