https://fsharpforfunandprofit.com/categories/interfaces/ Recent content in Interfaces on F# for Fun and Profit Hugo -- gohugo.io en-us Tue, 17 Jul 2012 00:00:00 +0000 https://fsharpforfunandprofit.com/posts/object-expressions/ Tue, 17 Jul 2012 00:00:00 +0000 https://fsharpforfunandprofit.com/posts/object-expressions/ So as we saw in the previous post, implementing interfaces in F# is a bit more awkward than in C#. But F# has a trick up its sleeve, called “object expressions”. With object expressions, you can implement an interface on-the-fly, without having to create a class. Implementing interfaces with object expressions Object expressions are most commonly used to implement interfaces. To do this, you use the syntax new MyInterface with . https://fsharpforfunandprofit.com/posts/interfaces/ Mon, 16 Jul 2012 00:00:00 +0000 https://fsharpforfunandprofit.com/posts/interfaces/ Interfaces are available and fully supported in F#, but there are number of important ways in which their usage differs from what you might be used to in C#. Defining interfaces Defining an interface is similar to defining an abstract class. So similar, in fact, that you might easily get them confused. Here’s an interface definition: type MyInterface = // abstract method abstract member Add: int -> int -> int // abstract immutable property abstract member Pi : float // abstract read/write property abstract member Area : float with get,set And here’s the definition for the equivalent abstract base class: