F# equivalent of the C# 'object' keyword

Question

I am trying to port an existing c# to f# and would I am getting stuck on porting this c# line: ``` public object myInnerOject ```

Accepted Answer

In C# `object` is just a type name referring to `System.Object`. In F#, you can either use this full .NET name or a type alias `obj`.

Now, regarding a field declaration - there are various ways to write that depending on the context. Also, it is a good practice to initialize all fields in F#, so it would be useful to see larger context of your code.

However, you may write this:

```
type A() = 
  let mutable (myInnerObj:obj) = null
```

This creates a private field `myInnerObj` of type `System.Object` initialized to `null`, which is mutable can can be assigned later (`myInnerObj <- new Random()`, for example). I used example with private field, because public fields are generally discouraged in .NET.

F# equivalent of the C# 'object' keyword

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