As Howard Mansell already announced on the BlueMountain Tech blog, we have officially released the "1.0" version of Deedle. In case you have not heard of Deedle yet, it is a .NET library for interactive data analysis and exploration. Deedle works great with both C# and F#. It provides two main data structures: series for working with data and time series and frame for working with collections of series (think CSV files, data tables etc.) The great thing about Deedle is that it has been becoming a founda[...]

If you are following me or the #fsharp hashtag on Twitter, you might have already come across a link to fsharpWorks or one of the upcoming F# events organized by fsharpWorks. So, what is fsharpWorks and what are we planning for you?

Are you an F# user on Mac OS or Linux, looking for the easiest way to develop multi-project F# solutions with full code assistance and type checking? Would you like to use F# Interactive for developing and testing parts of your web applications interactively? Would you like to benefit from the multitude of web libraries in your development environment? Well, if yes - look no further, CloudSharper, the world's most versatile online IDE has arrived to Mac and Linux!

If you’ve ever tried to create an HttpMessageHandler in F#, you’ll have been bitten by the problem of not being able to call base.SendAsync from a callback. The solution is actually quite simple. Just wrap the HttpMessageHandler and expose the protected SendAsync method as a public or internal member: Now, you can call CallableSendAsync in […]

Most discussions about monads, even in F#, start by looking at the well-known standard monads for handling state from Haskell. The reader monad gives us a way to propagate some read-only state, the writer monad makes it possible to (imperatively) produce values such as logs and the state monad encapsulates state that can be read and changed. These are no doubt useful in Haskell, but I never found them as important for F#. The first reason is that F# supports state and mutation and often it is just ea[...]