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The Daily WTF | Curious Perversions in Information Technology - Cheezy
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Que Sera, Sera - The Daily WTF
It's just the same refrain, over and over. "Time Travel! Again?" exclaimed David B. "I knew that Alaska is a good airline. Now I get to return at the start of a century. And not this century. The one before air flight began." To be fair, David, there never is just one first time for time travel. It's always again, isn't it?
Dating in Another Language - The Daily WTF
It takes a lot of time and effort to build a code base that exceeds 100kloc. Rome wasn't built in a day; it just burned down in one. Liza was working in a Python shop. They had a mildly successful product that ran on Linux. The sales team wanted better sales software to help them out, and instead of buying something off the shelf, they hired a C# developer to make something entirely custom.
XJSOML - The Daily WTF
When Steve's employer went hunting for a new customer relationship management system (CRM), they had some requirements. A lot of them were around the kind of vendor support they'd get. Their sales team weren't the most technical people, and the company wanted to push as much routine support off to the vendor as possible. But they also needed a system that was extensible. Steve's company had many custom workflows they wanted to be able to execute, and automated marketing messages they wanted to construct, and so wanted a CRM that had an easy to use API.
Hot Dog - The Daily WTF
Faithful Peter G. took a trip. "So I wanted to top up my bus ticket online. After asking for credit card details, PINs, passwords, a blood sample, and the airspeed velocity of an unladen European swallow, they also sent a notification to my phone which I had to authorise with a fingerprint, and then verify that all the details were correct (because you can never be too careful when paying for a bus ticket). So yes, it's me, but the details definitely are not correct." Which part is wrong, the currency? Any idea what the exchange rate is between NZD and the euro right now?
Conventional Events - The Daily WTF
Now, I would argue that the event-driven lifecycle of ASP .Net WebForms is a bad way to design web applications. And it's telling that the model is basically dead; it seems my take is at best lukewarm, if not downright cold. Pete inherited code from Bob, and Bob wrote an ASP .Net WebForm many many ages ago, and it's still the company's main application. Bob may not be with the company, but his presence lingers, both in the code he wrote and the fact that he commented frequently with // bob was here
Message Oriented Database - The Daily WTF
Mark was debugging some database querying code, and got a bit confused about what it was actually doing. Specifically, it generated a query block like this: $statement="declare @status int declare @msg varchar(30) exec @status=sp_doSomething 'arg1', ... select @msg=convert(varchar(10),@status) print @msg "; $result = sybase_query ($statement, $this->connection);
A Single Mortgage - The Daily WTF
We talked about singletons a bit last week. That reminded John of a story from the long ago dark ages where we didn't have always accessible mobile Internet access. At the time, John worked for a bank. The bank, as all banks do, wanted to sell mortgages. This often meant sending an agent out to meet with customers face to face, and those agents needed to show the customer what their future would look like with that mortgage- payment calculations, and pretty little graphs about equity and interest.
Sentinel Headline - The Daily WTF
When faced with an information system lacking sufficient richness to permit its users to express all of the necessary data states, human beings will innovate. In other words, they will find creative ways to bend the system to their will, usually (but not always) inconsequentially. In the early days of information systems, even before electronic computers, we found users choosing to insert various out-of-bounds values into data fields to represent states such as "I don't know the true value for this item" or "It is impossible accurately state the true value of this item because of faulty constraint being applied to the input mechanism" or other such notions.
A Steady Ship - The Daily WTF
You know what definitely never changes? Shipping prices. Famously static, despite all economic conditions and the same across all shipping providers. It doesn't matter where you're shipping from, or to, you know exactly what the price will be to ship that package at all times. Wait, what? You don't think that's true? It must be true, because Chris sent us this function, which calculates shipping prices, and it couldn't be wrong, could it?
Single or Mingle - The Daily WTF
Singletons is arguably the easiest to understand design pattern, and thus, one of the most frequently implemented design patterns, even- especially- when it isn't necessary. Its simplicity is its weakness. Bartłomiej inherited some code which implemented this pattern many, many times. None of them worked quite correctly, and all of them tried to create a singleton a different way.
Unnavigable - The Daily WTF
Do you know what I had forgotten until this morning? That VBScript (and thus, older versions of Visual Basic) don't require you to use parentheses when calling a function. Foo 5 and Foo(5) are the same thing. Of course, why would I remember that? I thankfully haven't touched any of those languages since about… 2012. Which is actually a horrifyingly short time ago, back when I supported classic ASP web apps. Even when I did, I always used parentheses because I wanted my code to be something close to readable.
