Suggestion: Add argument anotation

[vincentremond]

I use Rider a lot for F# development and there is a feature that I would love to have: Add type anotation for arguments.

For example, if I have the following function:

module Regex =
    let replace pattern replacement input =
        System.Text.RegularExpressions.Regex.Replace(input, pattern, replacement)

it won't compile because the compiler doesn't know which overload to choose based on the type of the arguments. I have to add the type anotation manually to at least one of the arguments:

module Regex =
    let replace pattern (replacement: string) input =
        System.Text.RegularExpressions.Regex.Replace(input, pattern, replacement)

And I don't necessarily want to add the type anotation for all arguments, just the ones that are missing.

So I would love to have a feature that would allow me to add the type anotation for a single argument, currently we can only add the type anotation for all arguments and to the function return type :

[auduchinok]

@vincentremond Thank you for writing about it! I agree, it would be much better to do have option to annotate things separately. There're some issues that we need to solve to enable it, but once solved, it would be possible and great to have.