Ruby regexes: benchmarking scan vs =~

regex_benchmarking.rb

r = /bobcat|sky track|framing|forklift|demolition|plumbing|drywall|concrete|RF & magnetic shielding|electrian|bossman|boss man|fencing|farm equipment|equipment|steel|a job|my job|ur job|working|building|adding onto|18 wheeler|nuclear|powerplant|equipment|work station|my work|motor|fitting|fittin|stainless steal|stainless steel|mechanic|pipe|pipe welding|7018|6010|boiler|tool box|toolbox|tool|grinder|underpaid|repair|Mike Rowe|Miller Electric Welding|manufacturing|metals|forestry & logging|commercial & industrial equipment|industrials|mining materials|tools equipment|trade school|clutch|cylinder|roof|day at the office|carpenter|driver|maintenanceweld|weldor|tig|mig|gmaw|line out|welder|welding|weldin|welding hood|weldin hood/i

string = "my work station in nashville. over $20,000 of equipment sitting on that table"

# =~
position_time = Benchmark.realtime do
  1000.times do
    string =~ r
  end
end


# #scan

scan_time = Benchmark.realtime do
  1000.times do
    string.scan(r)
  end
end

puts 'scan time'
puts scan_time
puts 'Position =~ time'
puts position_time