1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
# frozen_string_literal: true
class Redis
module Commands
module HyperLogLog
# Add one or more members to a HyperLogLog structure.
#
# @param [String] key
# @param [String, Array<String>] member one member, or array of members
# @return [Boolean] true if at least 1 HyperLogLog internal register was altered. false otherwise.
def pfadd(key, member)
send_command([:pfadd, key, member], &Boolify)
end
# Get the approximate cardinality of members added to HyperLogLog structure.
#
# If called with multiple keys, returns the approximate cardinality of the
# union of the HyperLogLogs contained in the keys.
#
# @param [String, Array<String>] keys
# @return [Integer]
def pfcount(*keys)
send_command([:pfcount] + keys.flatten(1))
end
# 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.
#
# @param [String] dest_key destination key
# @param [String, Array<String>] source_key source key, or array of keys
# @return [Boolean]
def pfmerge(dest_key, *source_key)
send_command([:pfmerge, dest_key, *source_key], &BoolifySet)
end
end
end
end
|
