Delving into Reactive Values

In a previous posts we examined the current state of GUI programming in Haskell, how imperative libraries get in the way of functional beauty, and how (non-FRP) reactive programming enables short, declarative code and facilitates code reuse. But without the low-level details, without more information on how this framework is structured, all we have is an idea, a draft on a piece of paper. It’s impossible to know how much effort it will require, or how much it will affect our code. ...

GUI programming in Haskell "the old way"

As discussed in a previous post, purely functional GUI frameworks may fail to deliver in terms of feature coverage, look-and-feel and codebase scalability. As a result, many programmers turn back to good-old Gtk+ for their user interfaces (see, for instance, Ian-Woo Kim’s hoodle). ...

Keera Hails: functional event-driven programming of desktop applications in Haskell

Some time ago I tried to create big programs with user interfaces in Haskell and found that none of the FRP frameworks worked as expected. Some were incomplete, others didn’t compile, and efficiency was an issue in those that did work. ...

Keera Posture: when Haskell, OpenCV & Simplicity unite

Can we show how powerful Haskell is with an application that is very useful and, at the same time, surprisingly simple? I present Keera Posture: a program that will warn you when you sit or stand in a straining position. All you need is a webcam and a PC. ...