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Avdi Grimm

Hacker; code documentarian.

Ruby Guilty Pleasures

Here’s a bit of code that I both love and feel a bit guilty about.

This code locates a project’s “root directory” by ascending from the current directory until it finds a directory with a subdirectory named demos. (Don’t ask why this indicates the root directory). In case it never finds such a directory, it raises an exception.

Love, because it’s so expressive and uses so many of my favorite Ruby goodies.

Guilt, because it’s dense and not the most revealing code in the world. Nothing about it is “tricky” or obfuscated; it just packs a lot into a small space.

Ruby goodies featured in these three lines include:

A late-night rant about OOP and parametric dispatch

Update: this post was the product of an exhausted mind, and as such it misused terms, wasn’t well backed-up, and was generally incoherent. I’m withdrawing it until such time as I can articulate these ideas a little more competently.

I’m leaving this note here just to explain the absence. Here, have a photo of a mountain view:

image

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