end-string-checking-match-vs-end_with.rb

require 'benchmark/ips'

SLUG = 'root_url'

def slow
  SLUG =~ /_(path|url)$/
end

def fast
  SLUG.end_with?('_path', '_url')
end

Benchmark.ips do |x|
  x.report('String#=~')        { slow }
  x.report('String#end_with?') { fast }
  x.compare!
end