[Issue 8968] New: std.traits.ParameterIdentifierTuple is undocumented and doesn't work with ref params

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8968

           Summary: std.traits.ParameterIdentifierTuple is undocumented
                    and doesn't work with ref params
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrej.mitrovich at gmail.com


--- Comment #0 from Andrej Mitrovic <andrej.mitrovich at gmail.com> 2012-11-06 10:18:54 PST ---
import std.traits;

void foo(ref int x) { }

void main()
{
    alias ParameterIdentifierTuple!foo x;
}

D:\DMD\dmd2\windows\bin\..\..\src\phobos\std\traits.d(518): Error: function
literal __lambda16 (ref int x) is not callable using argument types (int)

It tries to use a clever trick by defining an inner lambda with a parameter
list, and then extracts the name from that. But it can't call a lambda with a
ref parameter at compile-time. 

Honestly we should just have a simple __trait that returns the parameter
identifiers, because this is a very hacky workaround that doesn't work in all
cases.

-- 
Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------