Interesting Links – 21 October 2016

  • Everything is fine with JavaScript – hold on, I know, this is a Java blog! But it’s okay. Trust me. This post says a lot about JavaScript – but a lot of it is also very transferable to the Java ecosystem. One headline stands out: “If someone is holier-than-thou about technology choices, they’re wrong and you should ignore them.” (Notice how carefully I’m avoiding bringing up, say, MySQL or JSF here.)
  • From r/java: Externalizor says that it is a library for “efficient (fast and small) Java serialization using Externalizable interface.” No analysis provided of the potential security risks, and there’s no description of the format – but one nice thing about Externalizable is that the library allows users to leverage the standard Java serialization. (No comment on whether that is an actual good thing or not.)
  • User yawkat made a reference to JITWatch, a tool for understanding the behavior of the Java HotSpot Just-In-Time (JIT) compiler during the execution of your program. It’s not exactly trivial to use (you may have to use a debugging version of the JVM – see the instructions) but the information can be really cool.

Interesting Links – 5 Oct 2016

  • In Accounts is Everything Meteor Does Right, Pete Corey points out that Meteor‘s Accounts package dictates how user authentication and authorization will work, period, and that this removal of choice actually makes it entirely usable. Having wrestled with Shiro and Crowd and Spring Security and JAAS, it’s a point that’s hard to argue with – and while users of Shiro, etc., will probably say that those packages work as well as Accounts does, I’d have to humbly disagree, even while acknowledging how nice it is to have things like Shiro and Crowd. It’d be nice to have something that was just as drop-in for Java was Accounts is for Meteor. (Meteor is, BTW, a reactive application framework for NodeJS.)
  • User jdlee posted Maslow’s hierarchy of dev needs from Twitter – One gets the impression that the developer’s needs weren’t being met when designing that graph.
  • Also from jdlee, who was apparently crawling Twitter: “In Ruby, everything is an object. In Clojure, everything is a list. In Javascript, everything is a terrible mistake.”
  • User adimit gave high praise to Growing Object-Oriented Software Guided by Tests, saying that “it’s really simple but helping me write a test-driven app right now” and (coming from a Haskell background) “I’ve always hated OOP, but now I see how to do it properly, and it can be fun.” Anything that helps code quality improve is awesome, if you ask me.
  • From DZone: The Rise and Fall of Scala describes the apparent slow demise of Scala. The author backs it up, and it’s not a bad article; Scala’s awesome (I love it) but the criticisms are quite valid. Two areas where the author sees Scala remaining strong: Big Data and custom DSLs, definitely two Scala strengths.

Interesting Links, 17 Mar 2016

This list was originally supposed to be published over a week ago, but life’s been busy. Sorry, folks! Happy St. Patrick’s Day!

  • A succesful Git branching model considered harmful is a response to another article, A successful Git branching model. Both models can work; which one works better for you depends on a lot of factors that are likely to be unique to your development environment. (I’ve used both: I find the “cactus model” better, personally.)
  • The Four Software Engineering Personality Types describes four personalities (surprise) in development environment: Iron Man, Michaelangelo (the sculptor, not the Teenage Mutant Ninja Turtle), Yoda, and Captain America.
    • Iron Man is a tinkerer – get 90% of the project done, really quickly.
    • Michaelangelo is the detail-oriented, deep-diving programmer – the one who spends years on a given project, working out every detail. Michaelangelos’ projects tend to be unusable until they’re done – then they’re mission-critical and awesome.
    • Yoda is a teacher (or, if you like, a puppet with a hand up his… I mean, “a teacher.”) These are the guys who know tons of stuff, and show it to others, growing an organization and providing wisdom – and a great lever when they focus on doing specific tasks.
    • Captain America is the workhorse, the one who’ll roll up his sleeves and do the unpleasant work. Like in the comics, Captain America and Iron Man go well together; Iron Man rockets through the stratosphere, flashy and quick, and Captain America cleans everything up and makes it work well.
  • The Deep Roots of Javascript Fatigue goes into the rather chaotic waters of JavaScript development. Java’s in a great place: it’s dynamic enough that the community finds new and interesting ways to develop software all the time, but it’s also stable enough that you’re not having to relearn how to do everything every year, which is the situation you find in JavaScript. Excellent writeup, even if JavaScript development isn’t quite as dire as it might sound on the surface.
  • And now into our selection of excellent DZone content: Abstraction Considered Harmful..? has a bit to say about abstractions: they’re good, but sometimes they’re leaky (and therefore can be bad). But mostly they’re useful. From the article: “Abstraction, in and of itself, is not harmful. On the contrary, it’s necessary for progress. What’s harmful is relying on impenetrable barriers to protect our precious programmers from hard problems. After all, the 21st-century engineer understands that in order to play in the sand, we all need to be comfortable getting our feet a little wet from time to time.”
  • In Anatomy of a Good Java Test, Sam Atkinson (who will show up again in this same collection of interesting links) walks through a simple recipe for good testing. It looks like it’s based around JUnit4 and Hamcrest – hardly awful choices, but also not necessarily the state of the art (or the only way to write good tests). Good baseline, though.
  • In In Defense of the Fifth Year Developer, Matthew Casperson argues for some of the abstraction discussed earlier – the point’s not very clear, but complex code laden with abstractions is easier to test and verify, because it breaks problems down into identifiable units.
  • And back to Sam Atkinson: In Constructor vs. Getter: A Better Way he discusses the use of no-operation classes to wrap optional behavior (thus: NoOpNotifier, with methods that do nothing, instead of a null that has to be checked). This simplifies the code path (a good thing), and also helps with that pesky abstraction thing. Good article.