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# frozen_string_literal: true
class Redis
module Commands
module Sets
# Get the number of members in a set.
#
# @param [String] key
# @return [Integer]
def scard(key)
send_command([:scard, key])
end
# Add one or more members to a set.
#
# @param [String] key
# @param [String, Array<String>] member one member, or array of members
# @return [Integer] The number of members that were successfully added
def sadd(key, *members)
members.flatten!(1)
send_command([:sadd, key].concat(members))
end
# Add one or more members to a set.
#
# @param [String] key
# @param [String, Array<String>] member one member, or array of members
# @return [Boolean] Wether at least one member was successfully added.
def sadd?(key, *members)
members.flatten!(1)
send_command([:sadd, key].concat(members), &Boolify)
end
# Remove one or more members from a set.
#
# @param [String] key
# @param [String, Array<String>] member one member, or array of members
# @return [Integer] The number of members that were successfully removed
def srem(key, *members)
members.flatten!(1)
send_command([:srem, key].concat(members))
end
# Remove one or more members from a set.
#
# @param [String] key
# @param [String, Array<String>] member one member, or array of members
# @return [Boolean] Wether at least one member was successfully removed.
def srem?(key, *members)
members.flatten!(1)
send_command([:srem, key].concat(members), &Boolify)
end
# Remove and return one or more random member from a set.
#
# @param [String] key
# @return [String]
# @param [Integer] count
def spop(key, count = nil)
if count.nil?
send_command([:spop, key])
else
send_command([:spop, key, Integer(count)])
end
end
# Get one or more random members from a set.
#
# @param [String] key
# @param [Integer] count
# @return [String]
def srandmember(key, count = nil)
if count.nil?
send_command([:srandmember, key])
else
send_command([:srandmember, key, count])
end
end
# Move a member from one set to another.
#
# @param [String] source source key
# @param [String] destination destination key
# @param [String] member member to move from `source` to `destination`
# @return [Boolean]
def smove(source, destination, member)
send_command([:smove, source, destination, member], &Boolify)
end
# Determine if a given value is a member of a set.
#
# @param [String] key
# @param [String] member
# @return [Boolean]
def sismember(key, member)
send_command([:sismember, key, member], &Boolify)
end
# Determine if multiple values are members of a set.
#
# @param [String] key
# @param [String, Array<String>] members
# @return [Array<Boolean>]
def smismember(key, *members)
members.flatten!(1)
send_command([:smismember, key].concat(members)) do |reply|
reply.map(&Boolify)
end
end
# Get all the members in a set.
#
# @param [String] key
# @return [Array<String>]
def smembers(key)
send_command([:smembers, key])
end
# Subtract multiple sets.
#
# @param [String, Array<String>] keys keys pointing to sets to subtract
# @return [Array<String>] members in the difference
def sdiff(*keys)
keys.flatten!(1)
send_command([:sdiff].concat(keys))
end
# Subtract multiple sets and store the resulting set in a key.
#
# @param [String] destination destination key
# @param [String, Array<String>] keys keys pointing to sets to subtract
# @return [Integer] number of elements in the resulting set
def sdiffstore(destination, *keys)
keys.flatten!(1)
send_command([:sdiffstore, destination].concat(keys))
end
# Intersect multiple sets.
#
# @param [String, Array<String>] keys keys pointing to sets to intersect
# @return [Array<String>] members in the intersection
def sinter(*keys)
keys.flatten!(1)
send_command([:sinter].concat(keys))
end
# Intersect multiple sets and store the resulting set in a key.
#
# @param [String] destination destination key
# @param [String, Array<String>] keys keys pointing to sets to intersect
# @return [Integer] number of elements in the resulting set
def sinterstore(destination, *keys)
keys.flatten!(1)
send_command([:sinterstore, destination].concat(keys))
end
# Add multiple sets.
#
# @param [String, Array<String>] keys keys pointing to sets to unify
# @return [Array<String>] members in the union
def sunion(*keys)
keys.flatten!(1)
send_command([:sunion].concat(keys))
end
# Add multiple sets and store the resulting set in a key.
#
# @param [String] destination destination key
# @param [String, Array<String>] keys keys pointing to sets to unify
# @return [Integer] number of elements in the resulting set
def sunionstore(destination, *keys)
keys.flatten!(1)
send_command([:sunionstore, destination].concat(keys))
end
# Scan a set
#
# @example Retrieve the first batch of keys in a set
# redis.sscan("set", 0)
#
# @param [String, Integer] cursor the cursor of the iteration
# @param [Hash] options
# - `:match => String`: only return keys matching the pattern
# - `:count => Integer`: return count keys at most per iteration
#
# @return [String, Array<String>] the next cursor and all found members
#
# See the [Redis Server SSCAN documentation](https://redis.io/docs/latest/commands/sscan/) for further details
def sscan(key, cursor, **options)
_scan(:sscan, cursor, [key], **options)
end
# Scan a set
#
# @example Retrieve all of the keys in a set
# redis.sscan_each("set").to_a
# # => ["key1", "key2", "key3"]
#
# @param [Hash] options
# - `:match => String`: only return keys matching the pattern
# - `:count => Integer`: return count keys at most per iteration
#
# @return [Enumerator] an enumerator for all keys in the set
#
# See the [Redis Server SSCAN documentation](https://redis.io/docs/latest/commands/sscan/) for further details
def sscan_each(key, **options, &block)
return to_enum(:sscan_each, key, **options) unless block_given?
cursor = 0
loop do
cursor, keys = sscan(key, cursor, **options)
keys.each(&block)
break if cursor == "0"
end
end
end
end
end
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