Invocation of the function let add a b = a + b does not work on debug console

[geraldodev]

VSCode Version: 1.10.2
OS Version: Ubuntu 16.04
Ionide: 2.23.9

Steps to Reproduce:

1.create new F# project
2. On the main file paste
let sub (a, b) = a - b
let add a b =
a + b
3. place a breakpoint debug on the first line of the main and hit start debugging
4. enter (add 2 3) on debug console to be executed on the context which returns
error CS1026: ) expected

Interestingly when the parameter is constrained by a tuple like on sub it works:
sub (3, 2)
1

Also tested the add function on fsharpi from mono and it worked there.

Geraldo Lopes de Souza

[enricosada]

@geraldodev the debugger doesnt support evaluation of f# expressions (ref dotnet/fsharp#2544 for more info).
Atm debugger always try to eval these as c# expressions, that's why sub(3,2) works, is valid c# syntax

@Krzysztof-Cieslak this can be closed