require "securerandom"
module SecureRandom
F = File.open("/dev/urandom")
def self.random_bytes(n = nil)
F.read(n || 16)
end
end require "securerandom"
module SecureRandom
F = File.open("/dev/urandom")
def self.random_bytes(n = nil)
F.read(n || 16)
end
end def f(n = 16)
n
end
p f # => 16
p f(nil) # => nil