Talking head
Ruby Conference 2014

This presentation, by Alexander Dymo, is licensed under a Creative Commons Attribution ShareAlike 3.0

Did you know that inject() and especially all?() iterator nested in another loop can really slow you down? Or that bigdecimal and string comparison is unbelievably slow in Ruby < 2.0? Or that parsed CSV is 13x larger in memory than on disk? Want to know these and other performance hints with in-depth explanations? Want to learn how to use profilers to find what's slow by yourself? Then this session is for you.

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