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31 lines
607 B
Go
31 lines
607 B
Go
package set
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import "github.com/nalgeon/redka/internal/redis"
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// Returns the number of members in a set.
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// SCARD key
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// https://redis.io/commands/scard
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type SCard struct {
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redis.BaseCmd
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key string
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}
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func ParseSCard(b redis.BaseCmd) (*SCard, error) {
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cmd := &SCard{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 *SCard) Run(w redis.Writer, red redis.Redka) (any, error) {
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n, err := red.Set().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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