Recent CodeSOD

Code Snippet Of the Day (CodeSOD) features interesting and usually incorrect code snippets taken from actual production code in a commercial and/or open source software projects.

Mar 2019

Swing and You're Out

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George G was hired to do some UI work for a company which sold a suite of networking hardware. As networking hardware needs to be highly configurable, George was hired on to do “some minor tweaks” to the UI. “It’s just some sizing issues, fonts, the like. I’m sure you’ll do something to the stylesheets or whatever,” said the boss.

The boss didn’t know what they were talking about. The UI for some of the products was a web based config tool. That was their consumer-grade products. Their professional grade products used the same Java program which was originally released 15 years earlier. There were no stylesheets. Instead, there was an ancient and wobbling pile of Java Swing UI code, maintained by a “master” who had Strong Opinions™ about how that code should look.


Remove This

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Denae inherited some 90s-era GUI code. The original developers have long since gone away, and the source control history has vanished into oblivion. In the 90s, the Standard Template Library for C++ was still very new, so when Denae needs to debug things in this application, it means doing some code archaeology and picking through home-brewed implementations of common data structures.

Denae’s most recent bug involved understanding why some UI elements weren’t updating properly. The basic logic the application used is that it maintained a List of GUI items which need to be repainted. So Denae dug into the the List implementation.


Ancient Grudges

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Ignoring current events, England and the rest of Europe have had a number of historical conflicts which have left a number of grudges littered across the landscape.

Andro V lives in Norway, but is remotely collaborating with an English developer. That English developer wants their peers to know that Sweyn I and Thorkell the Tall’s invasions of southern England will never be forgotten.


The Value of Your Code

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“We know that governmental data-systems aren’t generally considered ‘cutting edge’ or ‘well architected’, but we’ve brought together some top flight talent, and we’re building a RESTful architecture that guarantees your code gets nice, easy-to-consume JSON objects.”

That’s what Oralee B. was told when she was hired to work on it. The system owned pretty much the entirety of the municipal data management market, tracking birth certificates, marriage certificates, death certificates and pet licenses for nearly every city in the country. JSON is so simple, how can you screw it up?


The God Page

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Mike inherited a data-driven application. Once upon a time, it started out pretty well architected. Yes, it was in PHP, but with good architecture, solid coding practices, and experienced developers, it was simple and easy to maintain.

Time passed. The architects behind it left, new developers were hired, management changed over, and it gradually drifted into what you imagine when you hear "PHP app" in 2019.


Offensively Defensive Offense

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Sometimes, the best defense is a good offense. Other times, the best offense is a good defense. And if you’re not sure which is which, you’ll never be a true strategic mastermind.

Tina’s co-worker understands that this is true for defensive programming. Always, always, always catch exceptions. That’s a good defense.


Switching to Offshore

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A lot of ink has been spilled talking about the perils and pitfalls of offshore development. Businesses love paying the wage arbitrage game, and shipping software development tasks to an outside vendor and paying half the wage they would for a dedicated employee.

Of course, the key difference is the word “dedicated”. You could have the most highly skilled offshore developer imaginable, but at the end of the day: they don’t care. They don’t care about you, or your business. They don’t care if their code is good or easy to maintain. They’re planning to copy-and-paste their way up the ranks of their business organization, and that means they want to get rotated off your contract onto whatever the next “plum” assignment is.


Virtually Careful

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Inheritance is one of those object-oriented features whose importance is perhaps overstated. When I was first being introduced to OO, it was a lot of “code reuse!” and “polymorphism!” and “code reuse!” In practice, inheritance is usually a way to tightly couple two different classes and create more headaches and rework in the future.

That’s why many OO languages favor interfaces, and why the classic Gang-of-Four patterns emphasize the importance of composition in many situations. And, because inheritance can make things complicated, most languages also require single parent inheritance.


For Each Parallel

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Parallel programming is hard. For all the advancements and tweaks we've made to our abstractions, for all the extra cores we've shoved into every CPU, deep down, software still carries the bias of the old uni-tasking model.

Aleksei P works on a software package that is heavily parallel. As such, when interviewing, he talks to candidates about their experience with .NET's Task objects and the async/await keywords.