I had been working on a client project where I built the GraphQL backend for a new social network using primarily AppSync, Lambda and DynamoDB. One of the features of the app was to support private messaging between two users. To allow either user to fetc[...]

Welcome to F# Weekly, A roundup of F# content from this past week: News Announcing .NET 5.0 Preview 3 New Saturn Landing page Videos and Slides Phillip Carter- You got FP in my Enterprise!- λC 2019 F# and Functional Programming! – The Dev Talk Show Deploy[...]

Hi, welcome to another weekly update. Production-Ready Serverless workshop goes virtual! Starting from May 4th, I will be running a 4-week instructor-led workshop that teaches you everything you need to know to build a production-ready serverless applicat[...]

Most real-world programming languages are too complex to be studied using formal methods. For this reason, academics often work with simple theoretical languages instead. The λ-calculus is a simple formal language that is often used for talking about func[...]

Welcome to F# Weekly, A roundup of F# content from this past week: News SAFE v2 – Roadmap and request for feedback Using .NET Core to provide Power Query for Excel on Mac Work flow of diagnosing memory performance issues – Part 1 See What’s New in Visual [...]

TL;DR To make an AppSync DynamoDB resolver throw exceptions on conditional check errors, we need to check $context.error in the response mapping template ourselves. Like this: #if ( $ctx.error ) #if ( $ctx.error.type.equals("DynamoDB:ConditionalCheckFaile[...]

Have you been wondering about serverless but just don’t know how and where to start? Maybe you’re already building stuff with serverless, but don’t know if you’re doing it right? Are you unsure about the best practices for testing, monitoring and how to c[...]

Welcome to F# Weekly, A roundup of F# content from this past week: News Meet Visual Studio for Mac’s New Integrated Terminal! Mobius – .NET runtime running on .NET Core A comparison between Fable.React and Feliz Work flow of diagnosing memory performance [...]

So you have built a serverless application, that, amongst other things, lets you upload images and files to S3. The set-up is very simple: API Gateway, Lambda and S3. It took you no time to implement and it works like a dream. You pat yourself on the back[...]

Despite having the term science in its name, it is not always clear what kind of discipline computer science actually is. Research on programming is sometimes like science, sometimes like mathematics, sometimes like engineering, sometimes like design and [...]