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Just interviewed a guy with ~8 years of experience:
Me: *Asked him to write a simple algo logic on a paper*
Him: I don't do much of algo design. I'm much of a design patterns and software design guy.
Me: How would you design a singleton class in Java?
Him: *writes a sloppy code*
Me: Hey, thanks for your time. Our HR will get back to you with further updates.
Moral: Interviews can be very short when the candidate doesn't code.
15 -
As a Java developer, reasons to kill other programmers:
- static mutable variables
- WRITING to static mutable variables
- API call with Framework X didn't work. Add Framework Y along with X and try that. Wrap X in try/catch statement. Catch block fires framework Y.
- six, seven, ten levels of nested code. Zero thought put in organization
- 6K LOC Java files
- spring (singleton? Maybe) object assigning values in static mutable (see pt.1)
- a couple of unit tests in code base that no longer work. Zero unit tests in new code
- unit testing disabled in CI pipeline
- empty catch blocks
- pass mutable data between threads. Modify in various places concurrently.3 -
Learning to use Singletons in Java. Then reading online that it might be an antipattern. Software Engineering ... 👌10
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@dfox - Idea for weekly rant - worst candidate that showed up to a job interview.
Had a solid resume, claimed to be a Java king, top notch. First question after he sat down: How to create a thread-safe singleton in Java using double-checked locking?
Guy didn't know the answer. - NEXT!14 -
Here's a fun fact (which actually will be accompanied with a source) about node.js. When you import or require a module it will be imported as a singleton. Or put another way, ```export const Foo = { };``` is one of the simplest* and most readable singletons you can have in that runtime. And of course here's the thing you always should be asking for when people make a claim like this https://nodejs.org/api/...
So why write this? Well some of you might feel inclined to write a medium (or other) post about "design patterns in Javascript" where you basically just translate the GOF book from Java to Javascript and now you have something that isn't just awkwardly translated Java code!
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