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From: Marco Molteni <mm470047@silab.dsi.unimi.it>
Message-Id: <199710090811.KAA05104@tac.silab.dsi.unimi.it>
Subject: adding C code to tcl and perl
To: questions@freebsd.org
Date: Thu, 09 Oct 1997 10:11:42 METDST
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Hi all,

Yes, I know this isn't FreeBSD specific. But, you know, when one
is so used to the high quality replies from this list... ;-)

First, some background informations. I'm doing a program as a
term exam for the University. It should be a smarter bookmarks
manager than the standard one that comes with web browsers
like Netscape. Please note that the term "smarter" comes from
the project description, not from my idea of it ;-)
(Also, I'm planning to release a beta version, just to know how
bad it is. I'll post an announce about it asap).

It is my first Unix GUI programming experience, so I started 
having a look at some graphical toolkits. I excluded the raw Xlib
and the commercial Motif. I found a very nice toolkit, Qt from
Troll tech (www.troll.no). Now I'm evaluating Qt vs tcl/tk.

Tk really impressed me. Easy and, IMHO, with a language (tcl) really
clean and elegant, compared to perl, which seems to me cryptic
and messy (please, no religion flames).

And now to the subject: adding C code to tcl and perl.
Please note that I'm new to tcl (I read Ousterhout's book, and fiddled
with tcl/tk a little) and I just started reading the Camel
book about perl.

Now correct me if I'm wrong. I'm really disappointed to see that
the only way to add new commands to tcl is compiling and linking
a new tclsh or a new wish, while, if I use perl, I can simply add
a require or use instruction (or similar) in the script from wich
I want to use a C package (I know that obviously the package
or library or how you call it must be linked with the perl library).

Is it true, or I'm missing something and there's an esier way
to add new commands to tcl? (eg, low-level capabilities that *must*
be implemented in C, and not in tcl)

Thanks

Marco Molteni