A template for method forwarding?

Christopher Wright dhasenan at gmail.com
Fri Dec 12 16:27:42 PST 2008

Bill Baxter wrote:
> On Sat, Dec 13, 2008 at 6:13 AM, Bill Baxter <wbaxter at gmail.com> wrote:
>> Cool.  I don't see anything D2 specific there, so I think it should
>> work in D1 ok.
>> std.traits.ParameterTypeTuple and std.traits.ReturnType both exist in
>> D1, if that's what you were worried about.
>> I think there may be a problem with 0-arg functions in the code?
>> You handle the void return type (which I'm not sure is necessary
>> actually -- I think D lets you say "return foo()" for a void function
>> specifically to handle this kind of template situation), but I think
>> maybe you don't handle a void argument?    I'm getting an error with
>> that for some reason... will dig more.
> Actually I think it's not zero-arg functions.
> The problem is that one of my arguments is a templated type.
> The .stringof says the parameter type is TheTemplate, when the
> argument type is really TheTemplate!(T).   So when your code tries to
> generate the function it tries to make it    void
> aFunction(TheTemplate x) { ... }, which obviously ain't gonna fly.
> So looks like bad stringof is the culprit, once again.
> --bb

This case is a known bug and has a patch.

Really, stringof should give a fully qualified name, and any template 
parameters should use fully qualified names. The existing patch doesn't 
do that, but it's a minor improvement.

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