如何改善这种生成随机数字令牌的Ruby代码？

Question

I came up with this solution:

  def generate_tok(n)
    tok = ""
    n.times.inject(tok) do |n, t|
      tok += SecureRandom::random_number(9).to_s
    end
  end

And it works fine.

Just wondering if anyone see a way to improve it? Or a better solution. Even a way to get rid of the initialisation (tok="") is welcome.

Answer 1

I would start with something like this:

require 'securerandom'

def generate_token(length)
  Array.new(length) { SecureRandom::random_number(10) }.join
end