Best of 2019

The blog posts Hacker News loved most in 2019. 1,357 posts.

Software Engineering
157

.NET Core 3.0

Announcing .NET Core 3.0 We’re excited to announce the release of .NET Core 3.0. It includes many improvements, including adding Windows Forms and WPF, adding new JSON APIs, support for ARM64 and improving performance across the board. C# 8 is also part of this release, which includes nullable, async streams, and more…

160

Why Don't People Use Formal Methods?

I saw this question on the Software Engineering Stack Exchange: What are the barriers that prevent widespread adoption of formal methods? The question was closed as opinion-based, and most of the answers were things like “its too expensive!!!” or “website isn’t airplane!!!” These are sorta kinda true but don’t explain…

165

Real-world dynamic programming: seam carving

Dynamic programming has a reputation as a technique you learn in school, then only use to pass interviews at software companies. Indeed, most developers do not regularly work on problems where dynamic programming is needed. Ultimately, dynamic programming is a technique for efficiently solving problems that can be…

179

Performance Matters

Last year I got certified as an EMT. As part of the training I shadowed an ambulance for a day and assisted with each run. For each patient we treated, we had to fill out a patient care report. A patient care report. (source) EMTs are just one part in a long chain. If they transport a patient to a hospital, the…

180

Write your own Excel in F# (2018)

Use Fable, Elmish architecture, parser combinators and the magic of functional-first programming with F# to build a simple browser-based spreadsheet application! I have been teaching F# for 7 years now and while the libraries and examples change, the core ideas remain the same. In this blog post, I'll cover my latest…