Re: [boost] user defined facets in date_time library

From: Jeff Garland (jeff_at_[hidden])
Date: 2004-08-30 11:56:32

On Mon, 30 Aug 2004 13:25:51 +0200, Markus Schöpflin wrote
> While trying to make date_time tests compilable on tru64cxx65, I 
> have come accross an issue with user defined facets (namely 
> date_names_put and all_date_names_put) that leaves me scratching my head.
> 
> Is a user defined facet required to be default constructible? 

No, in fact I don't think any of the examples are default constructable.

> Or does it need a constructor of the form "foo(size_t refs = 0) : 
> locale::facet(refs) {}"?

There should be no requirements ont the constructor.  date_names_put is the
base interface while all_date_names_put is an implementation that allows the
passing of a bunch of char arrays to get the desired date output.

> [lib.facets.examples] doesn't say so but most examples I could find 
> either have a default constructor or a constructor taking a 
> reference count.

I'm not sure where you are seeing these examples, but if you looking in
libs/date_time/test/gregroian/testfacet.cpp I don't think you will find any
default constructors.

Maybe you can send me some of the errors you are getting -- onlist or off --
your choice?

Jeff