Coding

Transaction Integrity with Connected Systems

  • Reading time:4 mins read

Broken pencilWith .NET Interoperability around, it’s very likely you’ll be synchronously calling external web services from C/AL, to exchange data. I won’t go into discussing whether or not this kind of architecture is good (my own position is that it isn’t), you may end up having situations where your C/AL code simply makes a synchronous call to external systems, such as web services.

Any external call is an expected point of failure. An important question you must always have in mind when calling external functions is transaction integrity. When writing code that targets only NAV, the structure of code is largely irrelevant, as long as you are not using COMMITs (which is another thing you should avoid at all costs). However, as soon as you introduce external calls, the structure becomes critically relevant. Critically relevant.

I’ve talked about this during my 2012 NAV TechDays session, and I promised I’d blog about it – so, here it goes.

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10 reasons that make design absolutely necessary

  • Reading time:12 mins read

Unfinished buildings, by net_efekt (on Flickr)Design is one of a kind. Other phases in Sure Step are understood and accepted as good and necessary. But design, do we really do that? Is it really necessary? Who’s going to pay for it? Does the customer really need all those documents? Instead of writing documents, you could have it developed in the same, or less time. And so on and so forth.

As a matter of fact, if you asked me to pick one single most important phase in a Sure Step project, then it’s the design. No second thoughts here, whatsoever.

Here I list the ten most important reasons that I believe make design absolutely indispensable.

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Development Best Practices

  • Reading time:2 mins read

image “Best practices” is one of those beloved and hated concepts. There are people who just embrace “best” practices for the sake of their bestness. And there are people who just shun them for the very same reason—those know-it-alls who have opinion on everything and know it better before even learning about it. What’s-best-for-you-is-not-best-for-me kind of people. Neither of approaches is actually, well, best.

For a best practice to be the best for you, you need to understand it, and if you find any pitfalls, improve it.

In two days I’m delivering the NAV Development Best Practices training for a service provider in Norway. They approached me two two months ago and asked if could do something like that. This brought to memory some good posts I made years ago, and here I bring the links. If you want me to share my best practices, this would be my starting point:

  • Code of Coding: emphasizes the need for understanding the effects of a change in code, and making others understand your intention
  • Code of coding 2: Documenting changes: about how to document different kind of changes in code, and also about the level of effect a specific type of change has in the long run
  • Code of coding 3: Die, hard(coding)!: about avoiding embedding output text into code
  • Code of coding 4: Die, hard(coding) 2: about avoiding embedding settings into code, with detailed explanation what exactly is wrong with it, and some good guidelines on how to detect less obvious cases of settings hardcoding
  • NeverENDing story: about a very bad example I once encountered, and how to avoid situations such as that
  • Featuritis Cure: now this one is definitely not a “best practice”, it’s about a situation when a developer pulled a prank on a customer so subtly that I just had to share it with the world. A far better cure for Featuritis (a dangerous and ugly disease indeed) is given by Mark Brummel, in his fantastic post Tip #20 – Save Report Usage. If you aren’t yet following Mark’s blog, now would be a good time to start.

If you are interested in development best practices, check these posts, and if you find them useful, then I’m happy. If you don’t, share your thoughts. Best practices develop over time, improving slowly, and gradually until one day they just become the norm.

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NeverENDing story

  • Reading time:6 mins read

Hint: this is a post for developers, and mostly junior developers, those who are still learning how to code properly. I know, I promised not to blog about stuff like this, but I simply couldn’t help this time.

A friend of mine has asked me for help.

“There is this C/AL function I had to rewrite, now I end up with 106 BEGINs, and only 105 ENDs. Do you have any idea how to find where this missing END belongs?”

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WinDays 2008: Aftermath

  • Reading time:3 mins read

WinDays 2008 are over. Somehow, this conference has become a milestone, in Croatian ICT community, in Microsoft community, even in my life. I met a friend there, one of those I only meet there, and realized just how quickly the year turned. Obviously, I contemplated too much, and partied too little, something to really get worried about.

Anyway, the presentations I delivered made me think about the future of this blog. It started pretty randomly, as a place where I simply dumped anything that crossed my mind, so you had all sorts of content, from programming, to development, to functionality, to theory. When I look at my blog to-do list, there is even more chaos to it, with topics ranging from SQL optimization all the way to business process reengineering. I realized I need more focus.

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Code of coding 4: Die, hard(coding) 2

  • Reading time:6 mins read

In Croatia, most of roads resemble battlefields. They are so full of holes and patches from all kinds of repairs over time, that they have to re-pave them every five years or so. It is an awful waste of taxpayer’s money, and makes you wish for the world of Jennifer Government to come be. Anyway, as soon as they re-pave the roads, not a week usually passes before they come again, with jackhammers and heavy machinery of all sorts, and start drilling away, blocking the road in process and causing mass-frustration, just because some wacko has suddenly remembered that it would be nice idea to pass the optic cable underneath, or some valve started leaking.

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Code of coding 3: Die, hard(coding)!

  • Reading time:4 mins read

Development is an important phase of implementation of a highly-customizable ERP system, such as Microsoft Dynamics NAV, and that’s why I put a lot of emphasis on development, specifically on coding part of it. I’ve tried to cover a few do’s and don’ts of coding, but so far I’ve left one of my favorite clay pigeons out: hardcoding.

If you want me to define hardcoding, I’d probably put it something like this: hardcoding is the ugliest possible form of laziness, incompetence, ignorance, indifference, carelessness, or any combination of the five, which in short-term makes my toenails curl up, and long-term leads to poor and unmaintainable systems and unhappy customers.

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Code of coding 2: Documenting changes

  • Reading time:9 mins read

Few days ago, when I wrote about coding, I didn’t have a slightest idea that at the same time, at the completely opposite part of the globe, Dave was blogging almost about the same thing. It is interesting to know that I am not the only one out there actually worying about code, and how it looks like.

The most common thing I used to hear when I asked bad coders about their code was: “It works, why shoud I care.”

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Code of coding

  • Reading time:5 mins read

Code is boring. It is geeky. And it’s ugly, too. In C/AL it is especially ugly. While contemporary development tools come with all sort of gizmos which make coding easier, such as color-coding, auto-completion, refactoring, etc., C/AL editor seems like having awaken from a thousand-year sleep. Take a look at the color coding: there is none. Or there is, but palette is limited to that of Charlie Chaplin’s. There is some functionality which looks like auto-completion but it is not, and the text editing capabilities make you dream about Notepad at night. But you can look at it from a different angle. C/AL editor is the way it is for a reason: to keep programmers away. It’s the defence mechanism developed over twenty or so years of evolution of the system, to protect the system from rookie knowitall programmers ripping away that stupid Gen. Jnl.-Post Line codeunit and rewrite it the way it should be. With this, we come to Rule No. 1: Know what you are doing.

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