Does F# have equivalent syntax to C#'s "unsafe" block

Question

A lot of array boundary checking slows down the speed, this is especially true to 2D arrays. Is there a way to write unsafe code blocks in F#?

Answer 1

I'm not a F# programmer but as far as I can see it doesn't seem to have the unsafe keyword.

You could possibly get a performance boost by transforming the 2D array to an one-dimensional array.

Advice 5: Until we get this right, I would suggest that .NET users do what many C++ numerical programmers do: write a class to implement your n-dimensional array. This would be represented as a 1-dimensional array, and the relevant accessors would convert n indices into 1 via appropriate multiplications. We almost certainly wouldn’t eliminate the bounds check into the 1-d array, but at least we’d only do one check!

Array Bounds Check Elimination in the CLR

Answer 2

Not in this version and I doubt they'll ever add it.

Answer 3

I have not used it to know if/how it applies, but do check out the NativePtr module.