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fastruby / fast-ruby

:dash: Writing Fast Ruby :heart_eyes: -- Collect Common Ruby idioms.
https://github.com/fastruby/fast-ruby
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Add benchmark between array + and concat method #46

Closed xjyjp closed 9 years ago

xjyjp commented 9 years ago

Although there is no huge speed difference between Array's + and concat method, the implement is different in ruby. So I write a simple compare and paste the benchmark result here.

> ruby -v code/array/array-+-vs-concat.rb
ruby 2.1.4p265 (2014-10-27 revision 48166) [x86_64-darwin14.0]
Calculating -------------------------------------
             Array#+    70.916k i/100ms
        Array#concat    62.433k i/100ms
-------------------------------------------------
             Array#+      1.820M (± 5.5%) i/s -      9.077M
        Array#concat      1.705M (± 6.2%) i/s -      8.491M

Comparison:
             Array#+:  1819615.5 i/s
        Array#concat:  1704666.5 i/s - 1.07x slower
JuanitoFatas commented 9 years ago

Thanks @jackxu :+1:! Good to know :wink: