What is the correct way to pass the XX option to the ZADD command in Redis Rails?

Question

Ruby on Rails

I set the value in sorted set

$redis.zadd('rating', 0.43, 31)

I want to change:

$redis.zadd('rating', 0.44, 31, {:xx => true})

Answer:

Redis::CommandError: ERR syntax error

Answer 1

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Answer 2

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Answer 3

Is Innopolis still not accepting full-time bachelor's degrees?

Answer 4

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Answer 5

A red diploma is not a sign of intelligence.
I know a girl who has a red diploma, she stupidly memorized everything.
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Answer 6

Of course here https://otus.ru/categories/programming/