Hi Chris !

and thanks for your answer but my understanding was that if I do pass a NULL to the c# function, then it should use default ?
So you're saying that as null is valid for the string argument, it does not take the default value right ?

I learned something then thanks

Hi and a very happy new year to everyone !

I stumble upon a strange behaviour when calling c# functions from a x# project:

I have a c# function having an optional string parameter with a default value:

public static void DefaultParameterTest(string defautvalue = "default")
{
Console.WriteLine ...

Basile,
If the class is a DbServer subclass then it has to be:

PUBLIC METHOD SetFilter( cFiltre ) AS USUAL

Robert


I tried that but then it's complaining about not having a type :

Severity Code Description Project File Line Suppression State
Error XS1031 Type expected Locasyst.WebServices ...

Hi,

I'm trying to target Vo as dialect, code is Vulcan.net for now
But I have two last errors I can't figure out :
Error XS9041 Override of virtual method 'SetFilter' in child class has STRICT calling convention but overridden method in parent class is CLIPPER. Locasyst.WebServices.Lib.XSharp ...

Hi Basile,

I was not aware of that, thanks! So the (roslyn) compiler can be setup so that it does not even allow assigning null to "regular" reference types! But when I try this in X#

LOCAL c AS STRING?
c := NULL

the compiler reports "warning XS8632: The annotation for nullable reference ...

Thank you Robert.

The aps.net project id indeed c#.

Does that means I would need to have my XSharp library as a Core dialect project in order to be able to use optional parameters ?

well, I don't think I can convert the Xsharp lib to Core dialect so I'll just create overloads.

But now I ...

@Chris,

yes indeed, I was trying nullable before (like the other following parmeters)
And also no, I'm writing a lot of more modern c# and there is a difference between string and string? (starting c#8) that can come handy, when specifying APIs for example

https://learn.microsoft.com/en-us/answers ...

Thank you Robert.

The aps.net project id indeed c#.

Does that means I would need to have my XSharp library as a Core dialect project in order to be able to use optional parameters ?

Hi,

I'm trying to understand when the compiler is complaining about a decalred optional parameter.
I have my function in a Xsharp project :

METHOD LocCreation( cCodeClient AS STRING, cMotDePasse AS STRING, aArticleLoc AS List<ArticleLoc>, dtDebutLoc AS DATETIME, dtFinLoc AS DATETIME, dtDepart AS ...

awesome !

do you know since which version of VS2022 ?
I just reinstalled my machine so got the latest one (17.11.4)

that reminds me I need to register for the summit !

regards.