I’ve been playing with Iteratees lately in my work with Dave on fracture-io. The Iteratee module used in this post is part of the FSharpx library and provides a set of types and functions for building compositional, input processing components. A fold, by any other name A common scenario for I/O processing is parsing an [...]

In F#, you have the choice of using a struct or a record as a lightweight container for data. The similarities between the two are striking – both are immutable by default, neither can be inherited, and they both offer structural equality semantics by default too! However, there’s a key difference between them, their performance [...]

In my previous post on discriminated unions, I presented discriminated unions as an alternative to standard .Net classes to represent hierarchical data structures. However, in terms of data structure, discriminated unions share much more similarities with enums than they do classes – both allow you to define a set of named constants and associate some [...]