Collection Operations on Lazy Sequences in TypeScript with itiriri
I’m currently working in TypeScript after spending a lot of time in F#, and I’ve been experimenting with adapting my favored functional approaches to the former.
Web Apps
Generating Excel Files using Node.js and ExcelJS
Recently, I was tasked with writing some code to generate Excel workbooks containing sales data. I implemented the code using a Node module called ExcelJS. I found that this module provides a simple interface to generating documents, and it also supports more advanced functions such as text formatting, borders, formulae, and more.
Using Angular Content Projection to Draw Smiley Faces
When working in Angular, it’s pretty straightforward to create components and nest those components inside of other components. However, it is a bit more complicated to design customizable components that will display content based on the components passed to them (content projection).
Getting Started with AWS Lambda in F#
I recently set out to create my first AWS Lambda function. Of the supported languages, I chose my favorite: F#. In this post, I’ll walk through the process of building a Lambda function in F# and deploying it to AWS. AWS Alphabet Soup Many of Amazon’s web services have famously inscrutable names. After fumbling my […]
Getting Started with WebSockets
WebSockets are a useful tool that allow for two-way communication between a web server and a browser. In this post, I am going to introduce the basics of WebSockets by making a (very) simple chat application using Express, HTML, and vanilla JavaScript.
Getting, Setting, and Understanding Web Cookies using Express and WebdriverIO
Cookies, both the tasty kind and the web browsing kind, aren’t new to me. I’ve clicked my fair share of “this site uses cookies” pop-ups, but until recently, I hadn’t encountered cookies in my work as a programmer. Being newly tasked with the configuration and testing of cookies, I realized that, although cookies are ubiquitous […]
Reactive Programming: A Timed Popup Component with RxJS
Reactive programming is all about streams. It involves combining streams, filtering streams, and transforming streams. In reactive programming, the application does not need to pull for data, but it is notified whenever a new event occurs. A few months ago, I wrote a post on reactive programming in WPF using ReactiveUI. Recently, we’ve been working on […]
Four Hurdles when Prototyping with Material-UI for React
Google created the Material Design design language to be used across devices. If you’re using Material Design with React, I’d recommend Material-UI for React to get the ball rolling. It’s a library of components or pre-styled elements (similar to the Bootstrap framework) that are easy to add to a page, and the components look and […]
Managing Data Loaders in Node.js with Shared State
When developing software, it’s always tough to work with caching. While my team appreciates the efficiencies that Data Loader can provide for applications, we still struggle with the same problems that always come up when caching queries, mainly invalidating caches when a data set has changed.
Understanding the Apollo Default Resolver
According to documentation for Apollo’s GraphQL-tools: You don’t need to specify resolvers for every type in your schema. If you don’t specify a resolver, GraphQL.js falls back to a default one… The documentation goes on to state that the default resolver will look for a property on the parent object with the field name that’s […]