[nem-en] default parameter value

[Ivan A Eryshov]

Yeah, it works now. But, very strange of seeing here the
DefaultValueAttribute. It was designed to provide default values for
properties, but not parameters.

> -----Original Message-----
> From: devel-en-bounces at nemerle.org [mailto:devel-en-bounces at nemerle.org]
> On Behalf Of Kamil Skalski
> Sent: Sunday, March 11, 2007 1:36 AM
> To: devel-en at nemerle.org
> Subject: Re: [nem-en] default parameter value
> 
> Hm... wait a moment - I can see following code in parser:
> 
>           mods.custom_attrs = <[
> System.ComponentModel.DefaultValueAttribute ($e)
>                               ]> :: mods.custom_attrs;
> 
> So maybe come back to the original question and try
> System.ComponentModel.DefaultValueAttribute attribute... :)
> 
> And here I can see there is a collision of having ..$attrs   and   =
> $default at the same time.
> 
> 2007/3/10, Ivan A Eryshov <ivan.eryshov at gmail.com>:
> > How should I define a parameter with a default value from macro? Such
> code
> > not compiles:
> > <nemerle>
> >   <[ parameter:
> >     ..$attrs $(n : name) : $(mem.GetMemType() : typed) = $default
> >   ]>
> > </nemerle>
> >
> > > -----Original Message-----
> > > From: devel-en-bounces at nemerle.org [mailto:devel-en-
> bounces at nemerle.org]
> > > On Behalf Of Kamil Skalski
> > > Sent: Saturday, March 10, 2007 8:37 PM
> > > To: devel-en at nemerle.org
> > > Subject: Re: [nem-en] default parameter value
> > >
> > > Such attributes are interpreted only when loading external libraries.
> > > For compile-time code compiler uses its own information basing on
> > > presence of
> > >
> > > foo (x = bar) { }
> > >
> > > construct
> > >
> > > 2007/3/10, Ivan A Eryshov <ivan.eryshov at gmail.com>:
> > > >
> > > >
> > > >
> > > >
> > > > Why this code not compiles?
> > > >
> > > > <nemerle>
> > > >
> > > > module A
> > > >
> > > > {
> > > >
> > > >   Test([Optional, DefaultParameterValue(10)] p : int) : void
> > > >
> > > >   {
> > > >
> > > >     System.Console.WriteLine(p);
> > > >
> > > >   }
> > > >
> > > >   Main () : void
> > > >
> > > >   {
> > > >
> > > >     Test(); // wrong number of parameters in call, needed 1, got 0
> > > >
> > > >   }
> > > >
> > > > }
> > > >
> > > > </nemerle>
> > > >
> > > >
> > > > _______________________________________________
> > > > https://nemerle.org/mailman/listinfo/devel-en
> > > >
> > > >
> > >
> > >
> > > --
> > > Kamil Skalski
> > > http://nazgul.omega.pl
> > >
> > > _______________________________________________
> > > https://nemerle.org/mailman/listinfo/devel-en
> >
> >
> > _______________________________________________
> > https://nemerle.org/mailman/listinfo/devel-en
> >
> 
> 
> --
> Kamil Skalski
> http://nazgul.omega.pl
> 
> _______________________________________________
> https://nemerle.org/mailman/listinfo/devel-en