Date parser

date_parser.rb

require 'date'
require 'benchmark'

def real_time
  Benchmark.realtime do
    100000.times do
      yield
    end
  end
end

def print(time)
  puts time.round(3)
end

date = '03-12-2015'
time = real_time { Date.parse(date) }
print(time)
time = real_time { Date.strptime(date, '%d-%m-%Y') }
print(time)

Results:
0.628
0.163