Smalltalk with James Robertson

ESUG 2012 is happening in Gent, Belgium this year (August 27-31, with Camp Smalltalk on the 25th and 26th). Get all the details at the conference page.

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Today's Javascript 4 You looks at the each() function in JQuery. 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, jquery, tutorial

Andres Valloud has announced Smalltalks 2012, set for early November, 2012:

This would be a good time to get a calendar and try blocking November 7th through November 9th.  You see, we're inviting you to Puerto Madryn in beautiful southern Argentina so you can attend Smalltalks 2012! In the coming weeks we will send out research track calls for papers, calls for participation, and start the registration process. But get those presentations ready, Smalltalks 2012 will be here before you know it.  We look forward to seeing you there!

Today's Smalltalk 4 You wraps up our look at log4s with an examination of some of the more useful API methods we've brushed over. 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 of the useful API methods for log4s that we've brushed over in the last few screencasts. To get started, we'll add a Transcript appender to the root logger (which was set up in the ini file):

"logging apis"
logger := EsLogManager getLogger: 'root'.

"Add a transcript appender programmatically, but set at a higher level"
level := EsLogManager getLevel: 'Error'.
pattern := EsPatternLayout new: 'ڴe{ISO8601}: [%level] %message'.
transcriptAppender := EsTranscriptAppender level: level layout:  pattern.
logger addAppender: transcriptAppender.

One of the things you can do is ask a logger for all of the appenders it has:

"get all appenders"
logger allAppenders.

Which gives us this, if we inspect that line of code:

You can also get a specific appender by name:

"get the transcript appender"
logger getAppender: 'Transcript'

If we inspect that, we'll see the following:

Next we'll remove the Transcript appender. Note that we need to send the appender, not the name, as the argument. The VA 8.5 document is not clear about that:

"remove the Transcript appender"
logger removeAppender: transcriptAppender.

Now inspect the all appenders API again, and you should see:

Note that we're back where we started just the appender specified in the ini file. Finally, you can remove all appenders:

"remove all"
logger removeAllAppenders.

And inspecting the all appenders api yields:

And that about wraps it up for log4s. You should definitely peruse the documentation for more information

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, log4s, va smalltalk

Amber is not just an experiment - it's being used in production

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Squeak to be specific, in Uruguay and Argentina.

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Welcome to episode 72 of Independent Misinterpretations - a Smalltalk and dynamic language oriented podcast with James Robertson and David Buck.

This podcast was recorded by Bob Nemec and I at the end of day 3 of STIC 2012 - we spoke about the "big data" keynote that I missed, and touched on a lot of the other talks. There's a bit of background muzak playing - we recorded in the conference hall.

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: stic12, smalltalk

Welcome to episode 72 of Independent Misinterpretations - a Smalltalk and dynamic language oriented podcast with James Robertson and David Buck.

This podcast was recorded by Bob Nemec and I at the end of day 3 of STIC 2012 - we spoke about the "big data" keynote that I missed, and touched on a lot of the other talks. There's a bit of background muzak playing - we recorded in the conference hall.

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, stic12

Today's Smalltalk 4 You looks at logging with Toothpick in VisualWorks and Pharo (the code is available for VA, and Dolphin as well - and the VW code works in ObjectStudio, while the Squeak code is what I used in Pharo). 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:

The logging code used in the screencast, which you can find documented at metaprog:

"create a logger"
logger1 := TranscriptLogger new
			name: 'My first Logger'.

"where do logging events go"
logger1 format: SimpleLoggingFormatter defaultFormat.

"logging policy"
logger1 policy: (LoggingPolicy category: #debug level: #debug).

"register the logger"
(LoggingMultiplexer current)
	addLogger: logger1.

"Start the loggers"
(LoggingMultiplexer current) startAllLoggers.

LoggingEvent 
	category: #debug 
	level: #warn 
	message: 'using obsolete protocol'.

LoggingMultiplexer current stopAllLoggers

Technorati Tags: smalltalk, logging, toothpick

Today's Javascript 4 You looks at the error() function in JQuery. 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, jquery, tutorial

Today's Smalltalk 4 You looks at Toothpick for logging in VA Smalltalk. It's a lot like log4s, which we covered in other screencasts. The difference? Tootpick works across all the major Smalltalk dialects. 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 another look at logging in VA Smalltalk, but we'll use Tootpick - the cross platform logging solution for Smalltalk systems. First, download the ENVY package from Metaprog.

Once you have that, import the .dat file into your repository (see this screencast for an example of doing that). Then load SUnit support - it's an unlisted pre-req for the configuration map:

Once you have SUnit it, load the Toothpick config map:

Now we can proceed to use the same code that works in other Smalltalks. First, set up the logger (we'll use a Transcript logger here), and start the logging system:

"create a logger"
logger1 := TranscriptLogger new
			name: 'My first Logger'.

"where do logging events go"
logger1 format: SimpleLoggingFormatter defaultFormat.

"logging policy"
logger1 policy: (LoggingPolicy category: #debug level: #debug).

"register the logger"
(LoggingMultiplexer current)
	addLogger: logger1.

"Start the loggers"
(LoggingMultiplexer current) startAllLoggers.

That sets up the logger. Now we'll use it:

LoggingEvent 
	category: #debug 
	level: #warn 
	message: 'using obsolete protocol'.

A quick look at the Transcript shows that it works as we intended:

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, logging

Today's Javascript 4 You looks at the has() function in JQuery. 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, jquery, tutorial