Microsoft has a version of Visual Studio Code which will run on the Raspberry Pi OS — formerly known as Raspbian. You can even download it from the APT (Advanced Packaging Tool). And it’s simply 2 lines of code to install:
sudo apt update
sudo apt install code
Afterward, you can launch it from the Programming menu in the GUI or by typing code in the terminal.
And the really nice thing about VS Code being in the APT is that you can update it like any other package on your Pi:
Let’s say you have an array of numbers (but it could be an array of anything really):
const myNumbers = [1,2,3,4,5]
You want the last number in the array but don’t care how many elements are in the array. The simplest way to get the last number in the array is to get the element who’s position is the same as the length of the array minus 1. The minus 1 is because arrays are zero based, so the first element is accessed like so:
const selectedNumber = myNumbers
Therefore, the easiest way to get the last element from an array without knowing how many elements are in the array is like this:
Had a not so obvious issue pop up recently in a Vue.JS app I’ve been working on for a while now. I have a table of members and if you click the member name, you get redirected to their profile page. There is a click event on the name link so it will store the profile id then use the router to push the new route. The issue is that when you click the link, you get the following error:
BUT if you click the link a second time you get redirected to the profile page as expected. This error is basically saying you can’t navigate to the same page you are on. Which is not what I was trying to do. So I was confused.
Turns out everything was working properly in my code I just didn’t account for it all. Here is my original link:
The trouble is the href=”#” is firing before my @click event fires. So, Vue’s router thinks I’m trying to go to the same page. To make the behavior what I wanted, I had to prevent that from firing and just fire my @click event.
Thankfully, Vue makes it pretty easy. Just add .prevent to your @click event. My new link looks like this:
Sometimes, when you have a long file, it’s convenient to fold/collapse all the code regions so you can get a big picture of your file. In Visual Studio (the full blown IDE from Microsoft), it’s a simple keyboard shortcut combination
Thankfully, Visual Studio Code has something similar. To fold ALL regions use
Then just use the following to unfold the code file
The nice thing about this is that all the sub regions are folded as well. So you can simply open one region and all the items inside are still folded.
As a developer, I have to copy and paste. A lot! Sometimes I need to copy several items from different locations and then paste them into the same file. This can be very tedious with the traditional Ctrl+C then Ctrl+V process. To help remedy this, I use Comfort Clipboard Pro, a very powerful clipboard manager. I realize for some this may be a bit of overkill or they don’t wish to spend the money on a solution.
Thankfully, Visual Studio 2019 has a feature which can help. Simply copy several items in a row using your preferred method — from the file menu or with a key command. Then place your cursor where you wish for the copied items to be pasted. Next, go to Edit in the file menu and select the Show Clipboard History option (alternately you can press Ctrl+Shift+Insert).
This will display a popup list of the things you’ve just copied. Click one of the items in the list.
The item you selected will be pasted into your file where your cursor currently sits.
That’s it! Quick. Simple. It didn’t require any additional software. And it didn’t cost you anything. Hope that helps!
Visual Studio 2019 shipped on April 1st. And one of the nice things about it is you can have it installed side-by-side with other version — like Visual Studio 2017. Most developers have spent some time selecting which features of Visual Studio they need installed. A nice addition to the new Visual Studio Installer is you can export your configurations from one version and import into another. So, if you’ve just installed 2019 and wish for it to be configured like your 2017 version, now you can! And it’s pretty straight forward.
Launch the Visual Studio Installer.
And that’s it! The installer will download and install any needed components based on your older configuration file.
To be helpful, browsers will cache information you enter in a form field. Then when you comeback and start typing, the same information will pop up near the field so you can click it to have it auto-entered for you. While this is useful, there are times you don’t want this behavior — like a one-time PIN number or CVC code for credit card payment.
Thankfully, there is an easy fix. On either the form itself or the specific fields you wish to stop this behavior, you can add the autocomplete property and set the value to “off“.
This accomplishes 2 things. It tells the browser not to save the data for use later. And it stops the browser from caching the data in session history.
This will work with most modern browsers….with one exception. Most modern browsers will not comply with the autocomplete=”off” for login fields; whether on the form or a field itself. It has to do with the way browsers handle password saving/creating internally. So just keep that in mind.
You can get the currently focused element with a simple reference on the Dom:
var currentElement = document.activeElement
This will return the element which has focus, or null if there is no focused element. It will let you have access to the whole element. You can get to any properties on that element like the Id or Name. The CodePen below is a simple example of using the document.activeElement