Re: GTK signals question.

[Chris Moller <moller mollerware com>]

On 03/05/14 13:52, Chris Angelico wrote:
> On Thu, Mar 6, 2014 at 5:43 AM, Chris Moller <moller mollerware com> wrote:
> > gcc supports nested functions as an extension to standard C.  I tend to use
> > them a lot because they operate within the stack frame of the enclosing
> > function, thereby minimising the amount of information you have to pass.
> > This is especially valuable in GTK callbacks where you can only pass one
> > pointer/int.
> That's a nice idea as long as you don't let the calling function
> return. As far as I know, gcc nested functions don't in any way "hold
> onto" the outer state, so there'll be a pile of segfaults waiting for
> you if the outer function has returned - like returning a pointer to
> an automatic variable.

I'm exploring a bit the circumstances when to, or not to, use nested 
fcns.  What it's beginning to look like is that they'll work fine in 
top-level fcns, and, apparently, GTK modal dialogues, but everything 
else is open to question.

> Is there a reason you're trying to write high-level code in C?

Habit, mostly.  I've been coding in C since the early 80s and I can do 
it in my sleep.  Python's okay, but I tend to think of it more as a 
scripting language rather than something I want to write a 50k-line 
application in.  (Actually, the app I'm writing now uses Python as it's 
scripting language...)  I'd never heard of Pike but, looking it up, the 
"interpreted" bit makes me wonder about performance.

> Give
> Python or Pike a shot - both have GTK bindings and are way WAY easier
> to write code in. Believe me, I've written plenty of C code (including
> GUI handling), and life is just so much better when memory management
> isn't part of your daily keyboarding regimen.
>
> ChrisA
> PS. Has anyone else noticed that this thread is more than half by
> people named Chris?

Years ago, I worked in a lab where about a third of the people were 
named Ron.  Confusion reigned...

> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
> https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list