Method: Redis::Commands::HyperLogLog#pfmerge

Defined in:
lib/redis/commands/hyper_log_log.rb

#pfmerge(dest_key, *source_key) ⇒ Boolean

Merge multiple HyperLogLog values into an unique value that will approximate the cardinality of the union of the observed Sets of the source HyperLogLog structures.

Parameters:

  • dest_key (String) —

    destination key

  • source_key (String, Array<String>) —

    source key, or array of keys

Returns:

  • (Boolean) 


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# File 'lib/redis/commands/hyper_log_log.rb', line 32

def pfmerge(dest_key, *source_key)
  send_command([:pfmerge, dest_key, *source_key], &BoolifySet)
end