Maximum arity of ruby function? -

i looking make efficient function clear out redis-based cache.

i have method call returns number of keys redis:

$redis.keys("foo:*")

that returns keys start "foo:". next, i'd delete values these keys.

one (memory-intensive) way is:

$redis.keys("foo:*").each |key|   $redis.del(key) end

i'd avoid loading keys memory, , making numerous requests redis server.

another way use splat operator:

keys = $redis.keys("foo:*") $redis.del(*keys)

the problem don't know maximum arity of $redis.del method, nor of ruby method, can't seem find online.

what maximum arity?

@muistooshort in comments had suggestion turned out right, redis driver knows array argument:

 # there 1,000,000 keys of form "foo:#{number}"  keys = $redis.keys("foo:*")  $redis.del(keys) # => 1000000

simply pass array of keys $redis.del

Detect