| 
| | | Issue 277 — December 17, 2015 | 
 | 
 |  | | 
Jamis Buck
 
Jamis Buck cleverly bends Ruby to his will yet again (remember dynamic def ?) - this time using  Proc#parameters to implement a clever way to access data in a hash.
 | 
 
 
 | 
Richard Schneeman
 
Richard Schneeman continues his series by demonstrating how to generate a heap dump from an app running on Heroku and analyze the results.
 
 | 
 
 | 
Corgibytes  Sponsored
 Tackling technical debt and integrating disparate systems is fun, too. (Yes, really.)  
 | 
 
 | 
Robert Pankowecki
 
A look at the practice of making fake adapters to third party services to enable more robust testing of the main app.
 
 | 
 
 | 
Ruby News
 
Includes a security fix  for Fiddle (the libffi wrapper) and DL, plus some minor bug fixes. Ruby 2.1.8  and 2.0.0-p648  have also been released to fix the vulnerability.
 | 
 
 | 
InfoWorld
 
The OMR project makes pieces of IBM’s J9 JVM available to other language runtimes. A technical explanation and some bits to play with are available here.
 | 
 
 | 
Mike Perham
 
The creator of Sidekiq knows a thing or two about threaded code and shares some tips on how to test multithreaded code here.
 
 | 
 
 Jobs  
Principal RoR Engineer in Austin, TexasWe are working on a SaaS platform in Rails, Angular.js, CoffeeScript and Postgres. Join a well backed ground floor opportunity and help design and develop the product. Scout RFP
Get Multiple Job Offers Without ApplyingThrough Hired, companies find you - and offer salary and other benefits upfront. Stop applying for jobs and let jobs apply for you. Hired.com
 In brief |  |
 |