Node's Unicode Dragon
At Bugsnag we accept JSON payloads of application crashes. These often contain broken data. For example, if your app has crashed with an invalid encoding error, the JSON will often contain the invalid string that crashed your server. This shouldn’t be a problem for us as we read the JSON payload with Node and Node replaces all the invalid bytes with the unicode replacement character (� U+FFFD). Bu
Visualizing memory leaks in Ruby
Memory leaks are my least favourite type of bug. To track them down requires not only a detailed knowledge of the entire codebase but also strong intuition (or a lot of luck). To make the process more fun I’ve written a patch for ruby 1.9.3 that lets you visualize portions of the memory graph. ObjectSpace.each_object Ruby already comes with ObjectSpace which contains a few methods for analyzing yo
pry to the rescue
Introducing: pry-rescue: super-fast, painless, debugging for the (ruby) masses. What does it do? Whenever an unhandled exception happens in your program, pry-rescue opens an interactive pry shell right at the point it was raised. Instead of glowering at a stack-trace spewed out by a dying process, you’ll be engaging with your program as though it were still alive! The pry console gives you access
MVC is dead, it's time to MOVE on.
MVC is a phenomenal idea. You have models, which are nice self-contained bits of state, views which are nice self-contained bits of UI, and controllers which are nice self-contained bits of … What? I’m certainly not the first person to notice this, but the problem with MVC as given is that you end up stuffing too much code into your controllers, because you don’t know where else to put it. To fix
How to program like an explorer (with Pry!).
Exploring is a large part of what programmers do during the time when we’re not typing out code. Attempting to discover the correct way to do something, or to get a feeling for how something works is an essential part of the job, and for many people it’s also the most fun. While these aren’t the only examples, I classify the following as exploring: Trying out new libraries. Designing good APIs. De
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