Previously I wrote about several “gotchas” in the new JSON serializer that is built in to .NET Core 3.0. Another one has cropped up, but it is different enough that I thought it warranted its own post. Type Promiscuity via GIPHY Back in 2010 or something like that, Ted Neward gave a talk about JavaScript … [Read more…]
One of the benefits of JavaScript (and therefore TypeScript) is being able to do whatever you want with objects. This can be dangerous, of course, because of type promiscuity – which is one thing that TypeScript addresses. via GIPHY Object.keys Sometimes it is still useful to just loop through each property on an object in … [Read more…]
DatePickers are pretty much a dime a dozen these days, but if you are already using a framework that already has a DatePicker, it makes sense to use that. via GIPHY ng-bootstrap ng-bootstrap is a package of Angular components that are built using Bootstrap 4. So, if you’re already using Bootstrap and Angular, it could … [Read more…]
So there I was, minding my own business, again writing JavaScript tests… when suddenly I wanted to write a test to see what happens if NaN was supplied as a parameter. via GIPHY NaN Stands for “Not A Number”. You can get a NaN in a few different ways: But when checking for NaN, there’s … [Read more…]
So there I am, happily writing unit tests, and suddenly this appears I keep seeing this error while trying to write Angular tests. I… *think* this happens when something goes wrong during the constructor of a component. I’ve written before about how it could be due to an @Input property not being initialized properly. But, … [Read more…]
You’ve used it, you know it. Given a series of numbers, it returns you the biggest one. Simple. Easy. Definitely not blog post worthy. Syntax Math.max([value1[, value2[, …]]]) Usage Thank You That’s it for this week’s blog post, have a good day everyone…! via GIPHY Spooky Stuff Oh… You’re still here? Huh? What happens if … [Read more…]
For some reason I’ve procrastinated looking in to transition animations in Angular. via GIPHY Transitions are visually pleasing, and it can give your application a nice feel that makes your users think “Wow, this is a nice site.” Subtle animations are the best – the ones you don’t really notice unless you’re looking for them. … [Read more…]
Recently I had created a couple of components to make filtering and sorting a list of objects easier. Essentially I wanted a table where the headers are clickable for sorting and also have a textbox below them for filtering. Now, this isn’t super great, because I’m downloading all of the data to the client side … [Read more…]
Sometimes when you’re writing Javascript unit tests you have to give Javascript a chance to catch up before checking your assertions. Javascript uses a single event loop, so it isn’t multi-threaded in the same way as other languages. You can still get a “multi-threaded feel” by using callbacks (promises, observables, etc), but at the end … [Read more…]
There’s some debate as to whether or not you should test private members in a class. Generally, I fall in to the “if it makes sense to test it, test it” camp. If there’s a private method that is only accessible by a hard-to-mock series of callbacks or events, I would much rather write a … [Read more…]