Issues » 238

This week's Ruby and Rails news
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Ruby Weekly
Issue 238 — March 19, 2015
Jarkko Laine
Now that Puma, a threaded app server, is the preferred Web server for Rails apps on Heroku, it’s worth considering if your app is ready for such an environment. Jarkko digs into the issues.


rubytogether
A new non-profit trade association bringing together resources to improve community tools like Bundler and RubyGems. A developer has been funded to work on such tools and folks like Aaron Patterson, Sarah Mei and Steve Klabnik are on its board.


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Santosh Wadghule
A look at building a system that can call a number supplied by a user of your app and request they push ‘1’ to validate.


Montana Low
A quick look at code behind a Hacker News ‘title generator’ that uses Markov chains.


Justin Weiss
What is a session? How does Rails know to show the right data to the right person? And how do you decide where you keep your session data?


The Pragmatic Studio
A very professional (but free) 20 minute screencast by Mike Clark covering the basics of introducing various JavaScript-backed effects and features into a Rails 4 app.


Benjamin Tan
words.map { |s| s.length } can be reworked as words.map &:length but what’s really happening and how can you reimplement this idea yourself?


Monkey and Crow
The ‘travel’ and ‘travel_to’ helpers in Rails 4.1+ help you test time related code, but how are they implemented?


Aaron Patterson
Aaron ‘tenderlove’ Patterson has made a huge gain in array allocation efficiency in RubyGems by leaning on good old linked lists.


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In brief

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