[choffstein]

I am sort of dumb-founded that this is on the front-page of HackerNews. I know this isn't a constructive comment in any way, but this link is to a basic post that is going over the different between a list, a set, and a map?

Really?

[Sandman]

Exactly. And if you look at the OP's nick, you'll notice that he is the author of this blog post. As a matter of fact, if you check out his submissions (http://news.ycombinator.com/submitted?id=mainguy) you'll notice that he has a habit of submitting his blog posts to HN whenever he writes them.

Here's a message to you, mainguy: It's nice that you're blogging and all, but please, understand that not everything you write is HN-worthy.

Flagged.

[scorchin]

There are a number of people I know who have never touched Java and are being exposed to the eco-system through languages like Clojure and Scala and this kind of overview may be useful to them.

However, I agree that it's not worthy to be on the front-page of HN.

[snikolic]

These are not Java-specific data structures. If you already know these concepts -- and I don't see how you could write code without inevitably bumping into them -- the Java implementations should be intuitive and trivial to learn. Not to mention clearly documented.

[TheCapn]

The only reason I feel this is out of place here is because the very first thing the author says is "if you google[...]" which I would hope most hackers do before they start asking questions of others.

[thurn]

Especially since it's talking about old Java 1.4 collections, with no mention of changes in the last seven years!