Mais Que Nada - The Daily WTF
I never did explain the elusive off-by-one I hinted at, did I? A little meta, perhaps. It is our practice at Error'd to supply five nuggets of joy each week. But in episode previous-plus-one, you actually got six! (Or maybe, depending on how you count them, that's yet another off-by-one. I slay me.) If that doesn't tickle you enough, just wait until you hear what Dave L. brought us. Meanwhile... "YATZP" scoffed self-styled Foo AKA F. Yet Another Time Zone P*, I guess. Not wrong. According to Herr Aka F., "German TV teletext (yes, we still have it!) botched the DST start (upper right corner). The editors realized it and posted a message stating as much, sent from the 'future' (i.e. correct) time zone."
Join Us in this Query - The Daily WTF
Today's anonymous submitter worked for a "large, US-based, e-commerce company." This particular company was, some time back, looking to save money, and like so many companies do, that meant hiring offshore contractors. Now, I want to stress, there's certainly nothing magical about national borders which turns software engineers into incompetents. The reality is simply that contractors never have their client's best interests at heart; they only want to be good enough to complete their contract. This gets multiplied by the contracting firm's desire to maximize their profits by keeping their contractors as booked as possible. And it gets further multiplied by the remoteness and siloing of the interaction, especially across timezones. Often, the customer sends out requirements, and three months later gets a finished feature, with no more contact than that- and it never goes well.
A Ruby Encrusted Footgun - The Daily WTF
Many years ago, JP joined a Ruby project. This was in the heyday of Ruby, when every startup on Earth was using it, and if you weren't building your app on Rails, were you even building an app? Now, Ruby offers a lot of flexibility. One might argue that it offers too much flexibility, especially insofar as it permits "monkey patching": you can always add new methods to an existing class, if you want. Regardless of the technical details, JP and the team saw that massive flexibility and said, "Yes, we should use that. All of it!"
Nobody's BFF - The Daily WTF
Legacy systems are hard to change, and even harder to eliminate. You can't simply do nothing though; as technology and user expectations change, you need to find ways to modernize and adapt the legacy system. That's what happened to Alicia's team. They had a gigantic, spaghetti-coded, monolithic application that was well past drinking age and had a front-end to match. Someone decided that they couldn't touch the complex business logic, but what they could do was replace the frontend code by creating an adapter service; the front end would call into this adapter, and the adapter would execute the appropriate methods in the backend.
Here Comes the Sun - The Daily WTF
We got an unusual rash of submissions at Error'd this week. Here are five reasonably good ones chosen not exactly at random. For those few (everyone) who didn't catch the off-by-one from last week's batch, there's the clue. "Gotta CAPTCHA 'Em All," puns Alex G. "So do I select them all?" he wondered. I think the correct answer is null.
A Bracing Way to Start the Day - The Daily WTF
Barry rolled into work at 8:30AM to see the project manager waiting at the door, wringing her hands and sweating. She paced a bit while Barry badged in, and then immediately explained the issue: Today was a major release of their new features. This wasn't just a mere software change; the new release was tied to major changes to a new product line- actual widgets rolling off an assembly line right now. And those changes didn't work.
Time for Identification - The Daily WTF
If you need a unique ID, UUIDs provide a variety of options. It's worth noting that variants 1, 2, and 7 all incorporate a timestamp into the UUID. In the case of variant 7, this has the benefit of making the UUID sortable, which can be convenient in many cases (v1/v2 incorporate a MAC address which means that they're sortable if generated with the same NIC). I bring this up because Dave inherited some code written by a "guru". Said guru was working before UUIDv7 was a standard, but also didn't have any problems that required sortable UUIDs, and thus had no real reason to use timestamp based UUIDs. They just needed some random identifier and, despite using C#, didn't use the UUID functions built in to the framework. No, they instead did this:
Tern Down a Date - The Daily WTF
Today's anonymous submitter has managed to find a way to do date formatting wrong that I don't think I've seen yet. That's always remarkable. Like most such bad code, it checks string lengths and then adds a leading zero, if needed. It's not surprising, but again, it's all in the details: // convert date string to yyyy/MM/DD return dtmValue.Year + "-" + ((dtmValue.Month.ToString().Length == 1)? ("0" + dtmValue.Month.ToString()): dtmValue.Month.ToString()) + "-" + ((dtmValue.Day.ToString().Length == 1)? ("0" + dtmValue.Day.ToString()): dtmValue.Day.ToString());
The Rounding Error - The Daily WTF
At one point, someone noticed that some financial transactions weren't summing up correctly in the C# application Nancy supported. It didn't require Superman or a Peter Gibbons to figure out why: someone was using floating points for handling dollar amounts. That kicked off a big refactoring project to replace the usage of double types with decimal types. Everything seemed to go well, at least until there was a network hiccup and the application couldn't connect to the database. Let's see if you can figure out what happened:
NaN is the Loneliest Number - The Daily WTF
Today we have a whole batch of category errors, picked out from the rash of submissions and a few that have been festering on the shelf. Just for fun, I threw in an ironic off-by-some meta-error. See if you can spot it. Adam R. "I'm looking for hotel rooms for the 2026 Winter Olympics in Milan-Cortina. Most hotels haven't opened up reservations yet, except for ridiculously overprice hospitality packages. This search query found NaN facilities available, which equates to one very expensive apartment. I guess one is not a number now?"
