The Tidyverse is a collection of related R packages, many of which I use on Open-Meta. I recently added the entire Tidyverse to my Windows-based development system, which meant I had to do the same to move that code to my Amazon Lightsail instance, which I did yesterday.
invalidateLater() function, if you know about it at all, probably doesn’t work the way you think it does. Moreover, the way it actually does work, it turns out, is way cooler than the way it appears to work!
She comes in a lot of different looks and many of the emoji sets have her in several different skin colors. I’m a real Luddite when it comes to emojis in my personal communications, but I liked the idea of using the Android 7.1 female sleuth as the Open-Meta.org icon.
<a id="xxx">). Anchor tags are typically used to create links and include an href attribute that holds the URL of the linked document.
One of the profound limitations of Shiny is the way it supports buttons. Buttons are based on a function called actionButton(). When a button is clicked, Shiny reports the click on input$button_id. Every button has to have a unique id, which means that each button also has to have its own observer to watch for a click. But what if you want to do something like this:
Today I decided to try adding the RStudio Server to my Amazon Lightsail instance. There are three steps to this – downloading and installing the software, opening up port 8787, and adding a user with a password who can log in to the server.
This week my fellow doctoral students see the first live demonstration (and alpha-test) of the Open-Meta app. Before loading the code onto AWS, I decided to start a new instance and update the installation scripts.
Recording what date and time something happened and reporting it back to users is complicated in multi-user web applications.
So many choices! In previous blogs I’ve talked about the traditional LAMP stack, in which the “M” stands for the open-source MySQL database engine. I barely understand the details, but somehow Oracle now owns MySQL. There’s still a free open-source version, often referred to as the community edition. Some open-source developers weren’t happy about the Oracle switch, however, and “forked” the MySQL code into a new project called MariaDB.