duanba5777 2018-08-11 16:40
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gomodule / redigo我如何按多个键进行Redis

I am trying to rpush multiple elements to a redis key. Currently using a redis pool connection using https://github.com/gomodule/redigo.

If I try to put an array into rpush , a string with the array concatenated is pushed. How can I push individual elements instead

conn := Pool.Get() // A redigo redis pool 
arr := []string{"a", "b", "c", "d"}
conn.Do("RPUSH","TEST","x","y") // This works
conn.Do("RPUSH", "TEST", arr) //This does not work
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  • douhei8633 2018-08-11 17:01
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    I don't have the library but from what I saw on their documentation, I guess that this should work:

    conn.Do("RPUSH", arr...)
    

    ... is a parameter operator that unpacks the elements of your slice and passes as them separate arguments to a variadic function, which would be the same as this:

    arr := []string{"TEST", "a", "b", "c", "d"}
    
    conn.Do("RPUSH", "TEST", arr[0], arr[1], arr[2], arr[3])
    

    More information can be found on variadic function in go in this very complete article

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