Here are a few things that stood out to me the most in this great day at the greatest Flex conference on the planet:

• FlexUnit 4. Wow. Big update. Very nice new features. Time to get (back) into it. (presentation by Michael Labriola)
• Renaun Erickson’s Structured Log Testing framework. Another great, unexpected surprise. I didn’t really have plans to go to this session except that Renaun’s such a smart, friendly guy. And frankly, I’ve never really had enough interest to take a look at his work on this project so far. Boy am I glad I changed my mind. This is definitely a testing approach I can get into — much less overhead than other approaches I’ve seen. Getting going with it is only barely more work than adding trace() calls. And the result is certainly infinitely more valuable.

Considering I didn’t come to Indianapolis with any real interest in hearing more about testing…I’m surprised to find myself so excited by what I saw today. Today is a great day for Flex testing, that’s for sure.

I also got to hear some interesting ideas and future plans from Jacob Wright and Tyler Wright. (They made me a bit jealous — I wish I had a Flex programmer brother that I could see at conferences.) If you’re in Indianapolis, I recommend checking out their “write-in” session on the Flight Framework at 10am Tuesday in the Illinois East room.

Other less code-centric, but interesting, tidbits:

• Joe Berkovitz is an avid mountain biker.
• Ben Stucki has a sweet five-year-old daughter who likes deep-fried calamari and pasta, although she wasn’t able to finish her macaroni and cheese at Buca di Beppo, where apparently even the child meals are sized to feed 3-4 people.

Back in November 2005 (yes, 2.5 years ago!) I wrote an article about how data types and type checking work in ActionScript. ActionScript is different than many languages, in that the ActionScript compiler can be used for compile-time type checking (or not), and at runtime it is a strongly typed language, but it also has features of dynamically typed languages. This allows for some flexibility but also means that you have to be careful about testing your code (because the compiler won’t always catch everything).

My conclusion (not original by any means) was that unit testing is an important tool for ActionScript developers. I’ve tried a couple of ActionScript unit testing frameworks (ASUnit and FlexUnit). And finally getting to the point of this post, I was interested to learn today that the crew at Digital Primates is releasing an open source unit testing framework for Flex, known as “dpunit”.

(via Jesse Warden via Twitter)

The first details of the overarching “themes” for Flex 4 (“Gumbo”) have been posted on the Flex open source wiki. Four themes are listed (“Design in Mind”, “Accelerated Development”, “Horizontal Platform Improvements”, and “Broadening Horizons”) although currently only “Design in Mind” has any details.

And what nice details they are!

Here are a few highlights that stood out to me:

Flex applications however have gained a reputation for looking too similar to each other, as many developers choose to use the Flex default look and feel (known as Halo)…we have found that it remains too challenging to create a truly custom experience. It is therefore a priority for Gumbo to make easy customization of Flex application experiences the norm instead of the exception.

Major features…component and skinning architecture…make it easier to describe experience-oriented features such as states and transitions

Perhaps the most revealing part for existing Flex devs is the aptly named “Caveats and Reassurances” section:

Gumbo will remain compatible with Flex 3…Over multiple releases post-Gumbo we expect to deprecate the Halo model…Halo and new Gumbo components can co-exist…new MXML features may require some changes to your existing markup. However, you can make these decisions on a file-by-file basis

But my favorite line of all is in the “Related Work” section:

Provide a tool in which design-oriented users can easily customize the look of individual components or entire applications. Yes, this is Thermo. We’re not discussing it here.

Of course, this is all fairly in line with what’s been talked about previously, such as Thermo, MXML-G, Ely’s presentation about a new component structure with separation of model and view, etc. But it’s nice to see more information…and what’s not there but is hinted at is even more tantalizing.

I’ll definitely be watching that page for more information about “Design in Mind” and the other Flex 4 themes.

(via email from Matt Chotin — also see the announcement on the Flex team blog)

A couple of months ago at a SilvaFUG meeting I saw a demo of some graph visualization libraries — the kind of thing you use to create a graph showing nodes linked together according to various relationships.

The current “favorite” is the Flex Visual Graph Library (FVGL) Open Source Project.

Their Visual Graph explorer sample gives a nice overview of the functionality that’s available.

Anyway, I forgot to note this earlier, so I’m adding it now, though there’s a good chance this isn’t news to anyone who’s interested in this sort of thing.

(via email from Ted Patrick)