How do I generate the first n prime numbers?

Question

I am learning Ruby and doing some math stuff. One of the things I want to do is generate prime numbers.

I want to generate the first ten prime numbers and the first ten

Answer 1

Not related at all with the question itself, but FYI:

• if someone doesn't want to keep generating prime numbers again and again (a.k.a. greedy resource saver)
• or maybe you already know that you must to work with subsequent prime numbers in some way
• other unknown and wonderful cases

Try with this snippet:

  require 'prime'

  for p in Prime::Generator23.new
    # `p` brings subsequent prime numbers until the end of the days (or until your computer explodes)
    # so here put your fabulous code
    break if #.. I don't know, I suppose in some moment it should stop the loop
  end
  fp

If you need it, you also could use another more complex generators as Prime::TrialDivisionGenerator or Prime::EratosthenesGenerator. More info