blockarg.rb

def sequence4(n, m, c, b)
  # p("Inside sequence4")
  i = 0
  while(i < n)
    b.call i*m + c
    i += 1
  end
end

proc1 = Proc.new { |x| puts x }
sequence4(6,3,3,proc1)

require 'benchmark'
n = 100
Benchmark.bm do |x|
  x.report { n.times { sequence4(6,3,3,proc1) }}
end

Simplified from https://gist.github.com/350693/e8a61cb1b7c65fd5438c323da23bab4ff2a810a9

Replaced Time.now.usec with ruby benchmark module.