single_quote-vs-double_quote.rb

single_quote-vs-double_quote.rb

require 'benchmark/ips'

def fast
 ''
end

def slow
 ""
end

def fast_with_message
  'hello world!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
end

def slow_with_message
  "hello world!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
end

Benchmark.ips do |x|
  x.report('single_quote')   { fast }
  x.report('double_quote') { slow }
  x.report('single_quote_with_message')   { fast_with_message }
  x.report('double_quote_with_message') { slow_with_message }
  x.compare!
end

__END__

$ ruby single_quote-vs-double_quote.rb
Warming up --------------------------------------
        single_quote   227.716k i/100ms
        double_quote   185.211k i/100ms
single_quote_with_message
                       180.561k i/100ms
double_quote_with_message
                       210.071k i/100ms
Calculating -------------------------------------
        single_quote      6.556M (±14.4%) i/s -     32.108M in   5.001760s
        double_quote      6.396M (±13.2%) i/s -     31.486M in   5.013764s
single_quote_with_message
                          6.167M (±15.1%) i/s -     30.154M in   5.023311s
double_quote_with_message
                          5.843M (±19.9%) i/s -     27.939M in   5.004880s

Comparison:
        single_quote:  6556214.2 i/s
        double_quote:  6395775.8 i/s - same-ish: difference falls within error
single_quote_with_message:  6166603.6 i/s - same-ish: difference falls within error
double_quote_with_message:  5843498.3 i/s - same-ish: difference falls within error

ruby single_quote-vs-double_quote.rb  27.48s user 0.19s system 97% cpu 28.513 total