Re: [tcltk-perl] changes to Tcl and Tcl::Tk

[Jeff H. <je...@Ac...>]

Gisle Aas wrote:
> "Jeff Hobbs" <je...@Ac...> writes:
>>Seeing how small need_tk has become, I think it might be better
>>to move this to the Tcl module as Tcl::pkg_require, and
>>possibly take the optional args that Tcl's package require
>>command allows (version and 'exact' boolean).
> 
> Why this wrapper at all?  Why not call out to Tcl each time?
> 
> I guess I'm asking "What would be the difference between these?".
>    
>    $tcl->call("package", "require", $pkg);
>    $tcl->pkg_require($pkg);

No difference actually .... need_tk was always there, and used to
handle some special cases.  You would say need_tk("Tree") and it
would do the right thing.  However, that all seems mostly
irrelevant given the current structure, which is relatively
transparent as well as modular.  Mostly it becomes less relevant
now that icall doesn't intentionally bypass Tcl's unknown
(AUTOLOAD) mechanism, which meant special handling for the
"require" of many widgets.

The one thing it does is make sure you only do the package require
call once, which of course Tcl handles as well, so you are just
shaving off a bit of time there (on some widgets, that call is made
each time you instantiate a widget, on others, just once for the
first instantiation).

Jeff