Reliability Test - The Daily WTF
Once upon a time, Ryan's company didn't use a modern logging framework to alert admins when services failed. No, they used everyone's favorite communications format, circa 2005: email. Can't reach the database? Send an email. Unhandled exception? Send an email. Handled exception? Better send an email, just in case. Sometimes they go to admins, sometimes they just go to an inbox used for logging. Let's look at how that worked.
Too Many Red Flags - The Daily WTF
Fresh out of university, Remco accepted a job that allowed him to relocate to a different country. While entering the workforce for the first time, he was also adjusting to a new home and culture, which is probably why the red flags didn't look quite so red. The trouble had actually begun during his interview. While being questioned about his own abilities, Remco learned about Conglomcorp's healthy financial position, backed by a large list of clients. Everything seemed perfect, but Remco had a bad gut feeling he could neither explain nor shake off. Being young and desperate for a job, he ignored his misgivings and accepted the position. He hadn't yet learned how scarily accurate intuition often proves to be.
No Time Like the Present - The Daily WTF
I'm not entirely sure I understand the first item today, but maybe you can help. I pulled a couple of older items from the backlog to round out this timely theme. Rudi A. reported this Errord, chortling "Time flies when you're having fun, but it goes back when you're walking along the IJ river!" Is the point here that the walking time is quoted as 77 minutes total, but the overall travel time is less than that? I must say I don't recommend swimming the Ij in March, Rudi.
Don't Date Me - The Daily WTF
I remember in some intro-level compsci class learning that credit card numbers were checksummed, and writing basic functions to validate those checksums as an exercize. I was young and was still using my "starter" credit card with a whopping limit of $500, so that was all news to me. Alex's company had a problem processing credit cards: they rejected a lot of credit cards as being invalid. The checksum code seemed to be working fine, so what could the problem be? Well, the problem became more obvious when someone's card worked one day, and stopped working the very next day, and they just so happened to be the first and last day of the month.
Where is the Validation At? - The Daily WTF
As oft stated, the "right" way to validate emails is to do a bare minimum sanity check on format, and then send a verification message to the email address the user supplied; it's the only way to ensure that what they gave you isn't just syntactically valid, but is actually usable. But even that simple approach leaves places to go wrong. Take a look at this code, from Lana.
An Argument With QA - The Daily WTF
Markus does QA, and this means writing automated tests which wrap around the code written by developers. Mostly this is a "black box" situation, where Markus doesn't look at the code, and instead goes by the interface and the requirements. Sometimes, though, he does look at the code, and wishes he hadn't. Today's snippet comes from a program which is meant to generate PDF files and then, optionally, email them. There are a few methods we're going to look at, because they invested a surprising amount of code into doing this the wrong way.
Wrap Up Your Date - The Daily WTF
Today, we look at a simple bit of bad code. The badness is not that they're using Oracle, though that's always bad. But it's how they're writing this PL/SQL stored function: FUNCTION CONVERT_STRING_TO_DATE --Public (p_date_string IN Varchar2, p_date_format IN Varchar2 DEFAULT c_date_format) Return Date AS BEGIN If p_date_string Is Null Then Return Null; Else Return To_Date(p_date_string, p_date_format); End If; END; -- FUNCTION CONVERT_STRING_DATE
The Sales Target - The Daily WTF
The end of the quarter was approaching, and dark clouds were gathering in the C-suite. While they were trying to be tight lipped about it, the scuttlebutt was flowing freely. Initech had missed major sales targets, and not just by a few percentage points, but by an order of magnitude. Heads were going to roll.
An Alerting Validation - The Daily WTF
There are things which are true. Regular expressions frequently perform badly. They're hard to read. Email addresses are not actually regular languages, and thus can't truly be validated (in all their many possible forms) by a pure regex. These are true. It's also true that a simple regex can get you most of the way there.