An Animated Block

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"There are a few more functions like this in the same file," writes Jenny, about today's submission. This is one which largely does speak for itself.

const gright = () => { setIscountright(isCountright + 1); if(isCountright === 0) { setIsleft(!isLeft); setIsfirstdot(!isFirstdot); setIssecdot(!isSecdot); setInfof('Once activated buttons on the right panel will appear'); setIssquareleft(!isSquareleft); setIsanimBottRightIn(!isAnimBottRightIn); } if(isCountright === 1) { setIssecdot(!isSecdot); setIsthirddot(!isThirdtdot); setInfof('Tap on them to change content of the projection on the wall'); setIselmscale(!isElmscale); setIssquareleft(!isSquareleft); setIsmap(!isMap); setIsmapdot(!isMapdot); setIsborderwhite(!isBorderwhite); } if(isCountright === 2) { setIsright(!isRight); setIsthirddot(!isThirdtdot); setIsfourthdot(!isForthdot); setInfof('Use the menu bar in top left corner to switch between pages'); setIssquareleft(isSquareleft); setIsanimBottRightIn(!isAnimBottRightIn); setIselmscale(!isElmscale); setIsmap(!isMap); setIsmapdot(!isMapdot); setIsborderwhite(!isBorderwhite); setIsindicator(!isIndicator); setTimeout(():void => { setAnimain(false); setMainsec(true); setIsindicator(false); setIsindicator2(true); }, 1000); setTimeout(():void => { setMainsec(false); setMainth(true); setIsindicator2(false); setIsindicator3(true); setShowdone(true); }, 2200); } }


by in Error'd on

This week's edition of Err'd gets off to a flying start with one that came in "over the transom" as t'were. Ordinarily, expired certs are a bit mundane for this column, but in this case, where this foible fetched up is at least worth a chuckle.

Jim M. wrote directly to the editor with this explanation. "If you're looking for compliance reports to prove that your cloud provider has solid security practices, be wary of this WTF with Azure. Quoting the site, SOC 2 Type 2 attestation report addresses the requirements set forth in the Cloud Security Alliance (CSA) Cloud Controls Matrix (CCM), and the Cloud Computing Compliance Criteria Catalogue (C5:2020) created by the German Federal Office for Information Security (BSI). Sounds impressive! The link for Azure DevOps SOC 2 Type 2 attestation report goes to this link,, which shows that the cert for this page has expired. Try it here: "

Nullable Booleans

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Austin's team received a bug report. When their C# application tried to load certain settings, it would crash. Now, since this was a pretty severe issue in their production software, impacting a fair number of customers, everyone on the team dove in.

It didn't take Austin long to spot the underlying problem, which isn't quite the WTF.

Observing the Observer

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In the endless quest to get asynchronous operations right, we're constantly changing approaches. From callbacks, to promises, to awaits, to observables. Observables are pretty straight forward: we observe something, like a socket or a HTTP request, and when something happens, we trigger some callbacks. In a lightly pseudocode version, it might look something like:

requestFactory.postFormRequest(url).subscribe( resp => myResponseHandler(resp), err => myErrorHandler(err), () => myRequestCompleteHandler() )

Counting Answers

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Lacy's co-worker needed to collect groups of strings into "clusters"- literally arrays of arrays of strings. Of great importance was knowing how many groups were in each cluster.

Making this more complicated, there was an array list of clusters. Obviously, there's a code smell just in this data organization- ArrayList<ArrayList<String[]>> is not a healthy sounding type name. There's probably a better way to express that.

Uniquely Unique

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Giles's company has a hard time with doing things in the database.

In today's example, they attempt the very challenging task of generating unique IDs in a SQL Server database. Now, what you're about to see follows the basic pattern of "generate a random number and see if it's already been used", which is a fairly common anti-pattern, but it's managed to do this in some of the worst ways I've ever seen. And it can't even hide behind the defense of being written a long time ago- it's a handful of years old.

He's Got a Ticket to Ride

by in Error'd on

We've had a rash of train troubles lately. If only I had saved them all, we could have enjoyed a first class special edition instead of squeezing them into economy. But here we are. First stop Budapest!

Magyar Máté murmurs from Switzerland "I seem to have a ticket into the void 😱" Make sure you pay for a round trip!

Capital Irregularities

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Carolyn's company has a bunch of stringly-typed enums. That's already a problem, even in Python, but the other problem is that they need to display these in a human readable format. So, "ProductCategory" needs to become "Product Category". Now, it's true that every one of these stringly typed enums follows the PascalCase convention. It's also true that the list of them is constantly growing.

So this is the method someone wrote for formatting: