5 ms·

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

• goldbrick 10y ago
  Why not just make the argument default to 16? Is something non-obvious going on?
  • infraruby 10y ago
    The caller may pass nil explicitly.
    • goldbrick 10y ago
      I don't understand. You may still pass nil explicitly if the argument defaults to 16?
      • infraruby 10y ago
        Yes: def f(n = 16) n end p f # => 16 p f(nil) # => nil