Jeff Perrin :: Archives for the 'Uncategorized' Category

Javascript Syntax Highlighting

A few months ago I toyed with the idea of doing syntax highlighting with javascript. I’m sure there’s several published solutions out there that do the same thing, but I figured I’d give it a go myself, mainly to practice up on my meagre javascript skills. I set out with the following goals:

1. Highlight the code in a completely unobtrusive manner.
2. Use absolutely no inline markup.

Basically, I wanted to be able to paste in the following markup…

<code class="csharp">
	private void Page_Load(object sender, System.EventArgs e)
	{
		 LoadEntity();
	}

	private void LoadEntity()
	{
		 User user = new User();

		 /*
			  Get the id of the entity from the request
		 */
		 if( this.RequestedEntityID > 0 )
		 {
			   user.ID = this.RequestedEntityID;
			   BrokerFactory.Fill( user );
		 }

		 //Load the appropriate view
		 EntityControl cont =
			(EntityControl)LoadControl( "EditStaff.ascx" );

		 cont.BoundEntity = user;
		 this.phEntity.Controls.Add( cont );
	}
</code>

…and have the syntax highlighting just work. I currently have
some test code that
is partly working (although not in IE, there seems to be a problem with setting the text to be pre-formatted).
View the source to see what I’m up to. It should be easy to extend it to check for the type
of highlighting that’s required based on the class of the code tag.

In closing, my main reason for posting this is that I’d like to see this working,
but just don’t have the time or energy to finish it off in the near future. So if anyone knows of
an existing solution that works in the same way, or wants to continue on with this implementation, feel free to
let me know.

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Rock Invoices with Blinksale

After just recently entering the ranks of self-employed nerds-for-hire, (more on that later) I was faced with the looming issue of billing. Now, when I was last seen firing out invoices (in an entirely different industry), I was utilizing the fantastically esoteric templates found within everybody’s favourite spreadsheet application; Lotus 1-2-3. Since I now know that spreadsheets are for accountants and other forms of masochistic freaks (sorry Kirk), I was at a loss trying to determine how to keep track of my invoices. Time ticks on by, as it is wont to do, and I found myself less than a week away from the end of the month. Colleagues admitted to using Quickbooks, but caught up in my rabid fear of anything that is “accounting”, I balked at that idea. Thankfully, just in the nick of time, I was saved by Blinksale. Go and read about it for yourself.

I think I’m saved.

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O/R Mapping: Attributes vs. XML For Mapping

Steve Eichert posed an interesting question regarding O/R mappers and the use (or lack thereof) of attributes to define the details of mapping business entities to relational database tables. He specifically asked why attributes are good enough for Indigo, but not for O/R mappers? Paul Wilson, the creator of WilsonORMapper (which I think is currently one of the best mappers in the .NET world) replied with a couple of points describing why he prefers to use XML:

1. Persistence is external to my entity objects — I can and do use my entities differently at times.
2. Makes it easier to change the O/R Mapper I use — not totally seamless, but easier if pure POCO.
3. Table and field names can and do vary at times — customers of my apps do have different schemas.
4. Makes it easier to reuse my entity objects — the same business logic can be used in different ways.
5. Personal preference — focus on business only — I just don’t see the point of attribute clutter.

While I’m certainly not opposed to either approach, and think that each has its merits, I believe that the benefits of an attribute-based approach are somewhat under-represented. I also think they are misrepresented in several ways as well. I’ll offer up this point by point breakdown:

1. “Persistence is external to my entity objects — I can and do use my entities differently at times.”

   Persistence is indeed external to the inner workings of a business object. However, attributes are metadata, and do not define any behaviour. Marking a business object as [Serializable()] is exactly the same. The fact that it can be serialized has nothing to do with the business object. You’re just marking it for some other process, in case this information might be useful elsewhere. There is no difference.

2. “Makes it easier to change the O/R Mapper I use — not totally seamless, but easier if pure POCO.”

   I’m willing to tag this argument as YAGNI. Using XML because you might switch out an O/R mapper for another is stretching things somewhat.

3. “Table and field names can and do vary at times — customers of my apps do have different schemas.”

   This can easily be done using attributes as well. [TableColumn(”databaseColumnName”)] does this nicely.

4. “Makes it easier to reuse my entity objects — the same business logic can be used in different ways.”

   Once again, attributes are just metadata. They should have absolutely no bearing on how an object is actually used. Unless you’re doing something completely wacky with your attributes (like basing business functionality on them), this argument doesn’t hold water.

5. “Personal preference — focus on business only — I just don’t see the point of attribute clutter.”

   Point granted. Attributes can clutter up a class file to some degree. But the flip side of this, is that it’s easy to see anything related to your object at a glance if you use attributes, by going to the source file. Everything you need is right there, in one place, not spread out over multiple files. This is an often overlooked point in my mind.

So there you have it. In my mind, it really does just boil down to personal preference (or the preference of the dude writing the O/R mapper). Do you want all your information in one place where it’s easily accessible, or spread out over multiple files to keep things nice and tidy? Take your pick.

