My Secret Life as a Spaghetti Coder
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Last week, hgs asked,
I find it interesting that lots of people write about how to produce clean code, how to do good design, taking care about language choice, interfaces, etc, but few people write about the cases where there isn't time... So, I need to know what are the forces that tell you to use a jolly good bodge?
I suspect we don't hear much about it because these other problems are often caused by that excuse. And, in the long run, taking on that technical debt will likely cause you to go so slow that that's the more interesting problem. In other words, by ignoring the need for good code, you are jumping into a downward spiral where you are giving yourself even less time (or, making it take so long to do anything that you may as well have less time). More...

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Suppose you want to share some data that one object produces with another object as the consumer. How would you go about doing that?

If you took a straightforward approach, you might have Producer call consumer.method("data") and pass it the data that way. On the other hand, you could have Consumer get the data it needs by requesting it from Producer with something like this: myData = producer.getData().

However, perhaps Producer and Consumer shouldn't know anything about each other. Then you might introduce an Intermediary that gets the data from Producer and passes it to Consumer with something like consumer.myData = producer.getData()

Now if you want to get really creative, you could make Producer write its data to an XML file, and then have Consumer read the data from there.

But why?

Disagreements and horror stories are encouraged below.


Something's been bugging me lately about ASP.NET: I can't seem to remember to type runat="server" every time I write a line of code to display a server control.

For normal HTML elements, I understand the necessity of using the attribute when you want that element to be tied to the server. But I can't seem to figure out any other way to run a control that's been prefixed with the namespace asp.

So why does ASP.NET require such a silly, useless bit of text for everything it does?

I can think of three reasons: More...


At the beginning of this week's chapter from My Job Went To India, Chad Fowler relates a story about Rao, a "mind-reading" programmer who could pick up on the subtleties in conversations and implement code before you realized you had asked for it.

Both when I first read this, and the second time around, alarms went off in my head: "What about YAGNI?" Why would you implement something that wasn't asked for? If you are wrong, you could be relieved of your position for wasting time and money.

Thankfully, Chad addressed my concerns. It turns out, More...


Here's a WTF I ran into the other day (partially pseudocode):

XmlDataDocument goto = new XmlDataDocument();
goto.Load(".\\locations.xml");

XmlNode gotoThisUrl;
if(referer == "http://www.someplace.com/directory1")
{
  gotoThisURL = goto.SelectSingleNode("gotoOnDirectory1");
}
else if (referer == "http://www.someplaceelse.com/directory2")
{
  gotoThisURL = goto.SelectSingleNode("gotoOnDirectory2");
}

Response.Redirect(gotoThisURL.InnerText.Trim(), true);

It was actually a bit more complex than that (probably 3x as many lines), but with the same purpose. There were literally two places from which to choose to direct the request. And no, the application wouldn't take incredibly long to compile. I felt like it was quite a bit of overkill.


We could all stand to be better at what we do - especially those of us who write software. Although many of these ideas were not news to me, and may not be for you either, you'd be surprised at how you start to slack off and what a memory refresh will do for you.

Here are (briefly) 10 ways to improve your code from the NFJS session I attended with Neal Ford. Which do you follow? More...


YAGNI, KISS, and the simplest thing that could possibly work reared their heads again (at least for me) at the April meeting of the UH Code Dojo. Luckily for me, a couple of our members bailed us out of what could have been a disaster - greatly complicating a simple problem. (And my apologies for waiting so long to write this up - with finals and final projects all due these couple of weeks, I've just been super busy, as all you other students know all too well).

We decided on using a recent Ruby Quiz as our problem: Microwave Numbers. The basic idea is: given a number in seconds, identify the most efficient way to push the buttons (based on distance) to get that number of seconds (the actual problem left some room for fuzziness, but we didn't bother with that). This boils down to calculating the distance between any two numbers on the pad, and determining if the number of seconds is greater than 60 (in which case, there will be 2 options to check). Well, at least thats what we came up with. More...


This post at Worse Than Failure made its rounds today on the Yahoo pragprog group and CFCDev mailing list, and I had a response to one of the emails that I also thought was worth blogging. On pragprog, the discussion was turning into the question, "where do you draw the line on knowing when to eliminate literals?" (not a direct quote) Someone brought up the idea to use YAGNI and DRY as guiding factors: "If you need the number in just one place, just use the number there. YAGNI," and "If you find the number being repeated so that you would have to change it in several places, then externalise it so that I change in just one place is needed. DRY." More...


One of the great benefits of using a framework (in the general sense) is the freedom in portability it often gives you. Rather than writing your own Ajax routines which would need to handle browser incompatibilities, you can rely on Prototype/Scriptaculous, AjaxCFC, Spry, or a seemingly infinite number of Ajax frameworks available. We see the same phenomenon in our use of ColdFusion, which uses Java to be cross-platform. And, you can get the benefit for databases by using a framework like Transfer or Reactor or ActiveRecord in Ruby (all also have a slew of other benefits). In general, we're simply seeing an abstracting away of the differences between low-level things so we can think at a much higher level than "oh crap, what if they're using Lynx!" (Ok, I'm doubting any of those Ajax frameworks fully support Lynx =), but you get the picture) More...


On Monday (Jan. 29, 2007) we had our first meeting of the UH Code Dojo, and it was a lot of fun. Before we started, I was scared that I'd be standing there programming all by myself, with no input from the other members. But, my fear was immediately laid to rest. Not only did everyone participate a lot, one of the members, Matt (I didn't catch his last name), even took over the typing duties after about 45 minutes. That turned out to be a good thing - since I still can't type worth a crap on my laptop, and he was much faster than me.

Now, it had only been a couple of months since I last used Java - but it still amazes me how little time off you need to forget simple things, like "import" for "require." I found myself having several silly syntax errors for things as small as forgetting the semicolon at the end of the lines.

Overall, we started with 7 people, and had 5 for most of the meeting. We finished with four because one person had tons of homework to do. It seemed like those five of us who stayed were genuinely enjoying ourselves.

In any case, we decided to stick with the original plan of developing a tic-tac-toe game. You would think that a bunch of computer scientists could develop the whole game in the two hours we were there. But, you'd have been wrong.

I came away from the meeting learning two main points, which I think illustrate the main reasons we didn't complete the game:
  1. YAGNI is your friend
  2. Writing your tests first, and really checking them is very worthwhile
More...



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