Hi! I'm Avdi Grimm, and this is my software development blog. More...
Books and Screencasts
Small plates of gourmet Ruby code.
32 Patterns for joyful coding.
The Making of Cowsays.com
Watch me build an app in Sinatra and Rails
Objects on Rails
A developer notebook on applying classic Object-Oriented principles to Ruby on Rails projects.
The definitive guide to exceptions and failure handling in Ruby.
- Emacs Reboot
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- Smalltalk Best Practice Patterns
- Study Notes
- Stuff Worth Buying
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Tag Archives: patterns
Once upon a time there was a small but prosperous village. This village had a reputation for being tech-centric. It was populated mainly by enterprise consultants, software architects, and agile coaches. The denizens of the village had grown wealthy and contented from … Continue reading
This post started out as the second half of an article on prototype-based OO design for Gregory Brown’s Practicing Ruby. For an introduction to the prototyped view of the object world, and to follow along on an adventure in making … Continue reading
Announcing the display_case gem, an implementation of the Exhibit pattern described in (and extracted from) “Objects on Rails”. Continue reading
I recently visited the Hashrocket offices in Jacksonville, and while I was there I did a Lunch & Learn talk on the topic of of breaking down too-big classes into smaller pieces. In it I went over pros and cons … Continue reading
I think by now we all know to prefer composition over inheritance. But in a language with a lot of options, what’s the best kind of composition to use? Composing an adventure Consider an adventure game, with objects representing player … Continue reading
In Smalltalk, you can “cascade” side-effectful calls to the same object using the semicolon (;) operator. E.g.: If I understand it correctly, the semicolon is effectively a K-combinator or “Kestrel”. I am jealous. Sure, we have Object#tap, but that’s awfully … Continue reading
I’m pleased to find Kent Beck shares my affinity for methods with a consistent cadence. In the next pattern I translate, he looks for a way to bring a uniform rhythm to a method that writes an object to a … Continue reading
Smalltalk Best Practice Patterns continues from the introduction with a brief explanation of patterns. Some notable quotes: About leveraging commonality: “large-scale software re-use has not proven to be the answer”. A lot of the mid-90s OO PR centered around the … Continue reading
The Ruby Rogues are reading Smalltalk Best Practice Patterns for next month’s book club, so I finally got around to ordering a copy. It’s high time, considering that in my experience it’s one of the most consistently recommended programming books … Continue reading