Understanding "Prototypes" in JavaScript
For the purposes of this post, I will be talking about JavaScript objects using syntax defined in ECMAScript 5.1. The basic semantics existed in Edition 3, but they were not well exposed. A Whole New Object In JavaScript, objects are pairs of keys and values (in Ruby, this structure is called a Hash; in Python, it's called a dictionary). For example, if I wanted to describe my name, I could have a
clarifying-the-roles-of-the-gemspec-and-gemfile
TL;DR Although apps and gems look like they share the concept of "dependency", there are some important differences between them. Gems depend on a name and version range, and intentionally don't care about where exactly the dependencies come from. Apps have more controlled deployments, and need a guarantee that the exact same code is used on all machines (dev, ci and production). When developing a
Ruby 1.9 Encodings: A Primer and the Solution for Rails
UPDATE: The DataObjects drivers, which are used in DataMapper, are now updated to honor default_internal. Let's keep this moving. Since Ruby 1.9 announced support for encodings, there has been a flurry of activity to make existing libraries encoding aware, and a tornado of confusion as users of Ruby and Rails have tried to make sense of it. In this post, I will lay out the most common problems peo
The How and Why of Bundler Groups
Since version 0.9, Bundler has had a feature called "groups". The purpose of this feature is to allow you to specify groups of dependencies which may be used in certain situations, but not in others. For instance, you may use ActiveMerchant only in production. In this case, you could say: group :production do gem "activemerchant" end Specifying groups allows you to do two things. First, you can in
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