Great, thanks for the detailed response. I have read the docs several times,
but each time it becomes a little less clear...
I like the extra braces because they look pretty in syntax-highlighting
editors. I am always using strict. Not sure what the second call was or what
looked weird about it, but it works.
By fully qualified I meant writing Net::SMTP::method() (which I generally do
to make it easier to read (for me at least), copy and paste code), as opposed
to just method().
As far as the compiler warnings, if I have module a which uses b and module b
that uses a and I perl -c one of the modules I get warnings about variable
redefinition.
Thanks again,
-John
On Thu, 1 Jul 2004 09:42:59 -0600, Wiggins d Anconia wrote
> > I have read the docs but I'm still not quite clear on the difference
> between
> > use and require and if either is even needed.
> >
>
> The two key differences are that 'use' happens at compile time,
> rather than runtime, and that 'use' automatically calls the
> 'import' function of the module just loaded, if it exists. More
> often than not you can do 'use' instead of 'require', but realize
> that I meant that as a generalization and as a generalization it is
> inherently flawed. If you choose to use a require, please check out,
>
> perldoc -f eval
>
> I am assuming the docs you mentioned having read were,
>
> perldoc -f use
> perldoc -f require
>
> If not you should have a read through them.
>
> > I just moved some code from one module to another. The orignal module
> has use
> > Net::SMTP in it, but the module I moved the code to does not (it does
> use the
> > first module though). I forgot to put the use line in the second
> module, but
> > the code still works (I fully qualify it like my ${smtp} = new Net::SMTP(
> > ${params{'server'}} );.
>
> The extra sets of braces are not needed in the above, aka ${smtp}
> can be written $smtp. Are you using 'use strict'?? That second call
> is very weird...
>
> Does that mean I don't need the use statements
> > anywhere if I fully qualify? or does it work only because the second
> module
> > uses the first module that uses Net::SMTP?
> >
>
> It works because the second module is loading Net::SMTP. You aren't
> actually fully qualifying anything that I see, aka fully qualified
> would be,
>
> $::variable = $Net::SMTP::<variable>
>
> Or some such.
>
> > I would like to avoid use statements if possible since they can result in
> > compiler warnings about circular references and it seems to parse the
> library
> > even when it doesn't need to, which seems like a performance concern.
> >
> > Any light anyone could shed on all this would be greatly appreciated.
> >
> >
>
> Show us some code, you shouldn't be getting circular references from
> a simple 'use' statement loading a library. And the library should only
> be loaded once no matter how many times you 'use' it.
>
> I smell something fishy....
>
> http://danconia.org
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
