Today's Javascript 4 You. Today we look at using JQuery selectors to conditionally grab page elements. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube.
Join the Facebook Group to discuss the tutorials. You can view the archives here.
To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
Michael Lucas-Smith has a detailed write up on a new Quantities library he's created in VisualWorks. It's taken inspiration from part of the Boost library - you can get details at the link. What's the motivation?
So with these two great examples of units and quantities to go off of, I set about trying different variations for describing quantities in VisualWorks generically. I wanted to allow it to blend with the existing (and future) implementation of Duration. I *really* wanted to know if there is any design impact on Duration that I need to know about now before I go and change its implementation in VisualWorks 7.9.
After going through many iterations, I ended up with a design using the same trick as Measurements, but with more capabilities, such as instantiating Duration when dealing with the Time dimension. Or instantiating an Angle when you’re dealing with radians, degrees and gradians. There is of course the Temperature class too - but I won’t bore you with the details of that one
Today's Smalltalk 4 You looks at creating a configuration map. In ENVY, configuration maps are how you create reproducible, loadable configurations of software in the version control system. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
You can also watch it on YouTube:
Today we'll take the CounterApp and CounterTestsApp applications, and package them up into a single loadable Configuration. In VA Smalltalk, that's accomplished with an ENVY construct called a ConfigurationMpa. Using the Tools menu, select Browse ConfigurationMaps:
To create a new Config Map, select the Names menu, and then click on Create...:
Give the new Config Map a Name:
Now, in the rightmost pane at the top, right click, and select Add.... That will bring up a window, allowing you to add applications to the Configuration map:
We'll move CounterApp and CounterTestsApp over to the right, and click the Ok button:
Finally, using the menu in the second pane, give your Config map a version number - and that's it - you've got a loadable configuration. We'll be going into more depth on Applications and Config Maps in future tutorials, we've barely scratched the surface so far!
Need more help? There's a screencast for other topics like this which you may want to watch. Questions? Try the "Chat with James" Google gadget over in the sidebar.
We have a pretty decent sized group of Smalltalkers where I'm working now, in the Grand Prairie area (Texas). I know there are other Smalltalk shops in the Metroplex, so it occurs to me that a local user group is something that could work. I'm trying to get meeting space set up where I work - anyone else in the area interested in helping organize such a thing? If so, contact me and let's see what we can do.
Reasonable people can have completely honest debates about the appropriate size of government, and about the proper roles and responsibilities of that government. However - when you have an education department breaking down doors, can't we all agree that there's something very wrong here?
Update: Looks like the link above is broken (did someone lean on the news outlet?). You can get the "defense" from the Education department here, but my question remains - why on earth is the education department sending para-military units out to execute warrants?
Today's Javascript 4 You. Today we look at using the JQuery to add a CSS attribute to a page element. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube.
Join the Facebook Group to discuss the tutorials. You can view the archives here.
To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
I want to announce the release of Google Analytics Tracker, a small tool we make for getitmade.com (Nick Ager's project), to allow us to get analytics data. Right now is very simple, it just give us page visits data, but can be used as a foundation to get a lot more info.
To give it a spin, load up ConfigurationOfGoogleAnalyticsTracker in Pharo.
Craig Latta is using WebDAV with Spoon, in order to enable Smalltalk code accessibility as if it were all in files. I like the idea a lot, and it would be interesting to see that sort of thing done for one of the large Smalltalk implementations.
Today's Smalltalk 4 You looks at how easy it is to set up a RESTful HTTP service using the KOM Http server for Pharo (or Squeak). The example I'm using comes from Guillermo Polito. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
Looks like Pandora is getting some competition in the streaming music space - and for people who travel, Spotify will have the added benefit of giving you trans-atlantic access (assuming that stupid record label deals don't get in the way of that, a real possibility):
Spotify has signed an American distribution deal with Universal Music Group, the world’s largest music label. The pact means that the streaming music company now has U.S. deals in place with three of the four largest labels, making it likely that the European company will finally be able to move across the Atlantic this summer.
I'm not sure what this offers me over what Pandora does, but the reviews for Spotify have been good. The more the merrier!
Space Shuttle Atlantis is scheduled to complete its final voyage with a pair of space-ready iPhone 4's aboard. After docking with the International Space Station, astronauts use the phones, not to become Foursquare's Mayor of Space, it seems, but to run an app called SpaceLab for iOS.