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Things That Make Me Chuckle

So my buddy Buckles was apparently frustrated with his blog at some point (just look at the title in the upper right). Apparently he forgot to change the title, and then left for a two week vacation. Now he’s on page two of a Google search for “Shit Paste”. Unintended consequences are sweet.

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I Want to LearnASP

Have you ever thought to yourself “Hmmm… What I need here is an uber class that does database access, file access, logging, e-mailing, Amazon/Google searching, and xml processing”?

More importantly, would you take lessons from a person who wrote one?

Enter… The Utility Belt

Go ahead! Copy ‘n’ paste it and use it right away (actually, it takes about 1 minute to highlight all the code without using ctl-a). It’s 6116 lines of kitchen sink goodness for yer lernin’ pleasure.

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Microsoft CMS Developer Wanted

My current employer is looking for a developer with solid C#/VB.NET, ASP.NET, and Microsoft Content Management Server skills. The position is located in Calgary, Alberta, Canada; you must live in Calgary (or be willing to re-locate) to be considered for the position.

Pangaea’s a solid company to work for, and has a close relationship to Microsoft. If you love playing with the latest Microsoft technologies, it’s the place to be in Calgary. You’ll get a highly competetive salary, full benefits (immediately, not after 3 months), a private work space with walls you can write on, the list goes on and on. If you have any additional questions, don’t hesitate to e-mail me.

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MonoRail Looks Soooo Money

I found MonoRail after following a link buried in the comments of Zac Bowling’s Hot or Not post from a couple of days ago. Now I’m wondering how I managed to go so long without hearing about it before…

Obligatory what the heck is he talking about quote from the Castle website:

MonoRail (former Castle on Rails) is an attempt to provide a port of Action Pack for .Net. The Action Pack way of development is extremelly productive, very intuitive and easily testable.

There’s also a few Flash Demos you can watch. Definitely worth trying out.

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Excellent XP/Agile Reading

I worked with Ted O’Grady for a very brief period of time on the Inform Alberta website over a year ago. It was the first Agile project I’d ever encountered “in the wild”, and what Ted was doing with the project was fascinating to me. Imagine my surprise when I stumbled across his personal site today, and found out he has a blog.

Not only does he have a blog, but it’s a darn good one. I really like the short, concise writing style, and appreciate that he mananges to put something helpful or meaningful into every post. Go read. Now.

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Response to Objections of Agile Development

This paper by Jim Highsmith (Wow. I almost camel-cased his last name. I think I need a few days off…) provides a pretty diplomatic rebuttal to a few common objections people have with Agile Processes. The Cole’s Notes version:

• Most objections are based on misconceptions of Agile processes.
• People confuse XP with Agile. XP is one form of Agile development.

Via Clarke Ching

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NUnit and App.config Files

I just found this post by Darrel Norton:

Keeping NUnit config files in sync

It details how to go about setting up a post-build event to copy an App.config file to the proper directory (while renaming it) so that your test assembly can get configuration information. I struggled with this for a few minutes today.

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Interesting Initial Comparison: Ruby vs. Java

I finally decided to take a look at Ruby on Rails yesterday. It looks incredibly slick, with most of the benefits appearing to stem from the dynamic nature of Ruby itself, as well as a focus by the developer(s) on simplicity. Compare a Ruby on Rails beginner tutorial with it’s Java/Spring equivalent:

Spring
Ruby on Rails

All I can say is.. Wow. You be the judge. (Keep in mind that Spring is a lightweight java framework)

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Managing Product Development

Via Jeff Atwood, go check out the Managing Product Development blog. In particular, the Schedule Games series of posts is interesting. Consider me subscribed (my first new subscription in over 2 weeks!).

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if( usbWatchCount >= 2 )

Continuing my precipitous decent into the bowels of Nerd-dom, I have recently come into possession of my second USB watch. It was given to Jackie as a gift, and I have no idea what the brand is, but it’s a lot nicer looking than the one I already had. I don’t know what I’ll store on it, exactly, but who really cares?

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One More Important Thing

We’re getting hitched!

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Nifty Corners are… Nifty!

This has to be one of the raddest hacks I’ve ever seen. Nifty Corners is a super easy to use javascript library that makes rounding the corners of your html elements as simple as adding a few lines of code.

window.onload=function(){
if(!NiftyCheck())
return;
Rounded(”div#nifty”,”all”,”#FFF”,”#D4DDFF”,”smooth”);
}

No more fixed-width rounded sidebars that break when text sizes are increased or images are too large. No more extra markup and bloated css files trying to work around the previous problem either. Oh, and did I mention the hack works without images? Yeah, no images, it’s all done client side with javascript. The best part is the degradation. If somebody has javascript turned off, they just don’t get the nifty rounded corners. Big deal, eh? I can totally see myself abusing this over the next few months.

Here’s some live examples from the article:

• Navigational “leaves”
• Try adjusting your font size with this example
• The denouement…

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