From prototype to production, make sure nothing breaks… You’ve created a fantastic mockup and your client is delighted. You’re ready to move to production with your application. But one question haunts you: how can you ensure that your application will remain stable and functional through modifications and evolutions? The answer comes down to one word: testing. Three weeks ago, part ...

Deploying a Shiny application to different servers or sharing it with others can be challenging due to differences in R package versions and system requirements. Containerization offers a solution: by packaging your Shiny app and its environment into a Docker container, you ensure it runs consistently anywhere Docker is available. However, not every Shiny developer is familiar with writing Dockerfiles ...

Buckle up, we’re talking about security… While developing the Signature.py application, ThinkR recently faced a security issue – in Python – that deserves our full attention. Versioned on Github, the Signature.py code is analyzed by Dependabot. This is a robot that automatically scans projects for obsolete or vulnerable dependencies and can potentially suggest corrective measures. Dependabot alerted us to a ...

Unit testing in R. You know, those small functions that ensure your code works flawlessly—even when you’re on vacation or writing new modules at 2 a.m. But let’s be honest: when it comes to testing user interactions or external resources, things can quickly turn into a headache. What do you do when your code requires a file selection dialog or ...

Ah, pkgdown… That fantastic tool that turns your R package documentation into a website. But sometimes, it lacks a bit of personality. No worries, pkgdown.yml is here to add customization and make your site shine like never before. In this article, we will explore some secrets of the pkgdown.yml file that will help you personalize your documentation. Ready for the ...

Header image via ChatGPT We recently released something unprecedented: an app that brings R to mobile. Yes, you read that right — R, the statistical programming language, is now in the palm of your hand. Whether you’re an environmental researcher, a student, or a logistics professional, R on mobile is here to revolutionize how you work with data on the ...

Context Recently, we worked on testing a {shiny} app that relies on values stored within the session$request object. This object is an environment that captures the details of the HTTP exchange between R and the browser. Without diving too deeply into the technicalities (as much as I’d love to 😅), it’s important to understand that session$request contains information provided by ...

TL;DR Rlinguo is a groundbreaking mobile application that uses R in the backend to handle its business logic. Available for download now: iOs on the AppStore Android on the Google Play Store Yes, you read that right: the future is now, and we can run R on your mobile phone. Once upon a time… I’ve been building web apps with ...

Illustration via ChatGPT. There are three hard things in computer science. One is making ChatGPT write “Invalidation” correctly on an image. ​ There’s a saying that goes: “There are only two hard things in computer science: cache invalidation and naming things.” Well, I’d argue there are actually three: 2. Cache Invalidation 1. Naming things 3. Asynchronous Computing   Yes, that’s ...

🏆 We are excited to announce that {signature.py} is the grand winner of the 2024 Shiny Contest in the category ‘Best Shiny Application with Python’! This year, Posit relaunched the Shiny Contest, a competition dedicated to the development of Shiny applications. Participants are asked to create a personal or professional application that addresses a specific problem. The applications are then ...

webR, and the next generation of app with R For the past couple of months, I’ve been sharing how webR will transform the way we build apps with R inside. If you’re unfamiliar, webR is a WebAssembly compilation of R. In simpler terms, it enables R to run within JavaScript environments. If you are familiar, you know it’s a bit ...

As package developers, we often focus on custom functions, their documentation, and unit testing. To provide a more complete user experience, it can be helpful to include data within the package. Here’s everything you need to know! If you’re not familiar with unit testing, we recommend reading our article on the subject: : https://rtask.thinkr.fr/expectations-verified-dive-into-the-world-of-unit-tests-with-expect_/ Short on time? Here’s the gist ...

Unit tests are essential in the development of an R package. They ensure that your functions work as expected while protecting you from regressions when you improve or modify your code. Thanks to the {testthat} package, writing and automating tests in R becomes simple and intuitive. At the core of this approach are the expect_*() functions, which play a central ...

Let’s continue our exploration of integrating JavaScript code into a {shiny} application! We will show how to move beyond the classic graphs produced in base R or with {ggplot2} to explore the interactive dataviz production libraries of JavaScript, particularly the Chart.js library. If you missed our first article on integrating JavaScript libraries into a {shiny} application I invite you to ...

Header image generated by ChatGPT We are thrilled to announce the release of {golem} version 0.5.0! This update comes packed with new features, enhancements, and bug fixes that will streamline your Shiny app development process. You can download the latest version from your favorite CRAN repository, or by running the following command in R: pak::pak( “thinkr-open/golem@v0.5.0” ) What’s New in This Version? ...

A lot of cleanups, new features, and bug fixes for this new version of ‘gitlabr’. You will find brand-new CI/CD templates and functions to manage GitLab groups from R. Brand new gitlab-ci with ‘pak’, ready to use The template for checking R packages uses {pak} for dependency management. You will no longer have issues with missing system dependencies. You should ...