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Learn how to use Test-Driven Development to write better software in our newest Upcase trail.
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Upgrade all the things!
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How to fix the “Compiled slug size: 500.6M is too large (max is 500M)” error when trying to deploy your Heroku app.
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Simplify and clarify your code by carefully choosing abstractions.
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Getting started with Action Mailer and Active Job.
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let can lead to bloat. Be careful.
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Paperclip is affected by CVE-2016–3714 if used with ImageMagick 7.0.1-0 or earlier.
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There is no need to upgrade Paperclip in light of CVE-2016–3714. You may choose to upgrade ImageMagick regardless.
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A look under the hood at how blocks and procs are used in Ruby.
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By understanding Maybe, you begin to see code in a new light.
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