Maybe AT&T needs to launch a satellite specifically to provide ISS based roaming :)
This week I have another session from Smalltalk Solutions 2011 - John McIntosh's keynote address, about the attempts to get Scratch approved for the app store.
You can subscribe to the podcast in iTunes (or any other podcatching software) using this feed directly or in iTunes with this one.
To listen now, you can either download the mp3 edition, or the AAC edition. The AAC edition comes with chapter markers. You can subscribe to either edition of the podcast directly in iTunes; just search for Smalltalk and look in the Podcast results. You can subscribe to the mp3 edition directly using this feed, or the AAC edition using this feed using any podcatching software. You can also download the podcast in ogg format.
If you like the music we use, please visit Josh Woodward's site. We use the song Troublemaker for our intro/outro music. I'm sure he'd appreciate your support!
If you have feedback, send it to jarober@gmail.com - or visit us on Facebook - you can subscribe in iTunes using this iTunes enabled feed.. If you enjoy the podcast, pass the word - we would love to have more people hear about Smalltalk!
This week I have another session from Smalltalk Solutions 2011 - John McIntosh's keynote address, about the attempts to get Scratch approved for the app store.
You can subscribe to the podcast in iTunes (or any other podcatching software) using this feed directly or in iTunes with this one.
To listen now, you can either download the mp3 edition, or the AAC edition. The AAC edition comes with chapter markers. You can subscribe to either edition of the podcast directly in iTunes; just search for Smalltalk and look in the Podcast results. You can subscribe to the mp3 edition directly using this feed, or the AAC edition using this feed using any podcatching software. You can also download the podcast in ogg format.
If you like the music we use, please visit Josh Woodward's site. We use the song Troublemaker for our intro/outro music. I'm sure he'd appreciate your support!
If you have feedback, send it to jarober@gmail.com - or visit us on Facebook - you can subscribe in iTunes using this iTunes enabled feed.. If you enjoy the podcast, pass the word - we would love to have more people hear about Smalltalk!
Today's Smalltalk 4 You looks at the VAST Goodies site - a VA Smalltalk seaside powered side used to share community provided VA code. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube. To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
You can also watch it on YouTube:
Today we'll look at the VAST Goodies site - it's both an example of a VA Smalltalk application (using Seaside), and a useful site for getting (and contributing) community provided Smalltalk code. In order to make use of it, you first need to download the tools - which will also serve as an example of how to download and load code from the goodies repository into VA Smalltalk. First, visit vastgoodies.com:
Scroll down, and select the Tools link. That will select the configuration map to download in the view. Scroll back up, and select the Download link:
Next, open up a Configuration Map Browser, and under Names, select Import, all versions.
This will pop up a dialog that you can easily misinterpret. To select an import file, just don't enter anything and hit ok:
Now select the file and hit ok in the standard dialog:
That added the file to your ENVY library - but an attempt to load from the Configuration Map Browser you have open fails - due to a pre-req that wasn't specified:
Go back to the feature import tool, select SST HTTP, and move it to the right. Then load that:
Now return to the Configuration Map Browser and load the Goodies tools - they'll come in just fine now:
That gets the tools in - we'll look at how to make use of them in another tutorial.
Need more help? There's a screencast for other topics like this which you may want to watch. Questions? Try the "Chat with James" Google gadget over in the sidebar.
I've been hearing nothing but negativity about Civilization V
since it came out - so last night, when my daughter sounded interested in it, I couldn't muster any enthusiasm. On the other hand, I haven't seen it myself so - she created a Steam account and downloaded the Mac version. So far, she likes it a lot. Maybe I'll give it a try, so we could play multi-player....
Today's Javascript 4 You. Today we look at a specific type of page animation with JQuery - fading content out. If you have trouble viewing it here in the browser, you can also navigate directly to YouTube.
Join the Facebook Group to discuss the tutorials. You can view the archives here.
To watch now, click on the image below:
If you have trouble viewing that directly, you can click here to download the video directly. If you need the video in a Windows Media format, then download that here.
David Buck has been working on a project to make the positioning of VisualWorks widgets on a canvas a whole lot simpler. There's a video demo at the link - pretty cool stuff.
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since it came out - so last night, when my daughter sounded interested in it, I couldn't muster any enthusiasm. On the other hand, I haven't seen it myself so - she created a Steam account and downloaded the Mac version. So far, she likes it a lot. Maybe I'll give it a try, so we could play multi-player....
