New Directions for the Cincom Smalltalk UI?
Cincom just hired Antony Blakey, who's done some cool add ons for VW in the past.
Technorati Tags: gui
ST 4U 283: DoesNotUnderstand Abuse
Today's Smalltalk 4 You looks at how it's easy to use - and abuse - #doesNotUnderstand: in Smalltalk. 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 #doesNotUnderstand: - and how you:
- Can override it to change the way an object behaves
- Should never do this lightly - it can create situations where your application fails in very hard to understand ways
First, we'll load the SimpleCounter application we used as an example for WebServices, and add this method:
doesNotUnderstand: aMessage | arg dict | dict := Dictionary new. dict at: #one put: 1. dict at: #two put: 2. dict at: #three put: 3. arg := dict at: aMessage selector ifAbsent: [nil]. arg := arg isNil ifTrue: [0] ifFalse: [arg]. self perform: #addValue: with: arg
Notice what this does - it treats a few strings as numeric arguments, and then converts anything it doesn't understand into a send of #addValue: with an argument of zero. That seems great - no more MessageNotUnderstood exceptions here. However, consider a more interesting object doing something like this, and passing values down the chain (maybe to a database, eventually). If you're lucky, you only get bad data. If you're unlucky, you get bad data and very, very odd application behavior.
Note the following workspace code:
counter := Counter new. counter one. counter two. counter three. counter thousand. counter goAway
All of that now "works" - or at least, none of those message sends break immediately. However, a follow on developer who sees the sending of #goAway, and looks for an implementor will find 26 nothing. That's the danger here. The code is now much more difficult to understand.
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.
Technorati Tags: smalltalk, va smalltalk, mnu
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WebSockets in Pharo
I am pleased to announce the first public release of Zinc WebSockets, an implementation of client and server RFC 6455 regular (ws://) and secure (wss://) WebSockets on top of Zinc HTTP Components and Zodiac TLS/SSL Streams. High level documentation can be found here.
Follow the link for a lot more information.
Technorati Tags: pharo, web sockets
Spoon 3 beta 1 released
Craig Latta has released the first beta for Spoon 3.
Technorati Tags: spoon
Storyboard
Storyboard is a multi-user agile planning board with drag and drop support. It shows how little code is needed to build a complete application with Deltawerken. It consists of 39 classes, of which 7 are announcements (very simple). It allows you to quickly enter stories, estimate and prioritize them. In addition to stories you can add issue, documentation and chore cards. The cards are colored based on their story state. More details can be entered/viewed by expanding the card. In the expanded view a change history is shown. Other users of Storyboard can be invited to participate.
Follow the link for more details and the screencast
JS 4U 204: Maps with Selective UI Overlay
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Today's Javascript 4 You looks at setting up maps with a selective level of map UI overlay. 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.
You can also watch it on YouTube:
Technorati Tags: javascript, maps
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OSDC Call For Participation
The Open Source Developer Conference in France is calling for participation:
The goal of OSDC.fr is to gather developers from various communities around groundbreaking technologies in the world of computer programming. After two editions on our own, we are now working together with the Open World Forum since 2011 to bring you an improved experience.
For the 4th edition of this conference in France, we want to unite the communities around open source development in all the free and open source languages, like Perl, Python, Ruby, PHP, Smalltalk and many more.
The event will be in Paris on October 12-13.
Technorati Tags: open source
ST 4U 282: Preparing a Pharo Image for Production
Today's Smalltalk 4 You looks at a few simple things you can do to prepare a Pharo image for deployment. 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:
Technorati Tags: smalltalk, pharo, deployment
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Twelve Years Ago
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I remember my wife calling me up to the bedroom - I was downstairs getting breakfast - the news was showing the first tower smoking, when bam - the second plane hit. The news anchor thought it was a small plane, but I fly a lot - I knew it was no small plane right off. The rest of the day was spent watching the news coverage, and getting my (then very young) daughter from school. Not that I thought she was in any danger, it's just that every other kid was being picked up, and the school wasn't telling the kids anything. My wife and I called the school, and ended up getting her simply so that she wouldn't keep wondering what the heck was going on. A lot has changed since then, but it's worth remembering where you were and what you were doing when all that went down. |
JS 4U 203: Maps with no UI Overlay
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Today's Javascript 4 You looks at setting the level of UI overlay for a Google map. 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.
