Talking head
Ruby Conference 2014

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