You can also watch it on YouTube:
Technorati Tags: javascript, maps
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ST 4U 281: Less Common Config Options in VA Smalltalk (2)
Today's Smalltalk 4 You looks at a few more of the options in workspace preferences, focusing on the export (file out) functionality. 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 some more of the "hidden" settings in VA Smalltalk - specifically, ones that modify the file out format used by VA Smalltalk. This can be important if you are trying to port code from VA Smalltalk to another Smalltalk, such as Pharo or Squeak. Since Instantiations makes it easy for you to use VA if you are working on an open source project, this might be something that comes up.
Scroll down in the preferences workspace until you find this line:
System genericFormat: false.
Change the false to true, and then execute it:
If you filed out some code before making that change, and then again afterwards, you'll see some small changes in the files:
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.
Technorati Tags: smalltalk,, va smalltalk
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IM 93: Common Pitfalls (AAC)
Welcome to episode 93 of Independent Misinterpretations - a Smalltalk and dynamic language oriented podcast with James Robertson and David Buck.
James and David talk about some common pitfalls in Smalltalk development - dependency chains, DNU abuse, and so on.
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!
Technorati Tags: smalltalk
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IM 93: Common Pitfalls
Welcome to episode 93 of Independent Misinterpretations - a Smalltalk and dynamic language oriented podcast with James Robertson and David Buck.
James and David talk about some common pitfalls in Smalltalk development - dependency chains, DNU abuse, and so on.
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!
Technorati Tags: smalltalk
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Thu'umcast 32: Hearthfire (AAC)
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Welcome to episode 32 of "Thu'umcast" - a podcast where Michael Lucas-Smith, Scott Dirk, Austin Haley, Makahlua and I document our trials and tribulations in Elder Scrolls V: Skyrim Today's episode covers the latest DLC from Bethesda, Hearthfire. We also talk about the ongoing issues on the PS3 with the game, and speculate about what that might mean for future DLC on the XBox. If you liked our work on That Podcast, you'll probably like this. We intend to stay with the same idea - a gameplay podcast. If you don't want spoilers, don't listen - we are going to be talking about how we play the game, and what we ran across as we played. |
You can subscribe in iTunes (or any podcatcher) using this feed, or this one for the AAC edition. We'll add the iTunes specific links as soon as they are available. In the meantime, join the Facebook Group and follow us on Twitter. If you play on Steam, join the Steam Group. Like the music? Pay Sbeast a visit, we thank him for letting us use it!
Links to all episodes and other information can be found on the Thu'umcast page.
If you want to download the podcast directly, we've provided it in three formats:
Got feedback? Tweet us!. Enjoy the podcast, and we'll see you in Skyrim!
Technorati Tags: skyrim, hearthfire, thuumcast, elder scrolls
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Thu'umcast 32: Hearthfire
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Welcome to episode 32 of "Thu'umcast" - a podcast where Michael Lucas-Smith, Scott Dirk, Austin Haley, Makahlua and I document our trials and tribulations in Elder Scrolls V: Skyrim Today's episode covers the latest DLC from Bethesda, Hearthfire. We also talk about the ongoing issues on the PS3 with the game, and speculate about what that might mean for future DLC on the XBox. If you liked our work on That Podcast, you'll probably like this. We intend to stay with the same idea - a gameplay podcast. If you don't want spoilers, don't listen - we are going to be talking about how we play the game, and what we ran across as we played. |
You can subscribe in iTunes (or any podcatcher) using this feed, or this one for the AAC edition. We'll add the iTunes specific links as soon as they are available. In the meantime, join the Facebook Group and follow us on Twitter. If you play on Steam, join the Steam Group. Like the music? Pay Sbeast a visit, we thank him for letting us use it!
Links to all episodes and other information can be found on the Thu'umcast page.
If you want to download the podcast directly, we've provided it in three formats:
Got feedback? Tweet us!. Enjoy the podcast, and we'll see you in Skyrim!
Technorati Tags: skyrim, elder scrolls, thuumcast, hearthfire
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Hearthfire
Thu'umcast will be back sometime later today - episode 32 is recorded, and we'll be posting it soon.
Technorati Tags: skyrim
